V.3600 Modem User’s Guide NO YES TR CS RS TALK/DATA Cd RD TD V.3600 Motorola ISG 20 Cabot Boulevard Mansfield, Massachusetts 02048 USA Part No. T0097, B Model V.
Copyright Copyright 1998 Motorola Inc. Published by Motorola, who reserves the right to make improvements in the products described in this manual as well as to revise this publication at any time and without notice to any person of such revision or change. All rights reserved.
Regulatory Information FCC Requirements This equipment complies with FCC rules Part 68. Located on the equipment is the FCC Registration Number and Ringer Equivalence Number (REN). You must provide this information to the telephone company if requested. The Registration Number and REN is inscribed on the printed circuit board on insert cards, or on a label attached to either the chassis bottom or metal end-plate on standalone or rack models.
Regulatory Information This equipment may not be used on coin service provided by the telephone company. Connection to party lines is subject to state tariffs. An FCC compliant telephone cord and modular plug are provided with this equipment, which is designed to connect to the telephone network or premises wiring using a compatible modular jack that is Part 68 compliant. See installation instructions in Chapter 2, Installation for details.
Regulatory Information Shielded Cables This product has been tested and complies with FCC limits for a Class B computing device. Testing was done with shielded computer cables. Using unshielded cables could cause your system to emit excess radio frequency, increasing the chance of interference. To comply with FCC regulations it is necessary to use shielded computer cables with your installation. FOR OFFICE USE ONLY Model Name: V.
Regulatory Information Special Requirements For Canada Certain requirements exist for data communication products manufactured for use in Canada. Principle among these requirements is the application of the IC label as described below. However, certain data communication products do not require the IC label nor adherence to IC requirements. If this is the case the IC label will not be affixed to the units. Industry Canada (IC) Requirements IC labels are affixed to each unit sold in Canada.
Regulatory Information Caution: Users should not attempt to make installation connections themselves, but should contact the appropriate electric inspection authority or electrician. Ringer Equivalence Number The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface.
Contents Regulatory Information Chapter 1. Introduction Shelf-Mount Units ................................................................................ Features ................................................................................................. Data Mode ....................................................................................... Fax Mode ........................................................................................ Software .............................................
Contents (continued) Chapter 5. AT Commands Command Categories ........................................................................... Operation Modes .................................................................................. Offline Command Mode .................................................................. Online Command Mode .................................................................. Data Mode........................................................................................
Contents (continued) Chapter 5. AT Commands (Continued) Local Character Echo — E ............................................................. Online Character Echo — F ............................................................ Hanging Up — H, H1 ..................................................................... Fast Disconnect — H2, H3 .............................................................. EPROM Check — I .........................................................................
Contents (continued) Chapter 5. AT Commands (Continued) Retaining / Restoring Options — *RO ........................................... Soft Download Password — %P1, $Y ............................................ Remote Configuration .......................................................................... Remote Configuration Security ....................................................... Remote Security Code — %P= .......................................................
Contents (continued) Chapter 8. Security Autocallback Security .......................................................................... Low Security Operation ....................................................................... Operating without Low Security ..................................................... Operating with Low Security .......................................................... Remote Operation ............................................................................
Contents (continued) Chapter 9. Fax Operation Fax Operation ....................................................................................... Modem Initialization ............................................................................ Fax Defaults........................................................................................... Fax Autoanswer ............................................................................... Fax Associated Options ............................................
Contents (continued) Chapter 10. Status Registers (Continued) S15 ................................................................................................... System Tests — S16 ........................................................................ S17 ................................................................................................... Test Timeout — S18 ....................................................................... S19, 20 ...................................................
Contents (continued) Chapter 10. Status Registers (Continued) Callback Delay — S74 .................................................................... Callback Retry — S75 .................................................................... Callback Retry Delay — S76 .......................................................... Lockout Threshold — S77 .............................................................. Autocallback Timer — S78 .............................................................
Contents (continued) Chapter 12. Maintenance General ................................................................................................. Fuse Replacement ................................................................................. Maintenance ......................................................................................... Calling Technical Support .................................................................... 12-1 12-1 12-1 12-2 Appendix A. Specifications Size ...........
Contents (continued) Appendix E. Command Index and Defaults General ................................................................................................. Caller ID Commands ....................................................................... Distinctive Ring Commands ........................................................... Fax Commands ................................................................................ Class 1 Commands Valid in Only Fax Mode ...................................
Chapter 1 Introduction The Motorola V.3600 Series Modem provides synchronous, asynchronous, and fax capabilities for data communications or facsimile links between a local computer and a remote computer, fax, or data terminal equipment (DTE) located anywhere a standard or cellular telephone can reach. Data can be transmitted over standard dial-up lines, private leased telephone lines, or wireless communication. The V.
Introduction Features The V.3600 is a flexible telecommunications tool that offers the following standard features. Data Mode • Full-duplex operation on two-wire public connections or two-wire or four-wire private telephone connections with two-wire public automatic or manual backup • 300, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200, 33600 bps DCE data rates • Compatible with these standards: CCITT V.34 CCITT V.33 CCITT V.32 bis CCITT V.32 CCITT V.
Introduction • Caller ID • Distinctive ring • Multiple levels of security with auto callback and password protection and up to 50 users • Automatic speed matching to originating modem • Remote configuration using command mode or LCD • Built-in standard diagnostics for testing phone line quality and modems at each end • Flash upgrades Fax Mode • • • • Fax speeds to 14.4 kbps HDLC framing to allow T.30 Error Correction Mode Standard Class 1 interface conforms to EIA-578 Group 3 compatibility: CCITT V.
Introduction Description Functional The V.3600 processes serial asynchronous data from a DTE at all standard rates from 300 bps to 230.4 kbps*, and serial synchronous data at rates from 300 to 33.6 kbps. Transmission can be over either dial-up lines or either two- or four-wire leased lines. The maximum line speed is 33.6 kbps. Built-in test features can determine system performance and isolate faults in the data link.
Introduction The V.3600 rear panel has an EIA-232 DTE connector, an 8-pin TELSET/LEASED LINE jack, an 8-pin DIAL jack, the power switch, fuse, and cord (Figure 1-2). TELSET LEASED LINE 1 3/16 AMP S.B. DIAL DTE 0 115 VAC 60 HZ 1/4 AMP Figure 1-2. Rear Panel (115 Vac Model) V.
Introduction RM16M Unit The shelf-mount RM16M unit (Figure 1-3) has edge connectors that insert into the shelf backplane. The shelf backplane performs the same functions as the standalone rear panel. Refer to the “Shelf-Mount RM16M V.3600 Installation” section on page 2-9. V.3600 Figure 1-3. RM16M Version of the V.3600 1-6 V.
Chapter 2 Installation This chapter provides information on mechanical and electrical installation of the modem. Electrical Installation The rear panel (Figure 2-1) includes DTE cable and telephone line connectors. TELSET LEASED LINE DIAL Figure 2-1. Rear Panel Connections (115 Vac Model) AC Power Connection Power is supplied through a 6-foot line cord with a grounded 3-wire plug.
Installation If the modem is equipped for +/- 12/+5 VDC power input, connect the VDC power to the amp connector. A chassis ground connection is also supplied on the terminal block. DTE Connection The DTE connector is a 25-pin D-series type conforming to EIA-232 specifications. You must use a shielded DTE cable to comply with EMC requirements. Pin signals are shown in Figure 2-2 and are described in Table 2-1. 2-2 V.
Installation Figure 2-2. Digital Interface Signals V.
Installation Table 2-1. Pin Signal Descriptions Pin EIA232D CCITT V.24 Signal Description 101 Shield 2 BA 103 Transmit- Serial digital data (to be modulated) ted Data from a data terminal or other digital data source: Synchronous data must be accompanied by the modem transmit clock (pin 15) or by an external data rate clock (pin 24). Data transitions should occur on positive-going clock transitions; asynchronous data does not require a transmit clock.
Installation Table 2-1. Pin Signal Descriptions (Continued) Pin EIA232D 11 -- 15 DB 17 CCITT V.24 Signal Description Signal Quality Indicator This circuit indicates probability of errors in the received data: a positive level indicates poor signal quality while a negative level indicates good signal quality. † 114 Transmit Clock (DCE) A transmit data rate clock output for use by an external data source: Positive clock transitions correspond to data transitions.
Installation Telephone Line Connection The modem operates in these line-related modes: • Dial • Leased Dial Mode: PSTN Connection (DIAL jack) The public switched telephone network (PSTN) is a two-wire dial network. Modems are registered with the Federal Communications Commission (FCC) for direct connection to the PSTN. The label on the chassis bottom gives the FCC registration number and other information required for network operation. 2-6 V.
Installation Direct connection to the PSTN is shown in Figure 2-3. 8-pin Connectors TELSET LEASED LINE DTE Connector Screws DIAL DTE Cable supplied with telephone EIA-232 25-Pin Connector to DTE Shielded DTE Cable RJ11C jack installed by telephone company Use 8-pin Modular (at modem end) to 6-pin Modular (at RJ11 wall jack end) connector. Notes: 1.
Installation The telephone company will install the leased line and wall jack at your site. The line connects to the modem at the 8-position TELSET/ LEASED LINE jack. Figure 2-4 shows a typical modem hookup for operation over private leased lines with dial backup.
Installation Shelf-Mount RM16M V.3600 Installation Go to Appendix C, Hardware Options to check the board options before installation. Shelf-mount RM16M V.3600s should be installed or replaced by personnel familiar with shelf-mount installation. The unit has an edge connector that inserts into a receptacle located on the backplane and power bus. Note Figure 2-5 represents a typical dialup connection using one of the most common rack shelves. Connect cables as appropriate for any compatible RM16M shelf.
Chapter 3 Getting Started Option Selection There are six ways to change or select options: • LCD - Using the front panel LCD and pushbuttons is simple, straightforward, and requires the least amount of technical background. Chapter 4 explains LCD operation. • AT Commands - The AT command set can be used to select modem options. Chapter 5 describes AT commands.
Getting Started Placing a Call There are three methods for placing a call: Dialing with a Standard Telephone 1) Lift the telephone receiver. Wait for the dial tone. 2) Dial the number of the remote site. 3) When the answer back tone is heard, immediately press the TALK/DATA button and hang up the telephone. The modems go through a connection sequence and establish a data link. If a data link is not established, return to Step 1. 4) After the link is established, hang up the telephone.
Getting Started Answering a Call There are three ways to answer a call: Autoanswering Normally the modem is configured to autoanswer on the first ring. If a telephone is plugged into the TELSET/LEASED LINE jack, it will also ring. Answering Manually When detecting a ring, the modem LCD displays ringing status. Press TALK/DATA to answer the call and place the modem in the data mode. Answering from Terminal with AT Command Set The modem displays the ring response. To answer a call, type ATA.
Getting Started Reasons for Call Termination The conditions described in Table 3-1 cause call termination. Table 3-1. Reasons for Call Termination Description Condition Abort Disconnect (No answer, busy signal, no modem, etc.) Default 30 sec; select 1 to 255 sec (S-register 7). ATH Disconnect command. Loss of Carrier Disconnect Select 100 ms to 25.5 sec (S-register 10). Receive Long Space Disconnect Disabled or select 2 sec. DTR Disconnect Disabled or select 10 ms to 2.55 sec (S-register 25).
Getting Started Table 3-1. Reasons for Call Termination (Continued) Description Condition Signal Quality Leased line operation with dial backup enabled; extended loss of carrier or 4 unsuccessful retrains in 3 minutes causes dial backup. Test Mode entered Certain test modes require call termination. Modem power is turned off. V.
Chapter 4 Front Panel Operation The liquid-crystal display (LCD) front panel provides easy real-time access to modem configuration and status. You can use the LCD at any time to modify modem options or to get information about modem operation and status. All of the major modem options can be controlled through the LCD interface without an external terminal or phone line connection. Operation of the LCD can be secured using a password protection feature.
Front Panel Operation LCD Menus The V.3600 has seven main LCD menus that support modem operations. Table 4-1 lists them, in the following sequence: • • • • • • • MODEM STATUS DIAL STORED NUMBER DISPLAY STATUS SELECT TEST MODIFY CONFIGURATION CHANGE PHONE NUMBERS FRONT PANEL FEATURES LCD Menu Operation The LCD menu is shown in Table 4-1, as follows: • The first column lists the seven main menu categories. • The second column is the submenus, listing functions for each category in the main menu.
Front Panel Operation Table 4-1. LCD Menu Option Selection SReg Main Menu LCD Messages 1 V.34 33600 IDLE (Press NO to advance S91 Shows the current modulation, bit to MAIN 2) S67 rate, and modem status. MODEMSTATUS Main Menu Submenu Submenu Item Item Option AT Com.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu Submenu (Online test 4, SELECT continued) TEST? c (continued) o n t. 5 MODIFY CONFIGURATION? CHANGE MODEM OPTIONS? Item Submenu Item Option AT Com. SReg REMOTE INITIATE, DIGITAL LOOP † EXIT &T6 S16 INITIATE, REMOTE DIGI TAL LOOP WITH EXIT TP † &T7 S16 TEST PATTERN† INITIATE, EXIT %T --- 2 WIRE/ 4 WIRE &L1, &L S27 AUTOMODE V.21 BELL 103 B212A V.22 bis V.27 ter * V.29 * V.33 * V.32bis V.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. MODIFY CONFIGURATION? (continued) Submenu CHANGE MODEM OPTIONS? (continued) Submenu Item Item Option AT Com. SReg CHANGE MIN DCE RATE? 33600 31200 28800 26400 24000 21600 19200 16800 600 14400 12000 7200 9600 9600U ** 4800 2400 1200 300 DTE SPEED %L18 %L17 %L16 %L15 %L14 %L13 %L12 %L11 %L10 %L9 %L8 %L7 %L6 %L5 %L4 %L3 %L2 %L1 %L S69 LOW BER CHANGE V.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. MODIFY CONFIGURATION? (continued) Submenu CHANGE MODEM OPTIONS? (continued) CHANGE PROTOCOL OPTIONS? Item Submenu Item Option AT Com.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. MODIFY CONFIGURATION? (continued) Item Option AT Com.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. Submenu Item Submenu Item Option AT Com. SReg ASYNC DTR, MANUAL, V.25 BISYNC, V.25 SDLC V.25 bis ASYNC &M1, &M2 &M3 &M4 S27 S30 ENABLE DISABLE *NT1 *NT S29 ASCII, CHARACTER TYPE (V.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. Submenu Submenu Item CHANGE DTE RTS/CTS DELAY MODIFY CONFIGU- OPTIONS? (continued) RATION? DTE COM(continued) MANDED FALLBACK CHANGE TEST OPTIONS? CHANGE DIAL OPTIONS? Item Option AT Com.
Front Panel Operation Table 4-1. LCD Menu Option Selection (Continued) Main Menu 5 c o n t. MODIFY CONFIGURATION? (continued) Submenu Item Option AT Com.
Front Panel Operation Front Panel Security The Front Panel Security feature provides password protection for front panel menu access. The modem is shipped from the factory with this feature disabled. The Front Panel Security password is a 4-digit string that can be set to any combination of digits from “0000” to “9999”. Selecting a password of “0000” disables Front Panel Security; any other password enables it. IMPORTANT: Without your password, you cannot access front panel configuration.
Chapter 5 AT Commands This chapter describes commands used to select options and operate the modem. Some options depend on, or are restricted by, the mode of operation. Appendix E provides a quick reference list.
AT Commands Offline Command Mode In offline command mode (generally referred to as command mode), the modem communicates with the computer or terminal. Commands can be entered separately or in strings. There is no data communication link established in this mode. Online Command Mode This mode is entered from the data mode after the escape command has been entered. The escape command is performed by entering the escape character (+ is the default) three times.
AT Commands Creating a Command Statement — AT To create a command statement use the following steps: 1) Type AT. This is the Attention Code telling the unit a command statement follows. 2) Type the command. 3) Press the Enter key to send the command statement to the modem. An example of a command statement using the dial command (D) follows. ATD554-1212 This statement can be read as “Attention: Dial 554-1212.
AT Commands Monitor Display As commands are typed they appear on the monitor so the operator can verify the input. This is called local character echo. The echo may be turned on or off using AT commands. Refer to the “Local Character Echo — E” section on page 5-22 for details. Command Statement Buffer The modem temporarily stores up to 80 characters in the command buffer. If this limit is exceeded, the modem does not accept the command and sends an ERROR message.
AT Commands Numbered Commands Commands that start with the same letter are distinguished by a number following the letter. For example, the M0 command selects speaker always off, M1 speaker on until carrier detected, and M2 selects speaker always on. Note The zero (0) may be omitted; the commands M and M0 are identical. This manual uses the nonzero form. The modem treats both the same, but zeros count against the buffer total. Group Commands A group of commands can be typed in a single command statement.
AT Commands Digit / Word Selection — V The V command tells the modem which type of response message to show on the monitor. Some software requires digit response messages but words are easier to remember. Command Operation V Enables digit response messages V1 Enables word response messages Response Displays — Q The Q command enables or disables response messages. The modem still responds to commands when the response display is inhibited.
AT Commands Call Progress / Connect Speed Messages X The X command selects response code/message displays and dialing options such as call progress monitoring, busy signal or dial tone detection and blind dialing.
AT Commands The X3 command followed by a dial command makes the modem go off hook, wait the amount of time set in register S6 and dial the number. If a busy signal is detected, the modem sends a BUSY message and hangs up. If the call is completed, the appropriate CONNECT message similar to X1 is displayed. The modem does not detect a no dial tone situation. The X4 command followed by a dial command makes the modem go off hook and wait for a dial tone before dialing.
AT Commands Response Number Codes / Messages Response number codes, messages, and their meanings are as follows. The connect rates are serial port rates (DTE), not DCE rates.
AT Commands Code Message Meaning DTE rate 31200 bps DTE rate 32000 bps DTE rate 33600 bps DTE rate 38400 bps DTE rate 57600 bps DTE rate 115200 bps DTE rate 230400 bps V.42 bis 300 bps connection V.42 bis 600 bps connection V.42 bis 1200 bps connection V.42 bis 2400 bps connection V.42 bis 4800 bps connection V.42 bis 7200 bps connection V.42 bis 9600 bps connection V.
AT Commands Code Message Meaning V.42 bis 32000 bps connection 54 CONNECT 32000/ V42bis 55 CONNECT 33600/ V42bis V.42 bis 33600 bps connection 56 CONNECT 38400/ V42bis V.42 bis 38400 bps connection 57 CONNECT 57600/ V42bis V.42 bis 57600 bps connection 58 CONNECT 115200/ V42bis V.42 bis 115200 bps connection 59 CONNECT 230400/ V42bis V.42 bis 230400 bps connection 60 CONNECT 300/V42 V.42 300 bps connection 61 CONNECT 600/V42 V.42 600 bps connection 62 CONNECT 1200/V42 V.
AT Commands Code Message Meaning V.42 115200 bps connection V.
AT Commands Code Message Meaning 110 CONNECT 9600/MNP MNP 9600 bps connection 111 CONNECT 12000/MNP MNP 12000 bps connection 112 CONNECT 14400/MNP MNP 14400 bps connection 113 CONNECT 16800/MNP MNP 16800 bps connection 114 CONNECT 19200/MNP MNP 19200 bps connection 115 CONNECT 21600/MNP MNP 21600 bps connection 116 CONNECT 24000/MNP MNP 24000 bps connection 117 CONNECT 26400/MNP MNP 26400 bps connection 118 CONNECT 28800/MNP MNP 28800 bps connection 119 CONNECT 31200/MNP MNP 31200 bps connection 120 CONNE
AT Commands Use spaces, hyphens, parentheses, or other punctuation, except dial modifiers, to make the command line easier to read and enter. For example, these are all treated the same: AT D 1-800-555-1212 AT D 1 (800) 555-1212 ATD18005551212 The dial modifiers are as follows.
AT Commands Wait for Second Dial Tone — W To wait for second dial tone insert a W in the dialing sequence. AT D 9 W 323-8000 Instead of using a comma pause for an outside line, wait up to 30 seconds (time specified by S7) for a second dial tone. Hook Flash — ! To flash the switchboard, insert an exclamation mark in the dialing sequence. AT D T 9W 323-8000 ,!, #7 377 This inserts a 0.5 second on hook condition, usually for transferring a call or similar use.
AT Commands Wait for 5 Seconds of Silence — @ To wait for 5 seconds of silence (no answer back tone) after accessing an electronic service, use the @ command in the dialing sequence. AT D 399-4700 @ 2251 ; In this example the modem dials the number and, after the connection, waits for 5 consecutive seconds of silence. The modem then sends service code 2251 and returns to command mode for further input.
AT Commands Switching from Voice to Data After dialing, place the modems at both ends in data mode by pressing the TALK/DATA button. The *DA1 command can also be used to change from talk mode to data mode. Answering A Call There are three ways to answer a call for a data connection: • Manually • AT Command • Autoanswer Manual Answer When the phone rings, answer by pressing the TALK/DATA button. AT Command Answer — A The modem can be made to answer a call by entering ATA when the phone rings.
AT Commands Note The communications software package may need reconfiguring to look for the “Caller Number:” message prefix so that it knows when to look for a phone number. Command *ID *ID1 Operation Disable Caller ID Enable Caller ID When Caller ID is enabled, one of the messages in Table 5-2 appears on the computer screen after the first RING message: Table 5-2. Caller ID Messages The modem sends this message...
AT Commands Command *DR=0 *DR=1 Operation Disable Distinctive Ring Enable Distinctive Ring When distinctive ring is enabled, one of the messages in Table 5-3 appears on the DTE instead of the regular RING message: Table 5-3. Distinctive Ring Messages The modem sends this message... RING A RING B RING C If the Ring Was a: Single ring (1 ring burst) Double ring (2 ring bursts) Triple ring (3 ring bursts) Terminal Interface Commands The EIA-232 interface connects the modem and DTE.
AT Commands Note For simulated switched carrier operation &C3 must be selected on both modems. Not available in the B103 and V.21 modulation modes. Data Set Ready — &S These commands control the DSR signal generated by the modem to indicate that the modem is ready for operation. DSR must be on for some terminals and devices to communicate with the modem.
AT Commands Serial Port Ring Indicator (Pin 22) — \R The \R commands determine how the ring indicate signal operates on pin 22 of the EIA-232 DTE connector.
AT Commands DTE Controlled Fallback Rate (Pin 23) — *FB Pin 23 of the EIA-232 DTE connector provides signal input to the modem for DTE fallback. If the modem is not using DTE fallback, set this option to ignore pin 23. To cause the modem to act on high/low levels of pin 23, enable this option. Negative level forces a higher rate for primary data rate; positive forces a lower rate providing a fallback rate.
AT Commands If the screen shows no characters, enter the E1 command to turn modem echo on or enable local echo on the terminal. Command E E1 Operation Echo off Echo on Online Character Echo — F In some lower speed modems the F command determines if characters are echoed to the DTE from the modem when online. This function is generally controlled by the communications software. The modem does not support online character echo. Hanging Up — H, H1 To end a call, enter the H command.
AT Commands EPROM Check — I PC software packages may issue the I command to verify the modem will support all commands needed by the software package. The modem returns ASCII characters representing the model and revision level. To request the checksum to be calculated on the EPROM, enter the I1 command. The modem returns four ASCII characters representing the cyclic redundancy check (CRC) in hexadecimal form. Enter the I3 command to request the product version.
AT Commands Return Online — O Use the O command when you are operating in the online command mode and need to return to data mode. It returns the modem to the same mode (originate or answer) that it was in before escaping to the (online) command mode. Enter the O1 command to cause a retrain to occur before going back to data mode. Long Space Disconnect — Y One method of disconnecting two modems is called long space disconnect.
AT Commands Use register S30 to select NRZ/NRZI for data format if using SDLC. Comman d &M &M1 &M2 &M3 &M4 &M5 &M6 &M7 &M8 &M9 &M10 &M11 Operation Async data/dialer mode (V.25 bis disabled) Sync data mode / async dialer Sync data mode / DTR dials if active Sync data mode / manual dial Sync data mode (ASCII) with V.25 bis BISYNC dialer Sync data mode (NRZ) with V.25 bis SDLC dialer Sync data mode with V.25 bis async dialer Async data mode with V.25 bis async dialer Sync data mode (EBCDIC) with V.
AT Commands Synchronous Transmit Clock Source — &X The &X commands select internal, external, or receive clock as the transmit clock source. Command &X &X1 &X2 Operation Internal clock External clock Receive clock V.34 Rate Selection Thresholds — *TH The *TH commands sets the V.34 rate selection thresholds. The V.34 modulation dynamically selects the optimum bit rate to run, based on line quality. Command *TH *TH1 *TH2 Operation Low V.34 threshold (10- 6 BER) Medium V.34 threshold (10- 4 BER) High V.
AT Commands Command Operation *MM5 V.22 bis *MM6 V.27 bis 4-wire leased only *MM7 Reserved *MM8 V.29 4-wire leased only *MM9 Reserved *MM10 V.33 4-wire leased only *MM11 V.32 bis *MM12 V.34 Maximum DCE Speed — %B The %B commands set the originating DCE speed to follow the DTE speed. When originating a call the two modems will not connect at a speed faster than the lower DCE speed setting of the two modems.
AT Commands Command %B16 %B17 %B18 Operation (Continued) 28800 bps 31200 bps 33600 bps *Valid for V.32 bis modulation only Note Use the %B command after the *MM command when specific modulations are required. Minimum DCE Speed — %L If the modem connects at a rate lower than the minimum DCE speed, it disconnects the link automatically.
AT Commands Auto Retrain — %E This option allows the modem to automatically retrain in response to poor received signal quality without reconnecting. The modem always responds to a retrain request from the remote modem. Command %E %E1 Operation Disable auto retrain Enable auto retrain Automatic Rate Adaption — %R Automatic rate adaption (ARA) allows the modem to automatically decrease the DCE rate when the allowable bit error rate is exceeded.
AT Commands Command %R %R1 %R2 %R3 Operation Disable automatic rate adaption Enable automatic rate adaption using low BER: 1 in 105 Enable automatic rate adaption using medium BER: 1 in 104 Enable automatic rate adaption using high BER: 1 in 103 Manual Rate Adaption — *RR The *RR command forces the modem to re-adapt the DCE rate of the remote modem.
AT Commands Online Quick Reference — $H The $H command displays an AT command set quick reference. The Enter key terminates the page displays and any other key scrolls through the pages. Command $H $H= Operation Displays online quick reference Search online quick reference for string. Product Serial Number — $V The $V command displays the product serial number. Talk / Data — *DA The *DA commands select talk or data mode.
AT Commands Disable AT Command Set — *NT The *NT command disables the AT command set. The *NT1 command allows the user at a remote modem to enable AT command operation of another modem via remote configuration.
AT Commands Note The V.3229, V.3227, V.3225, and V.3257 modems use V.33 as the modulation type. The V.3600 must be set up to V.33 to connect to these modems. 2-Wire Operation In 2-wire operation, the modem is a full-duplex modem able to operate over 2-wire leased or PSTN lines. 2-Wire Leased Line Operation The 2-wire leased line is connected to the TELSET/LEASED LINE jack; the DIAL jack connects to a 2-wire dial-up line for dial backup.
AT Commands Dial Backup Dial backup allows the modem to switch to a dial backup mode if the data connection on the leased line is unacceptable for communications. This can be accomplished in two ways: • Automatic - backup due to extended loss of carrier or 4 unsuccessful retrains in 3 minutes • Manual - user determined using front panel controls or AT commands In leased line operation, if both units have autodial backup enabled, one must be configured for forced answer.
AT Commands Dial / Leased Line — &L &L selects line operation as required: Command &L &L1 &L2 Operation Dial (switched) Leased (private) 2-wire Leased (private) 4-wire Dial Backup *DB Command *DB *DB1 Operation Manual dial backup operation Automatic dial backup operation Return to Leased Line from Dial Backup — *LB During dial backup operation, *LB makes the modem return to leased line operation. During leased line operation with forced answer enabled, *LB makes the modem wait for a dial backup call.
AT Commands Configuration Commands These commands recall various profiles for insertion into the active profile, store the active profile and telephone numbers in nonvolatile memory, and designate the powerup profile. Remote configuration is discussed on page 5-41. Configuration Profiles Modem operations are controlled by option settings selected from factory defaults stored in ROM, active settings stored in RAM, and custom settings stored in nonvolatile memory.
AT Commands Storing a Configuration — &W The &W commands store the current configuration options in one of two nonvolatile memory locations (Figure 5-1). The stored configurations are retained in memory even when power is off, or until &W is issued with a new configuration. Command &W &W1 Operation Store options to user option set 1 Store options to user option set 2 Figure 5-1.
AT Commands Load Factory Options — &Fn The &Fn command loads one of the existing configuration sets, providing a complete configuration for a compatible system/network environment. Refer to the Appendix H for a complete list of the options in each set. Command Operation &F, &F1 Load factory option set 1 (async dial-up with V.42 bis) &F2 Load factory option set 2 (async dial-up without V.42 bis) &F3 Load factory option set 3 (sync dial-up without V.
AT Commands View Configuration Profiles/Received Signal Options &V This command lets the user view the current configuration profile in the form of S-register values. &V1 displays the received signal options. Command &V &V1 &V2 Operation Displays configuration profiles Displays received signal options Displays active profile Storing a Telephone Command Line — &Zx=n, *CNx,n, *ND Nine stored phone number locations of up to 31 characters each are available in nonvolatile memory.
AT Commands Retaining / Restoring Options — *RO This option is used when the modem is shared by two or more DTEs. When options are retained, the current configuration is not altered at disconnect. With options restored, the modem returns to the previously stored configuration on disconnect.
AT Commands Note Remote configuration is supported at all rates except 300 bps. Remote Configuration Security The correct security code must be received by the remote modem before remote configuration can be established. Once established, the local DTE becomes a virtual terminal and can serve both local and remote modems. After starting remote configuration, the local DTE serves the remote modem. To return DTE service to the local modem while in remote configuration, issue the +++ escape sequence.
AT Commands Command %P= %P? %P=D %P=(blank) Operation Sets security code to a value 0 to 99999999 entered after the equal sign Requests local security code to be displayed Access for remote configuration is not possible when security code is disabled Clears security code The %P=D command disables remote configuration. To enable remote configuration, insert another security code. IMPORTANT: Do not forget your remote security code. Keep your code in a safe place.
AT Commands Remote Configuration DTE Speed — *RB This option forces DTE speed to a particular setting, if desired.
AT Commands Remote Configuration Saving or Discarding Options — *RQ This option allows the opportunity to discard an undesirable option. Command *RQ *RQ1 Operation Save remote configuration option selection and exit Discard remote configuration option selection and exit V.
Chapter 6 Protocols CCITT V.42 bis Error Control Protocol V.42 bis is an industry standard for error control adopted by the Consultative Committee for International Telephone and Telegraph (CCITT). The CCITT V.42 bis protocol incorporates two error control algorithms, LAPM and MNP. LAPM is a CCITT Link Access Protocol family member related to LAPB and LAPD, currently in use in other communications applications.
Protocols Auto-Reliable Mode In auto-reliable mode the modem negotiates to the highest protocol (LAPM or MNP) common to both modems. However, if a reliable connection cannot be established, auto-reliable allows the protocol to fallback to normal mode. Constant Speed Interface The modem serial port adapts to the data rate of the DTE and does not change speed if the DCE-to-DCE data link connects at another speed. Therefore, the DTE-to-DCE interface speed is constant.
Protocols Direct Mode The DTE speed and DCE speed are forced to be the same. No error control or buffering. Note In direct mode, with the DCE link established at a rate other than the original DTE speed, the modem issues the connect message for the new DTE speed at the original rate. All subsequent data will be sent to the DTE at the new DCE speed.
Protocols Table 6-1.
Protocols If the modem is in direct mode (\J1) and a DCE link is established at a speed other than that of the original DTE autobaud speed, the modem will issue the CONNECT message for the new DTE speed at the original rate. All subsequent data will be sent to the DTE at the new DCE speed. Command Operation \J Disable slaved DTE/DCE (constant speed DTE on) \J1 Enable slaved DTE/DCE (constant speed DTE off) \J2 Enable 230.4 kbps as DTE speed \J3 Disable 230.4 kbps as DTE speed Note The 230.
Protocols Command Operation \N Normal mode — no error control; data buffered \N1 Direct mode — no error control; data not buffered \N2 MNP only — try MNP; disconnect if not successful \N3 MNP or normal — try MNP; fallback to normal async \N4 LAPM only — try LAPM; disconnect if not successful \N5 LAPM or normal — try LAPM; fallback to normal \N6 LAPM or MNP — try both protocols; disconnect if not successful \N7 LAPM, MNP, or normal — try both protocols; fallback to normal if not successful
Protocols Serial Port Flow Control — \Q The \Q commands set the type of flow control used by the serial port. If the serial port speed exceeds that of the modem connection, characters may be sent by the DTE to the modem faster than it can send them to the remote modem. The modem holds characters in an internal buffer until they can be transmitted. When this buffer is full, the modem uses flow control to stop data from the DTE.
Protocols XON/XOFF Pass Through — \X This option is active when flow control of the modem by the DTE has been selected for XON/XOFF and the connect mode is MNP-only or normal. It enables or disables sending local flow control characters (XON/XOFF) to the remote modem as well as being acted on in the local modem. In MNP-only mode the modem treats incoming XON/ XOFF characters from the remote modem as data characters. In normal mode the modem will look at the \G command and act accordingly.
Protocols Break Control — \Kn Use \Kn (n = 0-5) to indicate the action taken by the modem when a break is encountered. Command Operation \K Break option 0 \K1 Break option 1 \K2 Break option 2 \K3 Break option 3 \K4 Break option 4 \K5 Break option 5 Conditions under which breaks may occur are explained below with descriptions of the modem’s response under the different \K command break options.
Protocols A break is received from the remote modem while the modem is in connect state during a normal connection (no protocol, data buffered).
Protocols Transmit Break / Set Break Length — \B The \B commands tell the local modem to send a break signal to the remote modem. In all modes except direct, S79 determines the length of the break sent to the DTE by the modem receiving a break signal over the link. S79 may be set directly or via \Bn where n=1-255 in 20 ms increments. The default is 35 (700 ms).
Chapter 7 Test Mode Operation Diagnostic tests are used to isolate faults in the communications path. Diagnostic tests terminate after the period of time specified by S18. If S18 is set to 0, the timer is disabled and tests will run continuously. Tests may also be terminated by the &T command. When in test modes without a test pattern, issue the escape sequence +++ to return to command mode before terminating the test with the &T command.
Test Mode Operation LDL, RDL, and RDL/TP tests are initiated after making an online data connection in normal or direct mode only. LAL and LAL/TP are initiated while in offline command mode. These tests can be initiated by AT commands or by using the LCD front panel SELECT TEST menus. Refer to Table 7-2. Note Bold text indicates command parameter defaults. Table 7-2.
Test Mode Operation Testing the Local Modem Test local operation with the modem offline in command mode. Use LAL and LAL/TP to test the local modem and the communications to the local DTE. Note Figures 7-1 through 7-5 include LED test indications. These indications are valid when DTE options are set by factory option set #1 and RTS is active from the DTE. Where indicated, RD and/or TD may be on, off, or flashing depending on the type of DTE and its operating state.
Test Mode Operation To determine if the data cable is defective replace it with a properly configured cable with electrical continuity. If the cable checks out but the problem remains, the DTE is defective. If all local equipment checks out, proceed to the“Testing the Remote Modem” section on page 7-4. Issue an escape sequence followed by &T1 to exit analog loopback.
Test Mode Operation Local Digital Loopback — &T3 After making the data connection, enter the escape sequence to return to command mode. Entering &T3 puts the local modem in digital loopback. The remote operator can now send a test message which is looped back to the remote terminal screen. If the test timer (S18) was loaded before issuing the &T3 command the local modem exits the test after the specified number of seconds and returns to command mode. If not, enter &T to exit the test.
Test Mode Operation Remote Digital Loopback — &T6 The initiating modem signals the remote modem to go to Digital Loopback. The remote modem receives and then retransmits data back to the local modem. If Digital Bilateral Loopback is enabled on the remote modem, the remote DTE is looped back to itself (Figure 7-4). Figure 7-4. Remote Digital Loopback with Digital Bilateral Loop Enabled at the Remote Site After making the data connection, enter the escape sequence to return to command mode.
Test Mode Operation Exiting RDL/TP the modem responds with a three digit value between 0 and 255 representing the number of errors which occurred during test pattern detection. If errors occur, repeat the test several times to verify the consistency of the problem, then use the analog loopback tests to isolate the problem. Figure 7-5. Local Modem Initiating Remote Digital Loopback with Test Pattern Test Pattern — %T In Test Pattern, transmitted data from the local DTE is blocked and replaced by a V.
Test Mode Operation DTE Controlled Remote Digital Loopback (Pin 21) — *RD To enable DTE Controlled Remote Digital Loopback, enter *RD1. Enabled, the modem goes into Remote Digital Loopback when it detects an off-to-on transition of pin 21 while in the online data mode. The test ends when it detects an on-to-off transition of pin 21 and then returns to online data mode. To disable this function enter the *RD command.
Chapter 8 Security The V.3600 series of modems provides three features to assure secure operation of the modem. These features are front panel password protection, autocallback, and secure mode of operation. Front panel password protection is discussed in Chapter 4. Two levels of major security operation are available: high and low. The AT commands for each level are explained below.
Security Low Security Operation Low security operation provides password protection against unauthorized dial-up access. High security is another feature which is discussed later in the “High Security” section on page 8-4. The security feature can be enabled/disabled with AT commands when operating on a dial-up system. Transmitted data and received data lines are suppressed to the host DTE during security validation; all other signals (CTS, DSR, RI, etc.) operate as selected.
Security After receiving the $, the secure remote modem accepts the security code and waits for a carriage return. Entering more than ten characters is invalid and causes the secure modem to disconnect. Entering a valid password causes the calling party’s DTE to display PASSWORD ACCEPTED. Local Operation When accessing the local modem, the password is not required except when the user wants to change a security option.
Security Low Security Commands The following AT commands operate low security: Set Password — $S=x The $S=x command sets an empty password location to x. This command only applies when no password or only one is stored in memory. It cannot be used to change a password. Changing a Password — $C=x, y The $C=x,y command changes either password where x represents the old password and y is new one. Deleting a Password — $C=x, The $C=x,- command deletes password x from memory.
Security Capacity The modem stores in nonvolatile memory the password, security level, callback phone number, and status information for 50 users. Operating without High Security The modem is factory set with security disabled. In this mode the local DTE is connected to the local modem as usual, but the command to enable or view the status of the security feature will be accepted and processed. Operating with High Security With high security enabled, each user must follow the appropriate logon procedure.
Security Superuser The superuser has access to all user information for administrative purposes and can change user logon requirements and privileges. Superuser status can be gained at the local modem or from a remote Motorola or UDS modem via remote configuration, if the “Remote Superuser” option is enabled. The superuser must first logon as a regular user, then request the superuser privilege.
Security After seven calls (the default in remote configuration), the ILLEGAL ATTEMPTS counter will have reached maximum and the user will be suspended. Default Passwords The modem is shipped from the factory with a default password for the superuser and for one regular user. They are • SUPERUSER — (System administrator) • USER 1 — (User number 1) Passwords for users 2 through 50 are left blank. It is recommended that the superuser change the default SUPERUSER and USER 1 passwords as soon as possible.
Security Disabling High Security — $D Enter the $D command to disable security. The modem will operate as a nonsecure unit except that it will respond to enable and check security status commands. Setting Passwords — $Pn=pw$pw Select a password between 4 and 34 printable ASCII characters. To store the password enter AT$Pn=pw$pw where n is the user number (0-50) and pw is the new password which is entered twice to ensure that is has been entered correctly.
Security Set User Callback Number — $Cn=m The callback number, used with level 2 or 3 security, is dialed by the modem after a user has successfully called in from a remote location and entered his password. Level 1 security does not require a callback number; however, if the security level is changed to level 2 or 3 a callback number will be required. The callback number should be programmed initially using the $Cn=m command. Where n is the user number and m is the callback number.
Security When the superuser logs on, the secure V.3600 automatically displays any illegal attempts since the last superuser logon. If it is not reset, the illegal attempt count will remain and the superuser will not be reminded unless more illegal attempts occur. To manually request this same information enter AT$M The V.
Security Display User Status — $S? Enter the $S? command to indicate whether or not the current user has superuser status. The V.3600 responds with one of the following responses: SUPERUSER STATUS NORMAL STATUS Verify User Information — $In, $IBn Security level and callback number can be displayed using either the $In or $IBn command. To display the assigned security level and callback number for a single user enter AT$In where n is the user number. A regular user can only check his own information.
Security Remote Logon Procedure — $n=pw The remote logon procedure is required to access a secure V.3600. When calling into the secure V.3600 from a remote location the user is prompted to enter a password. The password must be entered as $n=pw where n is the user number and pw is the user’s password.
Chapter 9 Fax Operation The V.3600 can send and receive fax documents at speeds up to 14,400 bps, with the appropriate software. As a fax modem, the modem conforms to EIA-578, which defines a standard interface between a PC with fax software and the DCE as a fax modem. When used with a Class 1 fax software package, V.3600 is CCITT Group 3 compatible and can send and receive documents at 2400, 4800, 7200, 9600, 12,000, or 14,400 bps with any Group 3 fax machine or PC with a fax modem.
Fax Operation Modem Initialization For fax operation, most fax software packages are equipped with a fax initialization command string. Entering this command sets the active profile for fax operation. In some cases certain options should be modified for particular requirements. The fax software manual provides information about requirements. Fax Defaults Factory defaults, along with the initialization command, support fax operation.
Fax Operation Fax Associated Options A number of options can be changed without any effect on fax operation. These include items like speaker volume and pause for carrier. Appendix E lists the AT commands. These commands can be incorporated by personal preference into the initialization command. Compare fax operation requirements with Appendix A and if necessary generate an initialization command string compatible with the software and the modem.
Fax Operation The Class 1 standard assumes a serial asynchronous DTE-DCE connection using EIA-232D (or CCITT V.24) circuits. EIA-232D circuits AB (signal ground), BA (transmitted data), and BB (received data) are required for fax operation, while additional circuits are optional. Refer to Chapter 2 for hardware installation and EIA-232D data interface information.
Fax Operation AT Responses to the ATD Command The function of this command is country-specific. The AT responses to the ATD command are as follows: NUMBER LIST FULL Call failure; the delayed number list cannot store any more numbers. DELAYED NUMBER WAIT xx MINUTES Call failure; the number is on the delayed list and the call is delayed xx minutes. After dialing the specified number in fax mode, the modem generates 1100 Hz CNG tones in accordance with T.
Fax Operation If the DTE sends a character while executing the answer command and before CED is completed, the call is released and the modem will send the NO CARRIER result code. On Hook — H In fax mode, the H command instructs the modem to stop any transmission and terminate the call by going on hook. Off Hook — H1 The H1 command instructs the modem to go off hook. In fax mode, this might be used when the user has used manual dialing to place a fax call.
Fax Operation Transmit Silence — +FTS=(Time) The command +FTS=(Time) causes the modem to wait in silence for the specified amount of time and then send the OK result code to the DTE. The (Time) value is in 10 ms increments from 0 to 2.55 seconds. The modem aborts the command and sends an OK result code if the DTE sends an additional character, which is discarded, during the command execution. This command returns an ERROR result code if issued while the modem is on hook.
Fax Operation Table 9-1. Values for Fax Modulation (Continued) Value Modulation Speed 24 V.27 ter 2400 bps 48 V.27 ter 4800 bps 72 V.29 7200 bps 73 V.17 7200 bps 74 V.17 7200 bps * 96 V.29 9600 bps 97 V.17 9600 bps 98 V.17 9600 bps * 121 V.17 12000 bps 122 V.17 12000 bps * 145 V.17 14400 bps 146 V.17 14400 bps* *with short train The V.3600 returns an ERROR result code if any of the above commands are issued while the modem is on hook.
Fax Operation HDLC Transmit — +FTH=(Mod) +FTH=(Mod) causes the modem to transmit HDLC framed data using the modulation and speed selected with the (Mod) parameter. For V.27 ter, V.29, and V.17 modulations, the modem will first transmit the required training sequence (with echo protector tone). Configured for HDLC transmission, the modem transmits HDLC flags and returns the CONNECT result code.
Fax Operation Class 1 Result Code — +FCERROR If the modem detects any carrier or tone that differs from that specified in a +FRM or +FRH command, it sends the +FCERROR result code and returns to command state, allowing the DTE to attempt a recovery. The numeric form of this response is +F4. Fax Autoanswer — +FAA= The modem can be set up to automatically detect if a fax or data call is being answered. The command +FAA=1 enables this function and +FAA=0 disables it.
Chapter 10 Status Registers S-Registers Most modem configuration information is stored in a part of memory called status (S) registers. During operation this information is used to determine modem functions. Information stored in S-registers can be changed by the AT or V.25 command sets and by pushbuttons in response to the LCD prompt. These are the preferred methods. Some software programs also access S-registers by the AT command set, but this action is transparent to the user.
Status Registers Figure 10-1 shows how the inputs to an S-register (S22 in this example) are used to select a particular option. Bits 3 and 2 of S22 control speaker options. Some communication software packages may use the AT command set. For example purposes, bit values are arbitrary. Bit values for S-registers must not be confused with the total register value.
Status Registers Figure 10-2. Calculating S-Register Values S-Register Operation — Sn?, Sn?^ Enter ATSn? to read a register value, where n=register number for a decimal value or ATSn?^ for a hexadecimal value. For example, to determine the current backspace character enter ATS5? The screen will show the ASCII value of the backspace character stored in register S5.
Status Registers Note Not all registers can be set by the ATSn=v (or ^v) command. Some registers are for reference only. To change the escape character from + to the Esc key (ASCII value of 27) enter ATS2=27 To return the modem to the command mode press the Esc key three times: (pause) Esc Esc Esc (pause) Individual Bit Command — Sn . # =v Some operators use AT commands as the primary method of changing S-register options. However, some options stored in registers do not have an associated AT command.
Status Registers Autoanswer — S0 This register turns the autoanswer option on or off. Set the register to 0 to turn autoanswer off. Set the register to any value other than zero (1-255) to turn autoanswer on. The number selected is the ring count the modem answers on. For example, if S0 equals 4, the modem answers the call on the fourth ring. The default value is 1. Ring Count — S1 This register contains the ring count for a current incoming call and should not be changed.
Status Registers Pause for Ringback and Carrier Detection / Wait for 2nd Dial Tone — S7 If ringback is not detected in the number of seconds in S7 (1-255), the modem disconnects and sends the NO CARRIER message or code. If ringback is detected, the modem begins to look for a carrier. If carrier is not detected within the number of seconds in S7, the modem hangs up and sends the NO CARRIER message or code. Values between 1 and 255 may be used. The default value is 30 (seconds).
Status Registers Escape Sequence Pause — S12 The escape sequence to return to command mode from data mode requires two pauses, one before and one after the escape characters. The pauses prevent the modem from responding to a character sequence which might contain the escape sequence as part of its normal data transmission. S12 contains the pause interval in 0.02 second increments. The factory setting is 50, equivalent to 1 second (50 x 0.02 sec). When S12 is 0, timing is not a factor.
Status Registers Bit Mapped — S14 Note In the tables for bit mapped S-registers, bold text indicates bit value defaults. Note When bit-mapped S-registers have parallel AT commands, the commands are listed in the register tables as a cross reference. If a command does not exist for the option, the column is left blank.
Status Registers System Tests — S16 This register contains the status of system test options.
Status Registers Bit Mapped — S21 Bit Value Command Description 6, 0 00 10 01 11 &S &S1 &S2 &S3 DSR forced on DSR on when online DSR off 5 seconds after disconnect DSR follows off hook (OH) 5, 1 00 10 01 &C &C1 &C2 11 &C3 DCD always on DCD on while carrier present DCD on except for 5 seconds after disconnect DCD follows RTS on remote modem; not valid in reliable mode 2 0 1 &R &R1 CTS follows RTS by S26 delay CTS always on 4, 3 00 01 &D &D1 10 11 &D2 &D3 Modem ignores DTR Modem assume
Status Registers Bit Value Command Description 7 0 1 &P &P1 Make / break ratio (US) 39/61 Make / break ratio (UK) 33/67 Bit Mapped — S23 Bit Value Command Description 0 0 1 &T5 &T4 Remote digital loop request denied Remote digital loop request granted 5-1 --- --- Reserved 7, 6 &G &G1 &G2 -- No guard tones 550 Hz guard tone 1800 Hz guard tone Not used 00 01 10 11 S24 Not used DTR State Recognition — S25 The S25 register specifies the amount of time (0-255) in 0.
Status Registers Bit Mapped — S27 Bit Value Command Description 1, 0 00 01 10 11 &M &M1 &M2 &M3 Async Sync data / async dial Sync data / dial through DTR Sync data / manual dial 2 0 1 &L &L1 and &L2 Dial-up line Leased line 3 -- -- Reserved 5, 4 00 01 10 11 &X &X1 &X2 -- Internal clock External clock Receive clock Not used 6 1 0 -- Enable async DTR dialer Disable async DTR dialer 7 -- -- Reserved Lookback Timer — S28 The S28 register specifies the amount of time in 1.
Status Registers Bit Value Command Description 6, 3 -- -- Reserved 7 0 1 *FB *FB1 DTE fallback disabled DTE fallback enabled Bit Mapped — S30 Bit Value Command Description 0 -- -- Reserved 1 0 1 -- V.25 ASCII V.25 EBCDIC 2 0 1 -- V.25 VAL enabled V.25 VAL disabled 4, 3 -- -- Reserved 5 0 1 -- NRZ V.25 NRZI V.25 7, 6 00 01 10 11 &M &M4 &M5 &M6 V.25 disabled V.25 bisync enabled V.25 SDLC enabled V.25 Async enabled S31 Reserved V.
Status Registers Bit Mapped — S32 Bit Value Command Description 0 0 1 &L1 &L2 2-wire (leased line only) 4-wire (leased line only) 1 0 1 *LC1 *LC2 Line current disconnect = short Line current disconnect = long 2 0 1 *LC *LC1 or *LC2 Line current disconnect = disable Line current disconnect = enable 3 0 1 *DB *DB1 Dial backup = manual Dial backup = automatic -- Reserved 7-4 -- S33 Reserved Bit Mapped — S34 Bit Value Command Description 0 -- -- Reserved 1 0 1 *DG *DG1 Bilate
Status Registers Remote Configuration Guard Time — S42 Select the remote configuration guard time (0-255) in 20 ms intervals. The default is 50 (1 sec). S43 Reserved XON Character from DTE — S44 Select the XON character (0-127) to be sent from the DTE. The default value is ASCII 17. XOFF Character from DTE — S45 Select the XOFF character (0-127) to be sent from the DTE. The default value is ASCII 19. S46-48 Reserved XON Character to DTE — S49 Select the XON character (0-127) to be sent to the DTE.
Status Registers Leased Line Transmit Level — S52 The S52 register selects leased line transmit level from 0 to -30 dBm in 1 dBm increments. The default value is 0.
Status Registers 6, 5 00 01 10 11 \Q4 \Q5 \Q6 \Q7 Disable flow control from DCE Enable XON/XOFF flow control Enable CTS flow control to the DTE Enable CTS flow control to the DTE 7 -- -- Reserved S55 Reserved V.
Status Registers Inactivity Timer — S58 The S58 register specifies the number of minutes the modem waits before terminating a call when no data is sent or received. This register is active when in error control mode. 0 disables timer. Issue the \Tn command to load inactivity timer, n=0-255 minutes. Bit Value Command Description 7-0 0 \T Disable 1-255 \Tn (n=1- Timer value in minutes 255) Break Control — S59 The S59 register determines the action taken when a break is encountered.
Status Registers 6 7 0 \R 1 \R1 0 1 \V \V1 RI blinks for ring and remains on for duration of call RI blinks for ring and turns off when call is answered Disable protocol response messages Enable protocol response messages DTE Options — S61 The S61 register indicates the character size and parity. This register is for reference only.
Status Registers Auto-Reliable Fallback Character — S64 The S64 register stores the selected ASCII value of the auto-reliable fallback character. Bit Value 7-0 0 Command Description %A Disable auto-reliable fallback character ASCII value 1-127 1-127 %An S65-66 Reserved Link Speed Status — S67 The S67 register indicates the true data link (DCE) speed. This register is for reference only.
Status Registers DCE Independent Speed — S69 The S69 register selects the DCE independent rate operation. When S69 is 0, DTE and DCE rates are equal and the maximum originate connect rate up to 14,400 bps is determined by S80. When S69 is non-zero, the maximum originate connect rate is determined by S69.
Status Registers Operating Mode — S70 The S70 register determines the protocol operating mode and action taken on an MNP link attempt failure. LAPM is assigned highest priority. Example: With \N7 selected the modem tries an LAPM connection first; if unsuccessful the modem tries an MNP connection; if also unsuccessful, the modem connects in normal mode. Modes allowing protocol fallback are referred to as auto-reliable.
Status Registers Bit Mapped — S72 Bit Value Command Description 0 0 \J 1 \J1 Disable slaved DTE/DCE (constant speed DTE on) Disable slaved DTE/DCE (constant speed DTE on) 2, 1 -- -- Reserved 3 0 1 &R9 &R2 CTS does not follow DCD CTS follows DCD 6-4 -- -- Reserved 7 -- Disable autocallback Enable autocallback 0 1 Password Timeout — S73 S73 sets the length of time the remote user has to enter a password before the secure V.3600 drops the call. The default is 0.
Status Registers Callback Retry Delay — S76 The length of time that the modem waits, after an unsuccessful attempt to connect to the remote unit at the programmed callback number, before trying to place the call again. The default is 15 seconds. Bit Value Command 7-0 0-255 -- Description Time in seconds (0 = disable) Lockout Threshold — S77 Set the number of incorrect remote user password attempts that can be made before the call is dropped. The default is 0.
Status Registers Serial Port or DTE Speed — S80 The S80 register indicates the serial port speed. Bit Value Command Description 4-0 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111 10000 10001 10010 10011 10100 -- 300 bps 600 bps 1200 bps 2400 bps 4800 bps 7200 bps 9600 bps 12,000 bps 14,400 bps 16,800 bps 19,200 bps 21,600 bps 24,000 bps 26,400 bps 28,800 bps 31,200 bps 33,600 bps 38,400 bps 57,600 bps 11,5200 bps V.
Status Registers Minimum DCE Speed — S81 Bit Command Description 4-0 00000 00001 00011 00100 00101 00111 01000 00110 01001 01010 00010 01011 01100 01101 01110 01111 10000 10001 10010 Value %L %L1 %L2 %L3 %L4 %L5 %L6 %L7 %L8 %L9 %L10 %L11 %L12 %L13 %L14 %L15 %L16 %L17 %L18 Disabled Disabled 1200 bps 2400 bps 4800 bps 9600 bps uncoded 9600 bps trellis 7200 bps 12,000 bps 14,400 bps 600 bps 16,800 bps 19,200 bps 21,600 bps 24,000 bps 26,400 bps 28,800 bps 31,200 bps 33,600 bps 7-3 -- -- Reserved Neg
Status Registers S85-S87 Reserved Modulation Type S88 Bit Value 3-0 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 Command Description -- Auto mode V.21 B103 Reserved B212A V.22 bis V.27 (lease line only) Reserved V.29 (lease line only) Reserved V.33 (lease line only) V.32 bis V.34 Reserved 7-4 S89-S90 Reserved Current Modulation S91 The S91 register is for reference only.
Status Registers S92 - S94 Reserved V.34 Settings — S95 Bit Value Command Description 0 0 1 -- Disable V.8 for non-V.34 answer Enable V.8 for non-V.34 answer 3-1 -- -- Reserved 4 0 1 -- Disable non-linear encoding Enable non-linear encoding 5 0 1 -- Disable pre-emphasis Enable pre-emphasis 6 0 1 -- Disable constellation shaping Enable constellation shaping 7 0 1 -- Precoding disabled Precoding enabled V.
Chapter 11 V.25 bis Autodialer V.25 bis is an option that allows dialing functions to be controlled using synchronous data. Select V.25 bis through the appropriate &M command in the AT command set (refer to the “Asynchronous / Synchronous Mode Selection — &M” section on page 5-25). If using the LCD, 1) Scroll through the menu to Main Menu 5, MODIFY CONFIGURATION. 2) Advance to and enter the DTE PARAMETERS submenu. 3) Select SYNC DATA. 4) Advance to DIAL METHOD. 5) Select one of V.25 BISYNC DIALER, V.
V.25 bis Autodialer Autodialer Command Strings and Parameters Most command strings for the autodialer include two parts: the command itself and the parameters that follow. For the purposes of this chapter, parameters can be telephone numbers or anything appropriate to V.25 bis as described in the following text. Parameters are separated by semicolons. For example: PRN a; nnn . . . n where a= the phone number address in memory and nnn...n= the phone number. The a and the nnn...n are both parameters.
V.25 bis Autodialer Access these formats using: Asynchronous dial/asynchronous data &M &M1 Asynchronous dial/synchronous data &M2 Dials stored number when DTR off/on transition is detected/sync data &M3 Manual dial/sync data &M4 V.25 bis dialer/BISYNC protocol/sync data (ASCII) &M5 V.25 bis dialer/SDLC protocol/sync data (NRZ) &M6 V.25 bis async dial/sync data &M7 V.25 bis async dial/async data &M8 V.25 bis dialer w/BISYNC protocol/sync data (EBCDIC) &M9 V.
V.25 bis Autodialer INVPS This message has one of three possible meanings: 1) Any parameter set ending with a semicolon ; Any parameter set containing too many or not enough parameters; this includes any command: - entered without parameters that requires parameters - entered with parameters that does not require parameters 2) Any parameter containing too many characters.
V.25 bis Autodialer V.25 bis Commands and Responses The following sections describe the commands used with the V.25 bis autodialer and explain the responses received when each command is executed. Dial Command — CRN nn...n The dial command is a CRN followed by the number to be dialed nn...n. The modem accepts up to 40 dial parameters, excluding the CRN command and any leading spaces. Responses: VAL Valid command received.
V.25 bis Autodialer CFICB Call failure - delayed number list is full. DLC;xxx Call failure - number is on delayed list and the call is delayed for xxx minutes. Program Number Command — PRN a;nn...n The program number command is PRN followed by the one digit decimal address a and the number to be stored nn . . . n. Each address can store up to 31 dial parameters. Ignored characters in the dial number are not stored. Nine stored numbers are available at addresses 1-9.
V.25 bis Autodialer If the call fails to connect and the number is linked with other numbers, the autodialer tries to call the next number in the list of linked numbers. Request List of Stored Numbers — RLN The request list of stored numbers command is an RLN. Responses: INVCU Invalid command - command unknown. Example: TLN INVMS Invalid command - message syntax error. Example: RLN; If no number is stored at the specified address nothing is returned for that address.
V.25 bis Autodialer Connect Incoming Call — CIC No parameters are required. If there is an incoming call, the modem immediately answers the call. If no call is incoming, the command is ignored. Responses: Same as for the DIC commandI Redial Last Number — CRR n The CRR n command redials the last number a maximum of n times. If no parameters are present, the modem redials once.
V.25 bis Autodialer If circular linking (1 to 8 to 7 to 1) is used, dialing is discontinued after the addressed number in the dial command has been dialed twice. If only one parameter follows the PRL command, the number at address a is unlinked from its forward link. For example, if the link list 4 to 8 to 3 to 7 to 9 to 1 exists and PRL 7 is received, 7 would be unlinked from 9, but not from 3. This would result in two link lists: 4 to 8 to 3 to 7 and 9 to 1. Responses: VAL Valid command received.
V.25 bis Autodialer The modem cannot dial a number that is on the delayed call list until the prescribed time, or until power to the modem is turned off and then on again. A example list of delayed numbers is as follows: RLD LSD 1;5551212;D02001 LSD 2;5551414;D04059 If there is no response to the RLD command, there are no numbers on the delayed call list.
V.25 bis Autodialer Request List of Version — RLV The request list of version information command is an RLV with no parameters. Responses: INVCU Invalid command - command unknown. Example: TLV INVMS Invalid command - message syntax error.
V.25 bis Autodialer INVMS Invalid command - message syntax error. Examples: PRO;0;1;1 PRO; INVPS Invalid command - parameter syntax error. Examples: PRO 0;1;0; PRO 0;1;1;1 PRO PRO 0;001;1 INVPV Invalid command - parameter value error. Examples: PRO 0;1;Q PRO Q;1;1 PRO 0;0;0 PRO 68;1;0 when option 68 is undefined for the modem. INVPVxxx Invalid command - parameter value error. Example: PRO 10;5;0;0;0;2;1 This invalid message can be returned when a block of options is being changed.
V.25 bis Autodialer Save Current Settings — PRK PRK saves the current option settings. Responses: VAL Valid command received. Transmitted on receiving an errorfree command with no transmission error such as a parity error. Confirmation is sent before the command is executed. INVCU Invalid command - command unknown. Example: TRK INVMS Invalid command - message syntax error.
V.25 bis Autodialer INVPS Invalid command - parameter syntax error. Examples:PRP 1; PRP 1;1 PRP 001 INVPV Invalid command - parameter value error. Example: PRP 5 where factory default 5 is not defined for the modem. Current modem factory options are 1-9. Request List of Stored Options — RLO xxx; yy The request list of stored options command is RLO followed by an optional 1 to 3 digit decimal address and a 1 or 2 digit decimal count.
V.25 bis Autodialer LSO List stored options. The separator {sep} for BISYNC is an LSO sequence for the sync format (the last LSO string terminates with per V.25 bis). For synchronous bit oriented operation, each LSO string is treated as an individual message per V.25 bis. If no parameters follow, all stored options are sent to the DTE as LSOxxx;ooo{sep}xxx;ooo... Each value must be padded with leading zeros so that each field has three characters.
V.25 bis Autodialer Table 11-2. V.
V.25 bis Autodialer Table 11-2. V.25 Autodialer Options (Continued) Option Definition Settings Default 091: Line feed character ASCII or EBCDIC character range 10 dec ASCII; 37 dec EBCDIC 092: Guard tone 0 = None 1 = 550 Hz 2 = 1800 Hz 0 093: Carrier detect delay 0 - Off; 1 to 255 10 ms increments 6 (60 ms) 094: Loss of carrier disconnect 0 - Off 1 to 255 100 ms increments 14 (1.
V.25 bis Autodialer Table 11-2. V.25 Autodialer Options (Continued) Option Definition Settings Default 903: Bilateral loop - If enabled and a test is commanded, bilateral loop is defined as follows: Test Bilateral CommandedLoop Loop 1 Loop 2 Loop 2 Loop 1 Loop 3 Loop 4 Loop 4 Loop 3 Loop definitions per CCITT V.54.
Chapter 12 Maintenance Warning Disconnect power before performing maintenance. Although dangerous voltage levels are not exposed, disconnecting power ensures that no electric shock hazard is present. General The modem contains no internal electronic components that can be serviced or replaced by the user. Repairs should not be attempted by the user. Fuse Replacement Warning If a fuse fails, replace it with one of an equal type and rating. Repeated failure indicates a more serious problem.
Maintenance Before attempting diagnostic tests, verify that all connectors and plugs are firmly inserted. The test procedures identify the faulty component in a bad communications link. Calling Technical Support The Service and Support page at the back of this User’s Guide contains several phone and faxback numbers and the Web address. If calling Technical Support, please call from a location near the computer with the modem.
Appendix A Specifications Size Width Depth Height Weight Front Panel 7.0 inches (17.78 cm) 10.5 inches (26.67 cm) 2.25 inches (5.72 cm) 2 lbs. 13 oz. (1.28 kg) 32 ASCII character LCD Environmental Conditions Temperature: Operation +32° F to +122° F (0° C to +50° C) Storage -40° F to +158° F (-40° C to +70° C) Humidity: 0 to 95% relative humidity, noncondensing Power Requirements The modem can be ordered for operation with one of three power input options.
Specifications Modem Data Rates 300, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200, 33600 bps. Fax Rates 14400, 12000, 9600, 7200, 4800, and 2400 Modulations V.34, V.32, V.22, V.21, V.27 bis, V.29, Bell 103, Bell 1200, V.17, V.33, V.22 bis, V.32 bis Fax Modulation Modulation V.21 channel 2 V.27 ter V.27 ter V.29 V.17 V.17 V.29 V.17 V.17 V.17 V.17 V.17 V.
Specifications Carrier Detect Level Dynamic to -43 dBm Telco Connection 8-pin modular jack, dial and private lines Testing 511 PN pattern (per V.52) V.54 remote loopback control Line Equalization Automatic adaptive RTS/CTS Delay From 0 ± 2 ms to 90 ± 2 ms, user selectable in 10 ms increments (The default is 0 ms.) Link Layer Protocols V.42/V.42 bis error correction and compression protocol MNP levels 2-5 error correction and compression protocol V.
Appendix B Phone Jack Descriptions DIAL Pin Functions The DIAL jack connects to the PSTN dial-up lines. Pin functions are as follows: Pin Function 1, 2, 3 Not used 4R Ring side of telephone line 5T Tip side of telephone line 6, 7, 8 Not used TELSET/LEASED LINE Pin Functions The 8-pin TELSET/LEASED LINE jack allows a standard telephone or a leased line to be connected to the modem.
Appendix C Hardware Options Jumper Option Selection Modem configuration is controlled by front panel pushbuttons and the LCD, AT or V.25 bis commands, and one hardware option jumper located on the PC board. Normally, jumpers do not have to be changed. If a change is required, remove the modem cover. The jumper diagrams on the following pages indicate the factory settings. Removing the Cover Warning Disconnect power before removing the cover.
Hardware Options Bottom of the modem Slots - Open the two slots on one side of the modem first. Then open the two on the other side. Figure C-1. Cover Removal C-2 V.
Hardware Options Figure C-2 shows the jumper location. Figure C-2. Jumper Location for Ground Option V.
Hardware Options Figure C-3 shows a typical jumper configuration. Figure C-3. Typical Jumper Configuration Ground Option Jumper Signal ground is normally connected to chassis ground. If interference exists, isolate signal ground from chassis ground. * factory setting Replacing the Cover To replace the cover, align the lock clips, rear guide grooves, and front lock tabs. Press the cover in place until the lock clips engage the lock prongs. C-4 V.
Appendix D Fault Isolation Procedure Fault Isolation Procedure This diagnostic test procedure and the indicator lights built into the modem allow a rapid check of the terminals, modems, and telephone line interface. This procedure can be used to verify normal system operation and to isolate faulty equipment in case of failure. Ensure the units are turned on and remote loops are enabled at both sites before starting the fault isolation procedure.
Fault Isolation Procedure Modem and Telephone Line Check Part I 1) Configure the modem for LOCAL ANALOG LOOP WITH TEST PATTERN. This terminates the local modem telephone lines into 600 ohms and connects the local modem transmit output amplifier back to its own receiver through the AGC. Transmit input data from the terminal is inhibited and is substituted with a V.52 test pattern.
Fault Isolation Procedure Part II This part determines the performance of the local and remote modems and the telephone circuits. It also determines each modem’s ability to receive a transmitted signal from the other site, properly equalize and decode the signal and then loop this regenerated signal into the transmitter for transmission back to the other modem. This test applies to both leased line and dial line operation. 1) Configure the local modem for REMOTE DIGITAL LOOP WITH TEST PATTERN.
Appendix E Command Index and Defaults General This reference guide provides asynchronous command characters and their descriptions. The pages listed provide initial information on the commands. The S-registers listed are cross references (see the “Status Registers” section on page E-17). Note Bold text indicates command parameter defaults. Table E-1.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command H H1 H2 H3 I I1 I3 I4 I5 L, L1, L2 L3 M M1 M2 M3 Page 5-23 O O1 5-25 --- 5-6 S14 S14 S14 --- 5-24 5-24 5-24 S-Reg --S14 S14 -----S22 S22 S22 S22 S22 S22 Description Hang up † Forces modem off hook † Set H command to V.32 † Set H command to fast † Request product code Request EPROM CRC value Request product version Returns Motorola V.
Command Index and Defaults Table E-1.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command &L &L1 Page 5-36 &L2 &M 5-25 S-Reg S27 S27, S32 S27, S32 S27, S30 S27 S27 Description Dial line † Leased line 2-wire † Leased line 4-wire † Asynchronous dial / asynchronous data Asynchronous dial / synchronous data Dials stored number when DTR off / on transition is detected / sync data &M3 S27 Manual dial / sync data &M4 S30 V.25 bis autodialer with BISYNC protocol / sync data &M5 S30 V.
Command Index and Defaults Table E-1.
Command Index and Defaults Table E-1.
Command Index and Defaults Table E-1.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command \Kn \K \K1 \K2 \K3 \K4 \K5 \M \M1 \N \N1 \N2 \N3 \N4 \N5 \N6 \N7 \Q \Q1 Description Selects action when encountering a break Break option 0 Break option 1 Break option 2 Break option 3 Break option 4 Break option 5 6-5 V.42 fast detect data sequence disabled V.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command \V \V1 \V2 \V3 \V4 Page 10-18 S-Reg S60 S60 ---- Description Disable protocol result codes Enable protocol result codes -Connect DCE rate -Connect DCE rate/protocol -Connect DCE rx rate/DCE tx rate/ modulation mode/protocol \X 6-8 S54 No XON/XOFF characters to remote DCE \X1 S54 Pass XON/XOFF characters to remote DCE *AS 5-27 -Disable V.34 asymmetric bit rate *AS1 -Enable V.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command Page S-Reg Description *MM 5-27 -Automode (modulation) *MM1 -V.21 *MM2 -Bell 103J *MM3 -Reserved *MM4 -Bell 212A *MM5 -V.22 bis *MM6 -V.27 bis 4-wire leased only *MM7 5-27 -Reserved *MM8 -V.29 4-wire leased only *MM9 -Reserved *MM10 -V.33 4-wire leased only *MM11 -V.32 bis *MM12 -V.
Command Index and Defaults Table E-1. Synchronous Command Reference (Continued) Command *TDn *TH Page 5-33 5-27 S-Reg S51 S97 *TH1 S97 *TH2 S97 *TLn 5-36 S52 Description Sets dial transmit level -10 to -30 dBm Low V.34 rate selection threshold (10-6 BER) Medium V.
Command Index and Defaults Caller ID Commands Command *ID *ID1 Page 5-17 S-Reg --- Description Disable Caller ID Enable Caller ID Distinctive Ring Commands Command *DR *DR=1 Page 5-18 S-Reg S53 S53 Description Disable Distinctive Ring Enable Distinctive Ring Fax Commands Fax Command +FCLASS=0 +FCLASS=1 +FCLASS? +FCLASS=? +FAA= *FR Page 9-6 Description Service Class 0 (data modem) † Service Class 1 (fax modem) † Display current Service Class setting † Display available Service Class settings † 9-1
Command Index and Defaults Command Page Description NOTE: The (MOD) parameter can be one of the following values: 0 or Value Modulation Speed 3 V.21 channel 300 bps 24 V.27 ter 2400 bps 38 V.27 ter 4800 bps 72 V.29 7200 bps 73 V.17 7200 bps 74 V.17 7200 bps with short train 96 V.29 9600 bps 97 V.17 9600 bps 98 V.17 9600 bps with short train 121 V.17 12000 bps 122 V.17 12000 bps with short train 145 V.17 14400 bps 146 V.
Command Index and Defaults Security Commands Command Page Low Security $S=x 8-4 $C=x,y $C=x,$DR $D=x $D? or $E? $E=x High Security $Cn=m 8-9 $D $E? or $D? $EH=pw $F= pw$pw $IBn Description Sets an empty password location to x Changes either password where x represents the old password and y is the new one Deletes password x from memory Reset security Disables security where x is either password Displays the current status of security Enables security where x is either password 8-8 8-10 Set user callback
Command Index and Defaults $W0 8-9 Disable user changes (password and callback number) † $W1 Enable user changes (password and callback number) † $W2 $W? $$ $n=pw Enable remote superuser † Display user changes remote superuser option status Local logoff Local logon (n = user number and pw = password) 8-11 8-11 8-12 $S=pw 8-11 Request to enter superuser status (pw = password) †cannot be executed from remote configuration mode V.
Command Index and Defaults Remote Configuration Commands Command %P=n Page 5-42 Description Set remote configuration security code to value n (0 to 99999999) Display local modem remote configuration security code Clear security code 5-44 Disable remote configuration Enable remote configuration Remote configuration DTE speed = 300 bps Remote configuration DTE speed = 600 bps Remote configuration DTE speed = 1200 bps Remote configuration DTE speed = 2400 bps Remote configuration DTE speed = 4800 bps Remo
Command Index and Defaults Status Registers S-Reg RO/ RW Page Function S0 RW 10-5 Ring to answer S1 RO Ring count S2 RW Escape sequence character S3 RW End-of-line character S4 RW Line-feed character S5 RW 10-5 Backspace character S6 RW Pause before blind dialing S7 RW Pause for carrier S8 RW Pause for comma S9 RW Carrier validation S10 RW Loss carrier delay time S11 RO 10-6 DTMF tone duration S12 RW Escape sequence pause S14 RW 10-8 Bit mapped S16 RO 10-9 System tests S18 RW Test timer S21 RW 10-10 Bi
Command Index and Defaults S-Reg RO/ RW Page RW 10-14 Function Remote configuration escape character S42 RW Remote configuration guard time S44 RW DTE XON character S45 RW DTE XOFF character S49 RW DCE XON character S50 RW DCE XOFF character S51 RW Dial transmit level S52 RW 10-16 Lease transmit level S53 RW Bit mapped S54 RW 10-16 Bit mapped S56 RW 10-17 V.
Command Index and Defaults S-Reg RO/ RW Page Function S91 RW 10-27 Current modulation S95 RW V.34 settings S96 RW 10-28 V.34 settings S97 RW Bit mapped RO=Read only RW=Read or write V.
Command Index and Defaults V.25 bis Dialer Commands Synchronous Command CIC CRN nn...n 0 - 9 * # W > = < P T & ; Space, dash, parentheses, period CRRn CRSa DIC PRK PRLa;b PRNa; nn...n PROxxx;yy;0 ;0... PRPn 11-13 RLD 11-9 RLL RLN RLOxxx;yy 11-10 11-7 11-14 RLV 11-11 E-20 Page Description 11-8 11-5 Connect incoming call command Dial command (nn...
Command Index and Defaults V.
Command Index and Defaults Response Message DLC;xxx INC INVCU INVMS INVPS INVPV VAL E-22 Meaning Delayed call - call attempt to number is delayed for xxx minutes Incoming ring detected Invalid command - command unknown Invalid command - message syntax error Invalid command - parameter syntax error Invalid command - parameter value error Valid command received V.
Command Index and Defaults Factory Option Sets Factory Option Set #1 (Asynchronous Dial-up with V.42 bis Protocol) (AT&F or AT&F1) MODEM OPTIONS DCE rate - 33600 Modulation automode V.34 rate threshold high V.34 asymmetric rate enabled Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Dial line Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set # 2 (Asynchronous Dial-up without V.42 bis Protocol) (AT&F2) MODEM OPTIONS DCE rate - 33600 Modulation automode V.34 rate threshold low * V.34 asymmetric rate enabled Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Dial line Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set #3 (Synchronous Dial-up) (AT&F3) MODEM OPTIONS DCE rate - 33600 Modulation automode V.34 rate threshold low * V.34 asymmetric rate disabled * Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Dial line Jack type RJ11 Line current disconnect long Long space disconnect disabled * V.
Command Index and Defaults Factory Option Set # 4 (Synchronous 4-wire Leased Line) (AT&F4) MODEM OPTIONS DCE rate - 33600 V.34 modulation * V.34 rate threshold low * V.34 asymmetric rate disabled * Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Leased line * 4-wire * Transmit level - 0 dBm * Dial backup manual * Lookback timer - 15 min * Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set #5 (Asynchronous 4-wire Leased Line with V.42bis Protocol) (AT&F5) MODEM OPTIONS DCE rate - 33600 V.34 modulation * V.34 rate threshold high V.34 asymmetric rate enabled Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Leased line, 4-wire * Transmit level - 0 dBm * Dial backup manual * Lookback timer - 15 min * Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set # 6 (Asynchronous 4-wire Leased Line without V.42 bis Protocol) (AT&F6) MODEM OPTIONS DCE rate - 33600 V.34 modulation * V.34 rate threshold low * V.34 asymmetric rate enabled Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Leased line, 4-wire * Transmit level - 0 dBm * Dial backup manual * Lookback timer - 15 min * Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set # 7 (Synchronous 2-wire Leased Line Normal Originate) (AT&F7) MODEM OPTIONS DCE rate - 33600 V.34 modulation * V.34 rate threshold low * V.34 asymmetric rate disabled * Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Leased line, 2-wire * Transmit level - 0 dBm * Dial backup manual * Lookback timer - 15 min * Jack type RJ11 Line current disconnect long Long space disconnect disabled * V.
Command Index and Defaults Factory Option Set # 8 (Synchronous 2-wire Leased Line Forced Answer) (AT&F8) MODEM OPTIONS DCE rate - 33600 V.34 modulation * V.34 rate threshold low * V.34 asymmetric rate disabled * Forced answer * Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Leased line, 2-wire * Transmit level - 0 dBm* Dial backup manual * Lookback timer - 15 min * Jack type RJ11 Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Factory Option Set #9 (Synchronous V.25bis Dialer) (AT&F9) MODEM OPTIONS DCE rate - 33600 Modulation automode V.34 rate threshold low * V.34 asymmetric rate disabled * Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Transmit clock internal Dial line Jack type RJ11 Line current disconnect long Long space disconnect disabled V.
Appendix F ASCII and EBCDIC Characters Hexadecimal equivalents of binary and decimal numbers are as follows. Binary 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Decimal 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Hexadecimal 0 1 2 3 4 5 6 7 8 9 A B C D E F Hexadecimal Examples: 0101 1001 1110 1011 =5B hex 1101 =9D hex 0010 =E2 hex V.
ASCII and EBCDIC Characters The following table lists ASCII decimal, hexadecimal, and equivalent character values, and EBCDIC characters. The table shows only available keyboard symbols. Control keys are shown in the right column of the first table.
ASCII and EBCDIC Characters ASCII Symbol ! " # ASCII Symbol $ % & ’ ( ) * + , .
ASCII and EBCDIC Characters ASCII Symbol C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i F-4 Decimal Hex EBCDIC 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67 68 69 ------¢ (cent) .
ASCII and EBCDIC Characters ASCII Symbol j k l m n o p q r s t u v w x y z { | } ~ DEL ---------------- Decimal Hex EBCDIC 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E | , % _ > ? ACK0 --------‘ (single quote) : (colon) # (pound) @ (at) ’ (apostrophe) = (equal) " (double quote) -a b c d e f
ASCII and EBCDIC Characters ASCII Symbol ---- Decimal Hex EBCDIC 143 144 145 8F 90 91 --j Decimal 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 Hex EBCDIC 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 l m n o p q r --x ) ± --~ s t u v w x y z -Î È [ Š • S0 (SM0) S1 (SM1) F-6 V.
ASCII and EBCDIC Characters Decimal 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 Hex B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 EBCDIC S2 (SM2) S3 (SM3) S4 (SM4) S5 (SM5) S6 (SM6) S7 (SM7) S9 (SM9) -° ] (close bracket) ≠ (not equal) -{ (open brace) A B C D E F G H I --(unprintable character) -(unprintable character)
ASCII and EBCDIC Characters Decimal 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 F-8 Hex DA DB DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF EBCDIC ------\ (back slash) -S T U V W X Y Z --(unprintable character) ---0 1 2 3 4 5 6 7 8 9 | ----(trailing pad) V.
Appendix G Abbreviations and Acronyms A ABT ac ACK ACR ACU ADD ADDR ASCII AT&T B BER BERT BIL LB Bit bps BSC C C CA CC CCITT Abort Timer OR Answer Back Tone Alternating Current Acknowledgment, positive Abort Call, Retry Automatic Call Unit Address Field Address American Standard Code for Information Interchange (7 level) American Telephone and Telegraph Bit Error Rate Bit-Error-Rate-Test (set) Bilateral Loopback Binary Digit Bits Per Second Binary Synchronous Communications Celsius Circuit Assurance Carri
Abbreviations and Acronyms EOM EON EOT End of Message End of Number End of Text OR End of Transmission EPROM Erasable Programmable Read Only Memory ER Error ESC Escape Key ETB End of Block ETC External Transmit Clock ETX End of Text EXT External F FB FCC Hz I INC IC INV INVCU L LAL LAPD Fallback Federal Communications Commission Form Feed Frame Ground Flag Fixed loss loop Frequency Modulation Test message High Level Data Link Control Hertz (cycles per second) M mA MHz Modem MR ms Incoming Call Indus
Abbreviations and Acronyms PIW PN PND POTS PRI PRO PROG, PROM PSK PSTN PWI Q QAM R RAD RAL RAM RC RCD RCV, RCVR RD RDL RI RL RLO Power Indication Pseudo random Present Next Digit Plain Old Telephone Service Primary Program Option Programmable PR Programmable - Read Only Memory Phase Shift Keying Public Service Telephone Network Power Indication Quadrature Amplitude Modulation Random Access Method Remote Analog Loopback Random Access Memory Receive Clock Receiver-Carrier Detector Receiver Receive Data Rem
Abbreviations and Acronyms X X. XMIT XOFF XON G-4 CCITT Recommendation Designation Transmit Transmitter Off Transmitter On V.
Appendix H Flash Upgrade Update your V.3600 modem easily using this flash upgrade procedure. What You Need • A data communications software package that supports a 57.6 kbps DTE rate and “X modem CRC” protocol • Flash upgrade file Look for modem software upgrades on the Web at this address: http://www.mot.com/MIMS/ISG/Service_Support/software.html Steps For Downloading IMPORTANT: Do not abort this process, once started! 1) Activate your data communications software package, and set up your DTE for 57.
Flash Upgrade 5) From your terminal software package, send the “flash upgrade file” to the modem. You know the download is working because the LCD displays: FLASH UPGRADE IN PROGRESS Note Be sure you use the “X modem CRC” protocol. The modem automatically resets after the upgrade is complete. The process can take several minutes. One of two messages returns. DOWNLOAD OK indicates a successful upgrade. DOWNLOAD ERROR indicates a problem with the download.
Appendix I Country-Specific Parameters Modems are pre-configured for a country or region of operation. These default options vary by country. The tables that follow show, for countries or regions with changes, the default parameter option, the available options, and any other country-specific information. . V.
Flash Upgrade India Command ATS0 ATS6 L ATS10 ATP or ATT AT*TD or ATS51 Default Option Command Name Ring Count to Answer On Blind Dial Call Time-Out DCD Loss Disconnect Dial Type Dial Transmit (Tx) Level 0 4 30 14 0 10 Available Options 0 - 255 4 1 - 60 0 - 255 0, 1 0 - 15 Dial Wait 8 ATS11 DTMF Tone Length 80 50 - 255 AT&G Guard Tone 0 0, 1, 2 ATH1 LAL Busy Out Allowed AT*TL or Leased-Line Transmit 0 0 - 15 ATS52 (Tx) Level ATS8 Pause Delay 4 4 - 12 AT&P Pulse Dial Cycle 0 0, 1 AT\T or Terminal Inact
Flash Upgrade Japan Command ATS0 ATS6 L ATS10 ATP or ATT AT*TD or ATS51 Default Option Command Name Ring Count to Answer On Blind Dial Call Time-Out DCD Loss Disconnect Dial Type Dial Transmit (Tx) Level 0 4 45 14 0 15 Available Options 0 - 255 4 - 255 1 - 110 0 - 255 0, 1 1 - 15 Dial Wait 10 ATS11 DTMF Tone Length 80 50 - 255 AT&G Guard Tone 0 0, 1, 2 ATH1 LAL Busy Out Allowed AT*TL or Leased-Line Transmit 1 1 - 15 ATS52 (Tx) Level ATS8 Pause Delay 2 2 AT&P Pulse Dial Cycle 0 0, 1 AT\T or Terminal In
Flash Upgrade Malaysia Command ATS0 ATS6 ATS7 ATS10 ATP or ATT AT*TD or ATS51 Default Option Command Name Ring Count to Answer On Blind Dial Call Time-Out DCD Loss Disconnect Dial Type Dial Transmit (Tx) Level 0 2 30 14 0 10 Available Options 0 - 255 0 - 255 0 - 255 0 - 255 0, 1 0 - 15 Dial Wait 10 ATS11 DTMF Tone Length 80 50 - 255 AT&G Guard Tone 0 0, 1, 2 ATH1 LAL Busy Out Allowed AT*TL or Leased-Line Transmit 0 0 - 15 ATS52 (Tx) Level ATS8 Pause Delay 2 0 - 255 AT&P Pulse Dial Cycle 0 0, 1 AT\T or
Flash Upgrade Universal/International Command ATS0 ATS6 ATS7 ATS10 ATP or ATT AT*TD or ATS51 Default Option Command Name Ring Count to Answer On Blind Dial Call Time-Out DCD Loss Disconnect Dial Type Dial Transmit (Tx) Level 0 3 60 15 0 9 Available Options 0 - 255 1 - 255 0 - 255 0 - 255 0, 1 0 - 20 Dial Wait 2 ATS11 DTMF Tone Length 72 50 - 255 AT&G Guard Tone 0 0, 1, 2 ATH1 LAL Busy Out Allowed AT*TL or Leased-Line Transmit 0 0 - 20 ATS52 (Tx) Level ATS8 Pause Delay 3 0 - 255 AT&P Pulse Dial Cycle 1
Flash Upgrade U. S. A.
Service and Support Introduction U.S.A. customers who have questions about Motorola Internet and Networking Group products or services should refer to the following sections. Non-U.S.A. customers should contact their local Motorola ING subsidiary office or distributor. Questions About Product Shipment or Technical Assistance Please call the nearest Motorola Internet and Networking Group representative, or Customer Administration at (800) 544-0062.
Motorola Limited Hardware Warranty Two Year Limited Hardware Warranty Motorola, Inc. warrants this product against defects in hardware material and workmanship under normal use for two (2) years from the date of original retail purchase. Motorola, at its option, will, at no charge, either repair the product (with new or reconditioned parts), or replace it (with a new or reconditioned product), or refund the purchase price of the product during the warranty period.
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Index Numerals 2-wire operation 5-34 4-wire operation 5-33 A Analog loopback 10-9 Answer / originate 10-8 Answer mode switching to after dialing 5-15 Answering a call 3-3 ASCII character table F-1 Async DTR dialer DTR async dialer 10-12 Async/sync mode s-register settings 10-12 AT command answer 5-17 AT command set disable 5-33 S-register enable/disabling 10-12 AT command statement 5-3 AT commands $$ 8-11 $C=x, - 8-4 $C=x, y 8-4 $Cn=m 8-9 $D 8-8 $D=x 8-4 $D? 8-4 $DR 8-4 $E=x 8-4 $E? 8-4, 8-10 $EH=pw 8-7 $F
Index (continued) A (Continued) AT commands $W 8-9 $W? 8-9 %A 10-20 %An 6-6 %B 5-28, 10-21 %C 6-11, 10-17 %D 6-4, 10-19 %E 5-30, 10-18 %L 5-29, 10-26 %P 5-42 %R 5-30, 10-16 %T 5-43 %V 5-31 &D 5-20, 10-10 &F 5-39 &G 5-25, 10-11 &L 5-36, 10-12, 10-14 &M 5-25, 10-12, 10-13 &P 5-26, 10-11 &R 5-21, 10-10, 10-23 &S 5-20, 10-10 &T 5-43, 10-11 &V 5-40 &W 5-38 &X 5-27, 10-12 &Y 5-38 &Z 5-40 *CNx,n 5-40 *DA 5-32 *DB 5-36, 10-14 *DG 10-14 *FB 5-22, 10-13 *FT 5-32, 10-12 *IC 5-32 *LA 10-14 *LC 5-32, 10-14 *MM 5-27 *ND
Index (continued) A (Continued) AT commands *TLn 5-36, 10-15, 10-16 +++ 5-22 +FCLASS 9-4 ‘ 10-16 A 5-17, 6-10, 10-19 A/ 5-4 AT 5-3 B 6-11, 10-24 C 6-11, 10-18 categories 5-1 D 5-13 E 5-22, 10-8 F 5-23 G 6-8, 10-16 H 5-23, 10-8 I 5-24 J 6-4, 10-23 K 10-18 Kn 6-9 L 5-24, 10-10 M 5-24, 6-5, 10-10, 10-22 N 6-5, 10-22 O 5-25, 10-18 P 10-8 Q 5-6, 6-7, 10-8 R 5-21, 10-19 response commands 5-5 T 6-10, 10-8, 10-18 V 5-6, 10-8, 10-19 W 5-6 X 6-8, 10-10, 10-16 Y 5-25, 10-10 Z 5-39 Attention code (AT) 5-3 Auto reliable
Index (continued) A (Continued) Auto-reliable fallback character 6-6 Auto-reliable mode 6-2 B BER s-register settings 10-16 Binary File Transfer (BFT) standard 9-10 Block size maximum reliable 6-10 s-register settings controlling size 10-19 Break control 6-9 Buffer disconnect delay 6-4 set auto-reliable 6-11 C Call ending a 3-3 Call termination conditions of 3-4 Caller ID 5-17 Carrier detect level A-3 CCITT 9-1, 9-3 Clock external transmit frequency A-2 internal transmit frequency A-2 s-register settings
Index (continued) C (Continued) CTS follows DCD option s-register settings 10-23 CTS/RTS flow control 10-16 D Data compression 6-2 V.
Index (continued) D (Continued) DTE fallback S-register enable/disable 10-13 DTE flow control s-register settings 10-16 DTE/DCE constant speed s-register settings 10-23 DTR s-register settings 10-10 DTR control Data terminal ready (DTR) control 10-10 DTR dialer s-register settings 10-12 DTR in autoanswer 5-17 E Echo 10-8 local character 5-22 online character 5-23 EIA-578 9-1, 9-3 Environmental conditions A-1 Error control 6-1 Escape sequence Changing from data mode to command mode 5-22 F Factory option se
Index (continued) F (Continued) Flow control, serial port 6-7 France I-4, I-5, I-6 full duplex 5-34 Fuse 12-1 G Ground C-4 Guard tones s-register settings 10-11 H HDLC data framing 9-3 I IC requirements vii Inactivity timer 6-10 Installation 2-1 Internet web pages 1 J Jack DIAL pin functions B-1 TELSET/LEASED LINE pin functions B-1 L LAPM 6-1 LCD menu 4-2 Leased line s-register settings 10-14 Leased lines 2-7 Line current disconnect s-register settings 10-14 Line equalization A-3 Line type s-register s
Index (continued) M Make/break ratio s-register settings 10-11 MNP 6-1, 10-22 MNP compression s-register settings 10-18 MNP or normal mode 6-9 MODEM AND TELEPHONE LINE CHECK D-2 Modem Options command 11-11 Modulation rates A-2 N Normal mode 6-2, 6-10 O Off hook command description 5-23 Offline command mode 5-2 Online command mode 5-2 Operating mode selection 6-5 Operating mode status s-registers settings 10-22 Operation with security local 8-3 Remote 8-2 Option selection methods of 3-1 Option Sets E-23 Op
Index (continued) P (Continued) PRK 11-13 PRO 11-11 Product training information 1 Profile active 5-37 factory 5-37 stored 5-37 profile fax operation 9-3 Protocol compatible with 1-2 Protocol commands 6-3 Protocol response messages s-register settings 10-19 PSTN connection 2-6 R Rate renegotiation 5-31 Reliable mode 6-1 Remote configuration security 5-42 Remote digital loop request s-register settings 10-11 Remote digital loopback 10-9 Remote digital loopback, DTE commanded s-register settings 10-14 Reques
Index (continued) S (Continued) Security factory reset 8-10 levels 8-5 passwords 8-6 remote code 5-42 remote logon procedure 8-12 removing a user 8-10 set levels 8-8 setting passwords 8-8 superuser status 8-11 verify user 8-11 Serial Number 5-32 Serial port DTE adjust 6-4 Serial Port flow control 6-7 Signal options displaying received 5-40 Size A-1 Speaker s-register settings 10-10 Specifications A-1 S-register autoanswer 10-5 hexadecimal/decimal values 10-2 S-register commands Sn.
Index (continued) S (Continued) S-registers S25 10-11 S26 10-11 S27 10-12 S28 10-12 S29 10-12 S3 10-5 S30 10-13 S32 10-14 S34 10-14 S35 10-14 S4 10-5 S44 10-15 S45 10-15 S49 10-15 S5 10-5 S50 10-15 S52 10-15, 10-16 S53 10-16 S54 10-16 S56 10-17 S57 10-17 S58 10-18 S59 10-18 S6 10-5 S60 10-18 S61 10-19 S62 10-19 S63 10-19 S64 10-20 S67 10-20 S69 10-21 S7 10-6 S70 10-22 S71 10-22 S72 10-23 S73 10-23 S74 10-23 S75 10-23 S76 10-24 S77 10-24 S78 10-24 S79 10-24 S8 10-6 S80 10-25 S81 10-26 S88 10-27 V.
Index (continued) S (Continued) S-registers S9 10-6 S91 10-27 Straps ground option C-4 Superuser See Security 8-11 Sync clock selection 10-12 T Technical support 12-2 Teephone line specifications A-1 Telco connection A-3 Telephone line connection 2-6 Telephone Interface D-1 Telephone number storing 5-40 Temperature A-1 Test, system 10-9 Testing A-3 Tests 7-1 Timer inactivity 6-10 Training information 1 Transmit break/set break length 6-11 Transmit level dial line 5-33 leased line 5-36 transmit output level
Index (continued) V (Continued) V.25 VAL s-register settings 10-13 V.32 fast train 5-32 s-register enable/disable 10-12 V.42 optional detect phase 6-5 V.42 bis 6-1 version level 5-24 W Web pages 1 Word length --7/8 bit s-register settings 10-19 X XON/XOFF 6-7, 6-8, 9-4 XON/XOFF characters s-register settings 10-16 XON-XOFF characters from DTE s-register settings 10-15 V.
