V.3229 / V.3229L Installation and Operation Motorola Doc.
Introduction Introduction Chapter 1 Introduction GENERAL The UDS V.3229 and the V.3229L are versatile high speed asynchronous or synchronous modems that allow data transfer between two host computers via the telephone communication system. The modems can operate full-duplex on both dial-up and leased lines. The modems are compatible with all required standards and recommendations, and feature a wide variety of automatic, remote, and backup capabilities. Major characteristics include: ¥14.
Introduction Introduction Functional The V.3229 processes serial asynchronous data from a DTE at all standard rates from 300 bps to 57.6 kbps, and serial synchronous data at rates from 1.2 to 14.4 kbps. Transmission can be over the dial-up telephone network or 2- or 4-wire, point-to-point, dedicated leased lines. The maximum telephone line speed is 14.4 kbps. Built-in test features can determine system performance and isolate faults in the data link.
Introduction Introduction button. The LED is on in talk mode and off in data mode; the pushbutton selects between the two modes (Figure 1-2). V.3229 / V.
Introduction Introduction Both models have six light emitting diodes (LEDS) to show communication status between the modem and data terminating equipment (DTE). Standalone and Shelf Units The standard and L models are available in both standalone or shelf mount configurations. The pc (printed circuit) boards are identical for either so that the standalone board can be field changed for use in the shelf or vice versa. Hardware straps on the pc board offer additional customer options.
Introduction Introduction The standalone rear panel has an EIA-232 DTE connector, an 8-pin (TELSET / LEASED LINE) jack, and an 8-pin (DIAL) jack, the power switch, fuse and power cord (Figure 1-3). Some versions have a 110/220V selection switch. HOW TO USE THIS MANUAL Most of the manual applies to both the standard and the L model. Users of the L model can ignore Chapter 3 and other explanations of LCD and pushbutton operation throughout the manual.
Introduction Introduction within a byte to change an option. Refer to Chapter 6. ¥V.25 bis Commands - An extended set of V.25 commands allows selection of modem options during synchronous operation. Refer to Chapter 7. Quick Startup A quick startup procedure at the beginning of Chapter 4 provides information for quickly getting online. Specifications Appendix A contains modem specifications.
Introduction Installation Chapter 2 Installation GENERAL This chapter provides information for the mechanical and electrical installation of the modem. SITE SELECTION Install the modem within 6 feet of a standard 115 or 230 Vac grounded wall outlet as required for the specific model and no further than 50 feet from the terminal equipment. The installation area should be clean and free from extremes of temperature, humidity, appreciable shock, and vibration.
Introduction Installation Strap Inspection Several hardware straps on the printed circuit board may require changing prior to installation. Refer to Strap Option Selection at the front of Chapter 3 for information. ELECTRICAL INSTALLATION The rear panel (Figure 2-1) houses connectors for the DTE cable and telephone lines. AC Power Connection Power is supplied through a 6-foot line cord with a grounded 3-wire plug.
Introduction Installation DTE CONNECTION The DTE connector is a 25-pin D-series type conforming to EIA-232 specifications. Pin signals are shown in Figure 2-2 and described in Table 2-1. TELEPHONE LINE CONNECTION The modem operates in one of three line-related modes: ¥Permissive (PSTN) ¥Programmable (PSTN) ¥Private line Permissive and programmable modes are used on the Public Switched Telephone Network (PSTN). Private line mode is used on 4-wire or 2-wire dedicated leased lines.
Introduction Installation phones the jack arrangement is RJ11C . Cable PN 61020202-0301 connects the DIAL jack on the back of the modem to the RJ11C wall jack. Programmable -4 V.3229 / V.
Introduction Installation Programmable mode corrects for the signal level loss between the modem and the telephone company central office. This is done by setting the modem transmit output signal level with a resistor selected and installed in the jack by the telephone company. This allows the output signal to reach the central office at the optimum level of -12 dBm. Jack arrangements for this mode are the RJ45S (Programmable) and RJ41S (Universal).
Introduction Installation Table 1: Pi n N o. EIA232D 1 CCI TT V.24 Signal Name 101 Shield Description Protective Ground 2 BA 103 Transmitted Data Serial digital data (to be modulated) 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 negativegoing clock transitions; asynchronous data does not require a transmit clock.
Introduction Installation V.3229 / V.
Introduction Installation Table 2: Pi n N o. EIA232D CCI TT V.24 11 Signal Name 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. 15 DB 114 Transmit Clock (DCE) A transmit data rate clock output for use by the DTE equipment. Negative clock transitions correspond to data transitions.
Introduction Installation Refer to Strap Options. Note: The modem is compatible with exclusion key phone arrangements. Leased Line Connection The modem operates on either 2-wire or 4-wire leased lines. 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. The 42A block is the most common termination for leased line use.
Introduction Installation -10 V.3229 / V.
Introduction Installation V.3229 / V.
3 Option Selection Chapter 3 Option Selection GENERAL Note: This chapter contains the options available by pushbutton in response to the LCD. Users of the L model are encouraged to consult the different sections of this chapter as appropriate for further information on modem operation and option selection. Nine factory option sets provide complete setups for most data communication arrangements. The modem is shipped configured to factory option set #1. Appendix D lists the options for each set.
3 Option Selection The strap diagrams on the following pages indicate the factory settings. -2 V.3229 / V.
3 Option Selection Removing Cover Warning: Disconnect ac power before removing the cover. Although dangerous voltage levels are not exposed, disconnecting power ensures an electrical shock hazard is not present. Place the unit on its side on a flat surface. To disengage the lock prong insert a medium size flat screwdriver blade in one of the bottom rear latch slots. DO NOT PUSH the screwdriver but lightly pry the handle away from the unit as illustrated in Figure 3-1.
3 Option Selection 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. Board Identification -4 V.3229 / V.
3 Option Selection Two different printed circuit boards exist for the V.3229. After removing the cover use Figures 3-2a and 3-2b to identify which board is in your modem and to locate hardware straps. The board represented in Figure 3-2b has a piggyback board. Setting Straps Figure 3-3 shows a typical strap application. HARDWARE STRAPS Strap illustrations in this section match the board with the TR LED. Tip and Ring Polarity Some telephones are tip and ring polarity sensitive.
3 Option Selection QM Normal / Inverted This strap only applies to the board shown in Figure 3-2b. Select normal or inverted QM output. *factory setting LCD OPTION SELECTION Modem options can be checked or changed with the front panel LCD and pushbuttons. Note: Options are also controlled by AT or V.25 bis operating commands discussed in Chapter 5 and 7.
3 Option Selection has a Submenu Item column; if an option setting is selected or if all options have been scrolled through, the menu returns to the Submenu header. If the NO pushbutton is pressed and held, the modem scrolls through the menu. Note: The displays in Main Menu 1 show the current operating mode or status. These displays are not option selections. In most cases, while operating in the option menu, pressing NO scrolls down the columns in Table 3-1 and pressing YES advances across the rows.
3 Option Selection Table 1: ^ ^ PROTOCOL NONE NEGOTIATING V.42 LAPM OR V.42 MNP 2/3/4/5 DISPLAY STATUS --- --- COMPRESSOR * NONE MNP 5 V.
3 Option Selection Table 3-1 Cont. Menu Options Table 2: M A I N SUBMENU + SUBMENU ITEM ITEM OPTION AT COMMAND SRE G M E N U M A I N 5 MODIFY CONFIGURA-TION? CHANGE MODEM OPTIONS? CHANGE DCE RATE DTE SPEED 14400 TRELLIS 12000 TRELLIS 7200 TRELLIS 9600 TRELLIS 9600 UNCODED 4800 UNCODED 2400 V.22 bis 1200 V.22 bis 300 BELL 103 %B %B9 %B8 %B7 %B6 %B5 %B4 %B3 %B2 %B1 S6 9 ^ ^ ^ FORCED ANSWER OR NORMAL ORIGINATE NORM ORIGIN FORCED ANSWER *OR *OR1 S1 4 ^ ^ ^ V.
3 Option Selection Table 2: ^ ^ ^ DIAL BACKUP MANUAL, AUTO ^ ^ ^ LOOKBACK TIMER ^ ^ ^ ^ ^ ^ *DB, *DB1 S3 2 OFF, 15, 30, 45, 60 MIN --- S2 8 LL TRANSMIT LEVEL 0 to -21 dBm *TLn S5 2 CHANGE PROTOCOL OPTIONS? (async only) LAPM PROTOCOL ENABLE \N4, \N5, \N6, \N7 \N, \N1, \N2, \N3 S7 0 ^ MNP PROTOCOL \N2, \N3, \N6, \N7 \N, \N1, \N4, \N5 S7 0 \N3, \N5, \N6, \N7 \N, \N1, \N2, \N4 S7 0 %C %C1 %C2 %C3 S5 6 AT COMMAND SRE G DISABLE ENABLE DISABLE ^ ^ ^ PROTOCOL FALLBACK ENA
3 Option Selection Table 3: ^ ^ ^ INACTIVITY TIMER OFF, 15, 30, 45, 60, 75, 90 MIN --- S5 8 ^ ^ ^ BREAK CONTROL 0, 1, 2, 3, 4, 5 \K, \K1, \K2, \K3, \K4, \K5 S5 9 ^ ^ ^ V.
3 Option Selection Table 3-1 Cont. Menu Options Table 4: M A I N SUBMENU + SUBMENU ITEM ITEM OPTION AT COMMAND SRE G NORMAL FORCED HIGH OFF 5 SEC ON DISCONNECT FOLLOWS REMOTE RTS &C1 &C S2 1 NORMAL FORCED HIGH CTS FOLLOWS DCD CTS=RTS &R &R1 &R2 M E N U M A I N 5 ^ MODIFY CONFIGURA-TION? (cont.) ^ CHANGE DTE OPTIONS? (cont.
3 Option Selection Table 4: ^ ^ ^ DIAL TONE BLIND DIAL WAIT FOR DIAL TONE X, X1, X3 X2, X4 S2 2 ^ ^ ^ WAIT DELAY (Blind Dial) 1, 2, 4, 8, 16, 32 SEC --- S6 ^ ^ ^ PAUSE DELAY 1, 2, 4, 8, 16, 32 SEC --- S8 ^ ^ ^ CALL TIMEOUT 15, 30, 45, 60, 75, 90, 105, 120 SEC --- --- ^ ^ ^ ANSWER RING #X 1, 2, 4, 8, 16, manual --- S0 ^ ^ ^ 801 V.32 TIMEOUT LONG, SHORT --- S5 3 ^ ^ ^ AUTOCALLBACK ENABLE, DIS --- S7 2 V.3229 / V.
3 Option Selection Table 3-1 Cont. Menu Options Table 5: M A I N + SUBMENU SUBMENU ITEM ITEM OPTION AT COMMAND SRE G L1 L2 L3 S2 2 M E N U M A I N 5 MODIFY CONFIGURA-TION? (cont.
3 Option Selection main menus 2 through 6. To return to main menu 1 press the TALK/DATA pushbutton. NO DIAL STORED PHONE #? NO DISPLAY STATUS NO . . . CHANGE PHONE #? Note: While operating in the option menu, pressing NO scrolls down the columns in Table 3-1 and pressing YES advances across the columns. Main Menu When any Main Menu is on display, pressing YES advances to the first Submenu in that Main Menu group. MODIFY CONFIGURATION? YES CHANGE MODEM OPTIONS? V.3229 / V.
3 Option Selection Submenu When in a Submenu column, pressing NO scrolls down the Submenus; when the end is reached it returns to the Main Menu for that group of submenus. CHANGE MODEM OPTIONS? NO . . . LOAD/STORE OPTION SET? NO MODIFY CONFIGURATION In a Submenu column, pressing YES advances to the Submenu Item column. CHANGE MODEM OPTIONS? YES DCE RATE Submenu Item To scroll through the Submenu Item column, press NO. At the end, pressing NO returns you to the Submenu header for that item group.
3 Option Selection RATE NO ORIG/FORCE ANSWER NO . . . V.22 GUARD TONE DISABLED* NO CHANGE MODEM OPTIONS? When in a Submenu Items column, pressing YES advances through the options for that Submenu Item. The first option that appears is the currently selected option. NORMAL ORIG. FORCED ANSWER? YES FORCE ANSWER NORMAL ORIG.? * This is the last submenu item for modem options.
3 Option Selection USE RECEIVE TRANSMIT CLOCK? NO USE EXTERNAL TRANSMIT CLOCK? NO USE INTERNAL TRANSMIT CLOCK? YES INTERNAL CLOCK CHANGE? Selecting the Option Select the submenu containing the option (submenu item) to be changed and press YES. The LCD displays the first Submenu Item. If the Submenu Item (option) setting displayed is the desired option, press NO to scroll through Submenu Items.
3 Option Selection V.3229 / V.
Operation Chapter 4 Operation GENERAL This chapter contains a functional description of the modem. CONTROLS AND INDICATORS The front panel houses the LCD panel and LED indicators. The power switch is located on the rear panel. LED DESCRIPTIONS The LEDs display modem status during various operations. Two versions of the V.3229 contain two different LEDs. One version has a TR LED in the location where the other version has a QM LED.
Operation on EIA-232 pin 11. Request to Send RS - lights when the DTE is ready to send data to the modem. This signal is input on EIA-232 pin 4. Clear to Send CS - lights when the modem is ready to accept data from the DTE. This signal is output on EIA-232 pin 5. Carrier Detect -2 V.3229 / V.
Operation CD - lights when the received audio carrier signal is detected or, if enabled, when error control negotiation is complete. This signal is output on EIA-232 pin 8. Received Data RD - lights for a space at the receive data output, indicating receive output data activity. This signal is output on EIA-232 pin 3. Transmit Data TD - lights for a space at the transmit data input, indicating transmit input data activity. This signal is input on EIA-232 pin 2.
Operation ¥Turn on the computer and the modem. Manual Dialing After turning the modem on the LCD shows the software version and advances to main menu 1. ¥Pick up the handset and dial the phone number of the remote modem. For the L model press the TALK / DATA button to enter talk mode. ¥When a remote modem answers a high pitched tone (2100 Hz answer back tone) is heard. ¥Press TALK/DATA. This puts the modem in data mode and data transfer can begin.
Operation ¥Press YES. The modem proceeds through the dial sequence. To follow this sequence, observe the LCD and listen to the speaker. AT Command Dialing Enter ATD and the telephone number or memory location number to dial. When the enter key is pressed the dial sequence starts. Follow the status of the dial sequence by observing the monitor screen and listening to the speaker. . Software Packages Communication V.3229 / V.
Operation A large variety of software packages compatible with the modem is available. Most provide a way for the operator to select options, insert phone numbers, and establish communications with a remote modem. Software package instructions describe the actions required for these functions. ERROR CONTROL The modem incorporates error control capabilities including LAPM and MNP protocols. Chapter 8 provides detailed explanations for error control.
Operation Note: For a 2- or 4-wire leased line connection to succeed one modem must be configured as forced answer and the other modem as normal originate. Both modems should have only one protocol, MNP or LAPM, enabled and PROTOCOL FALLBACK must be disabled. DCE line speed must be the same for both modems. 4-Wire Operation In 4-wire operation, the modem is a full-duplex, leased line modem requiring a dedicated 4-wire leased line. Only point-to-point dedicated leased lines are supported. A V.
Operation leased line the modems connect and begin communicating with each other. Note: DTR must be held high in 2-wire leased line operation. This is accomplished by DTE control, wiring pin 20 of the digital interface cable high, or by selecting the option IGNORES DTR. If DTR is terminal controlled, loss of synchronization can be corrected by cycling DTR. This causes the modem to initiate the 2-wire training sequence. -8 V.3229 / V.
Operation 2-WIRE DIAL-UP OPERATION Connection to the telephone network is through the DIAL jack. A standard telephone can be connected to the TELSET/LEASED LINE jack for manual dialing. 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. These three code storage locations are called profiles.
Operation ferred to the active profile and then modified to fit a specific application if needed. -10 V.3229 / V.
Operation REMOTE CONFIGURATION This mode of operation allows viewing or modifying the options of a remote modem that supports Motorola UDS remote configuration. Remote configuration is initiated by the local (master) modem through a routine incorporating remote digital loopback, a security code, and an acknowledgment from the remote (slave) unit to be modified. The security code is user programmable and provides protection from unauthorized entry.
Operation DTE service can again be returned to the remote modem by issuing the ATO command. Switching DTE service between local and remote modems may be performed as needed. To exit remote configuration, return DTE service to the local modem. The AT&T command will exit remote configuration mode. -12 V.3229 / V.
Operation Remote configuration may be entered after dialing by placing the remote configuration command (%T=), without the = sign and followed by the security code, at the end of the dial string. SECURITY OPERATION Security operation provides password protection against unauthorized dial-up access. The security feature can be enabled / disabled with AT commands when operating on a dial-up system.
Operation security code before the secure modem will allow data transfer. If accessing a secure remote modem, the local modem prompts the user with PLEASE ENTER YOU PASSWORD ⇒ To Respond to the password prompt Enter $ followed by the password. -14 V.3229 / V.
Operation 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.
Operation SECURE 14400 xxx -16 V.3229 / V.
Operation Restrictions in Security Operation The following conditions will cause the modem to disconnect: ¥An error control protocol is not in effect ¥Illegal password attempt ¥Connection is 300 bps ¥Connection is synchronous These restrictions apply only when security is enabled.
Operation ¥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 Note: In 4-wire leased line operation, if both units have autodial backup enabled, one must be configured for forced answer. This prevents both units from dialing if the leased line fails. Both methods use the prestored autodial number.
Operation mode terminates when the modem performs leased line lookback. AUTO RATE RENEGOTIATION Auto rate renegotiation allows the modem to automatically decrease the DCE rate when the allowable bit error rate is exceeded. If line condition improves the modem automatically increases the rate. Select this feature by front panel operation or AT command. Options include disabled (factory default), low (BER= 1 in 10^5), medium (BER= 1 in 10^4), high (BER= 1 in 10^3).
Operation Using a Standard Telephone ¥Lift the telephone receiver. Wait for the dial tone. With the L model enable talk mode by pressing the TALK / DATA button. ¥Dial the number of the remote site. ¥When the answer back tone is heard, immediately press the TALK/DATA button and hang up the phone. The modems go through a connection sequence and establish a data link. If not, hang up and return to the first step. -20 V.3229 / V.
Operation Autodial from Front Panel ¥Advance the LCD to main #2, DIAL STORED NUMBER. ¥Select the stored number to dial and press YES to dial. Autodial with the AT Command Set ¥To dial a number, for example 5551212 type AT D 555-1212 carriage return, or enter ATD Sn where n equals the stored telephone number location (1-9) to dial. ¥The modem dials the number -- either pulse or tone, whichever is currently in effect -- and takes the role of the originate modem.
Operation RINGING Press TALK/DATA to answer the call or enter the ATA command at the DTE. ENDING A CALL The following conditions cause call termination: ¥Abort Disconnect (No answer, busy signal, no modem, etc.) Default 30 sec. Select 1 to 30 sec. ¥ATH Disconnect command. ¥Loss of Carrier Disconnect Select 100 ms to 25.5 sec. ¥Receive Long Space Disconnect Disable or enable. ¥DTR Disconnect Disable or select 10 ms to 2.55 sec.
Operation TO DISCONNECT? When YES is pressed the modem hangs up. Pressing NO displays SWITCH TO TELSET (TALK MODE)? Pressing YES turns the connection over to the connected telephone. ¥Protocol Link Establishment Failure Reliable mode only. Failure to establish reliable link. ¥Protocol Inactivity Timeout Default (0) disabled. Select disable or 1 to 255 minutes. ¥Protocol Retry Limit Exceeded 12 retransmissions of the frame.
Operation -24 V.3229 / V.
Operation V.32 Cleardown V.3229 / V.
Operation V.32 cleardown is a method of call termination specified in the CCITT recommendation. Cleardown incorporates a training sequence which ends with a command to disconnect. If long space disconnect is disabled, the cleardown sequence is activated by the ATH command or by any method of disconnect request. -26 V.3229 / V.
Operation V.3229 / V.
5 Asynchronous Operating Commands Chapter 5 Asynchronous Operating Commands GENERAL This chapter describes the AT commands used to select options and to operate and test the modem.
5 Asynchronous Operating Commands 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 data communication link remains established but data transmission is suspended. The modem will now accept commands like it does in the offline command mode.
5 Asynchronous Operating Commands To create a command statement use the following steps: ¥Type AT. This is the Attention Code telling the unit a command statement follows. ¥Type the command. ¥Press the return key to "Enter" or send the command statement to the modem. An example of a command statement using the dial command (D) follows. ATD555-1212 This statement can be read as: Attention: Dial 555-1212. Another example is: Enter ATZ. This means Attention: execute the Z command.
5 Asynchronous Operating Commands Guidelines for Creating Command Statements When typing command statements, note the following: ¥The attention code (AT) may be upper or lower case but not a combination like aT. ¥Return must be pressed to execute (Enter) a command. ¥The command buffer can hold 40 characters. ¥Use the backspace or delete key to erase the last character. Even though the initial AT code must be all upper or lower case, characters that follow can be any mix of upper and lower case.
5 Asynchronous Operating Commands 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 Local Character Echo in the General Commands section of this chapter for details. Command Buffer The modem temporarily stores up to 40 characters in the command buffer. If this limit is exceeded, the modem does not accept the command and sends an ERROR message.
5 Asynchronous Operating Commands This command tells the modem to repeat the last command stored in its buffer. It automatically reexecutes the command without retyping. The return key does not need to be pressed. -6 V.3229 / V.
5 Asynchronous Operating Commands Response Commands, Cont. Example: The ATD5551212 command has been executed, and the phone is busy. To repeat the instruction type A/ , but do not use AT before this command as AT would empty the buffer and there would be no command to repeat. Numbered Commands Series of commands that start with the same letter are distinguished by a number following the letter.
5 Asynchronous Operating Commands Response Commands, Cont. The modem executes the AT command followed by the Q, V, L, D, and T commands. ATQ0V0L3DT5551212 can be read as ATQVL3DT5551212. Eliminating zeros reduces the number of characters, allowing more room in the buffer. -8 V.3229 / V.
5 Asynchronous Operating Commands Response Commands, Cont. The dial D command initiates the dial process so no other commands, only dial modifiers, can follow it. RESPONSE COMMANDS The modem communicates with the operator through response messages. These appear on the monitor or a computer printout to show the result of the command or action executed. Response messages can appear as words or numbers. Digit / Word Selection V V tells the modem which type of response message to show on the monitor.
5 Asynchronous Operating Commands Response Commands, Cont. Table 2: Q Response display on * Q1 Response display off Q2 Response display on in originate mode only *default -10 V.3229 / V.
5 Asynchronous Operating Commands Response Commands, Cont. Response messages may be sent to the DTE at the DTE rate or the current DCE rate. Refer to S39 in Chapter 6 for further information. Call Progress and Connect Speed Displays X The X command selects connect / message displays and dialing options such as call progress monitoring, busy signal or dial tone detection and blind dialing.
5 Asynchronous Operating Commands X1 followed by a dial command causes the modem to go off hook, wait the amount of time set in register S6, and dial the number. If connection is made the modem returns an appropriate CONNECT message or code to the screen. The modem will not detect a busy or dial tone signal. X2 followed by a dial command causes the modem to go off hook and wait for a dial tone before dialing.
5 Asynchronous Operating Commands Dial Commands, Number Code Cont. Application *RC Some communications software packages use different number codes to indicate the data rate of the serial port. This option selects either of two commonly used number code sets. Table 4: Command *RC ^ *RC1 ^ Code Set Number Operation Standard 15 4800 bps ^ 18 9600 bps Alternate 11 4800 bps ^ 12 9600 bps default is *RC Note: Asterisks in AT commands are part of the command and do not indicate footnotes.
5 Asynchronous Operating Commands Dial Commands, Cont. Response number codes, messages, and their corresponding meanings are listed in Table 5-1. CONNECT messages may be selected for output to the DTE at the DTE or DCE rate. If register S39 bit 5 is set to 0, the CONNECT message is sent at the DTE rate; if 1, the message is sent at the DCE rate.
5 Asynchronous Operating Commands Dial Commands, Cont. Table 5: 22 CONNECT 1200/REL MNP 1200 bps connection 23 CONNECT 2400/REL MNP 2400 bps connection 24 CONNECT 4800/REL MNP 4800 bps connection 25 CONNECT 9600/REL MNP 9600 bps connection 26 CONNECT 19200/ REL MNP 19200 bps connection Table 5-1, Cont.
5 Asynchronous Operating Commands Table 6: 44 CONNECT 7200/ LAPM LAPM 7200 bps connection 45 CONNECT 57600/ LAPM LAPM 57600 bps connection Note: Connect rates indicate DTE speed. -16 V.3229 / V.
5 Asynchronous Operating Commands DIAL COMMANDS Dial commands let the modem originate a call to another modem. These commands can be used with either tone or pulse dial telephone systems. Commands for call answering are included at the end of this section. Dialing D To Dial a number, for example 555-1212 Enter AT D 555-1212 The modem dials the number, either pulse or tone, whichever is currently in effect, and takes the role of the originate modem.
5 Asynchronous Operating Commands Terminal Interface Commands, Cont. T Tone dialing* P Pulse dialing , Insert a long pause (2 sec or value in S8) W Wait for 2nd dial tone ! Flash (1/2 sec) R Switch to answer mode after dialing T insert a T in the dial command. AT D T 3231111P insert a P in the dial command AT D P 5559902, use a comma. This inserts a 2 second delay (or the value in register S8).
5 Asynchronous Operating Commands Terminal Interface Commands, Cont. Switching to Answer Mode after Dialing R Table 7: use an R at the end of the dial sequence. AT D 5552345 R; place a semicolon at the end of the dial string. AT D 2345678 ;@ use the @ command. AT D 3994700 @ 2251 ; after the connection waits for 5 seconds. The modem then sends service code 2251 and returns to command mode for further input.
5 Asynchronous Operating Commands Terminal Interface Commands, Cont. Table 7: select &C. DIMENSION(IN) COLWIDTHS(1. 0000,2.710 8) WIDTH(5.4992) BELOW(.0005) HGUTTER(.0555) VGUTTER(.0555) BOX(Z_DOUBLE) HGRID(Z_S INGLE) VGRID(Z_SINGLE) KEEP(OFF) ALIGN(RT) L2(R1C0..
5 Asynchronous Operating Commands Table 8: Command Operation &S DSR always on* &S1 DSR on when off hook in data mode &S2 DSR off for 5 seconds after disconnect then returns to on &S3 DSR follows off hook (OH) signal *default V.3229 / V.
5 Asynchronous Operating Commands Test Commands, Cont. Data Terminal Ready &D In data mode DTR may be used for modem control. Table 9: Command Operation &D The modem ignores DTR.* &D1 The modem goes to command mode from data mode when DTR goes from on to off.
5 Asynchronous Operating Commands Table 10: Command Operation \R Causes ring indicate signal on pin 22 to turn on (high) during each ring and remain on during the call \R1 Causes ring indicate signal on pin 22 to turn on (high) during each ring and turn off (low) when the call is answered* *default Request to Send / Clear to Send &R When the modem is operating in nonbuffered mode (direct mode) or in synchronous mode, AT&R enables the RTS to CTS delay determined by the value in S26.
5 Asynchronous Operating Commands General Commands, Cont. Note: With AT&R2 selected, XON/XOFF is the only valid method of flow control and &C and &C1 are the only valid carrier detect options. -24 V.3229 / V.
5 Asynchronous Operating Commands General Commands, Cont. DTE Controlled Fallback Rate (Pin 23) *FB Pin 23 of the EIA-232 DTE connector provides a 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.
5 Asynchronous Operating Commands General Commands, Cont. TEST COMMANDS &T Diagnostic tests are used to isolate faults in the communications path. Diagnostic tests will 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 AT&T command. When in test modes without test pattern, issue the escape sequence +++ to return to command mode before terminating the test with the AT&T command.
5 Asynchronous Operating Commands *default General Commands, Cont. Note: Local analog loopback with or without test pattern is the only test available in error control mode. Bilateral Test Enable / Disable *AN *DG Enable or disable bilateral test functions.
5 Asynchronous Operating Commands General Commands, Cont. Table 15: Command Operation *RD Ignore pin 21* *RD1 RDL enabled (pin 21) *default DTE Controlled Local Analog Loopback (Pin 18) *LA To enable DTE controlled local analog loopback test, enter AT*LA1. Enabled, the modem goes into local analog loopback when it detects an off-to-on transition of pin 18. Test ends when it detects an on-to-off transition of pin 18. To disable, enter AT*LA.
5 Asynchronous Operating Commands General Commands, Cont. To exit data mode and go to online command mode, press the escape character three times (+ is the default). Pause for the length of time set by register S12 (1 second is the default) before and after the +++ to ensure the modem recognizes the escape command. This sequence temporarily suspends data transmissions and allows command mode operations without disturbing the telephone line connection.
5 Asynchronous Operating Commands General Commands, Cont. Online State Character Echo F In some lower speed modems the ATF 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 To end a call, enter ATH. This tells the modem to disconnect and go on hook. The modem must be in online command mode to use this command.
5 Asynchronous Operating Commands General Commands, Cont. L ATL commands offer three volume levels. Table 19: Command L, L1 Operation Speaker volume low L2 Speaker volume medium* L3 Speaker volume high *default V.3229 / V.
5 Asynchronous Operating Commands General Commands, Cont. Speaker Control M ATM commands enable or disable the speaker for monitoring purposes. Table 20: Command Operation M Disables the speaker M1 Disables the speaker while receiving a carrier signal* M2 Speaker always on M3 Disables the speaker while dialing and after a carrier is detected *default Return Online O Use the O command when operating in the online command mode and need to return to data mode.
5 Asynchronous Operating Commands General Commands, Cont. condition from a remote modem. If break sequences of 1.6 or more seconds are to be sent, enter ATY to disable this feature and prevent unintentional disconnects. Note: This option must be disabled if SDLC NRZI data is used. Table 21: Y Long space disconnect off Y1 Long space disconnect on* *default Guard Tones &G Guard tones are not used in the United States. If required where operating the unit, select the appropriate guard tone.
5 Asynchronous Operating Commands &L selects line operation as required. Table 23: Command Operation &L Dial (switched)* &L1 Leased (private) 2-wire &L2 Leased (private) 4-wire *default Asynchronous / Synchronous Mode Selection &M The AT&M commands select synchronous or asynchronous operation and synchronous dial method. AT&M selects asynchronous data and dial mode. AT&M1 selects synchronous data mode 1. Calls are placed asynchronously.
5 Asynchronous Operating Commands Configuration Commands, Cont. AT&M2 selects synchronous data mode 2. The modem automatically dials a stored number when it detects a DTR off-to-on transition. The appropriate DTR option must be selected. AT&M3 selects synchronous data mode 3. Calls are placed manually. AT&M4 selects synchronous data mode 4 with V.25 bis autodialer set for Bisync protocol. AT&M5 selects synchronous data mode 5 with V.25 bis autodialer set for SDLC protocol.
5 Asynchronous Operating Commands Configuration Commands, Cont. Make / Break Dial Pulse Ratio &P Using AT&P, the dial pulse is on for 39% and off for 61% of one cycle. Using AT&P1, the dial pulse is on for 33% and off for 67% of one cycle. Table 25: Command Operation &P 39% : 61% US and Canada* &P1 33% : 67% *default Synchronous Transmit Clock Source &X The AT&X commands select internal, external, or receive clock as the transmit clock source.
5 Asynchronous Operating Commands Configuration Commands, Cont.sets the originating DCE speed to follow the AT%B 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. To allow the modem to transmit data at a speed different from DTE speed, enter AT%Bn (n=1 to 9). V.3229 / V.
5 Asynchronous Operating Commands Configuration Commands, Cont. Table 27: Command Operation &B Use DTE speed &B1 300 bps &B2 1200 bps &B3 2400 bps &B4 4800 bps &B5 9600 bps &B6 9600 trellis &B7 7200 trellis &B8 12000 trellis &B9 14400 trellis* *default Disconnect Buffer Delay %D Sets a delay during which the modem processes data in its transmit and receive buffers before disconnecting.
5 Asynchronous Operating Commands Configuration Auto RetrainCommands, Cont. %E This option allows the modem to automatically retrain in response to poor received signal quality without redialing. The modem always responds to a retrain request from the remote modem.
5 Asynchronous Operating Commands Product Revision Level %V %V displays the product revision level. Product Serial Number $V $V displays the product serial number. Permissive / Programmable %Z For dial-up operation the modem transmitter output can be set in two different modes of operation. In permissive (RJ11 jack), transmit output level is set to -10 dBm. In programmable (RJ45 jack) operation, the transmit level is set by an external program resistor.
5 Asynchronous Operating Commands *DB determines whether the dial backup mode is manual or automatic. Table 32: Command Operation *DB Manual dial backup operation* *DB1 Automatic dial backup operation *default V.32 Fast Train *FT The V.32 fast train option is used to reduce training time when operating over high quality, limited distance dial or 2-wire leased lines.
5 Asynchronous Operating Commands Protocol Commands, Cont. Line Current Disconnect *LC Dial line operation only. The modem can be configured to disconnect upon loss or interruption of telephone line current. Table 34: Command Operation *LC Line current disconnect off *LC1 Line current disconnect short (8 ms) *LC2 Line current disconnect long (90 ms)* *default Manual Dial Backup *LD Leased line operation only.
5 Asynchronous Operating Commands Protocol Commands, Cont. Table 35: Command Operation *NT Disable AT command set *NT1 Enable AT command set at remote site* *default To enable AT commands locally, scroll through the LCD menu to the CHANGE DTE OPTIONS? submenu. Scroll to AT COMMAND SET ENABLE / DISABLE. V.3229 / V.
5 Asynchronous Operating Commands Protocol Commands, Cont. On L models, press the TALK/DATA button for 5 seconds. The TD LED flashes indicating that the AT command set has been enabled. Answer / Originate *OR *OR forces the modem to answer or originate mode. This option is used during 2- and 4-wire leased line operation with error correction and / or dial backup.
5 Asynchronous Operating Commands Protocol Commands, Cont. Table 38: *TDn Sets dial line TX level to n where n is a number 9 to 21 corresponding to a TX level of -9 to -21 dBm default is -10 dBm V.3229 / V.
5 Asynchronous Operating Commands Protocol Commands, Cont. 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 at the end of this section. Storing a Configuration &W The &W commands store the current configuration options in one of two nonvolatile memory locations (Figure 5-1).
5 Asynchronous Operating Commands Protocol Commands, Cont. AutoConfigure Commands The AutoConfigure feature is controlled by either the &F, &Y, or Z command. AutoConfigure loads an entire preselected group of options with a single command. Powerup Option Set &Y The &Y command determines which user option set is loaded during powerup and reset.
5 Asynchronous Operating Commands Protocol Commands, Cont. Table 41: &F2 Load factory option 2 (async dial-up without V.42 bis) &F3 Load factory option 3 (sync dial-up without V.42 bis) &F4 Load factory option 4 (sync 4-wire leased line without V.42 bis) &F5 Load factory option 5 (async 4-wire leased line with V.42 bis) &F6 Load factory option 6 (async 4-wire leased line without V.
5 Asynchronous Operating Commands &V allows the user to view the current configuration Protocol Commands, Cont. profile in the form of S-register values. &V1 displays the received signal parameters or characteristics. Table 43: Command Operation &V Displays configuration profiles &V1 Display received signal characteristics Storing a Telephone Command Line &Z *CN, x *ND Nine stored phone number locations of up to 31 characters each are available in nonvolatile memory.
5 Asynchronous Operating Commands Protocol Commands, Cont. followed by the desired command sequence of digits and modifiers. AT&Z 555-1212 In this example the command sequence to dial the indicated number is stored at location 1 for later dialing. Note: Neither the AT prefix nor the D command should follow the &Z. AT&Zn - Stores telephone number n, including dial modifiers, at location 1 (up to 31 digits). AT*CNx,n - Stores telephone number n, including dial modifiers, at location x (x=1 to 9).
5 Asynchronous Operating Commands AT*ND - Displays the stored numbers (1-9). Protocol Commands, Cont. 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.
5 Asynchronous Operating Commands mote configuration mode. This code is separate from DTE security passwords, which are discussed under Security in the next section. The security code is user programmable and can be set to any value from a single 0 to any combination up to 99999999 using the AT%P= command. Example: If the remote modem security code is 12345, then the local modem must include this code in the initialization string before the remote modem responds.
5 Asynchronous Operating Commands code < blank >. This allows initiate remote configuration by using < blank > as the security code. Table 46: Command Operation %T= This command followed by the correct security code establishes remote configuration &T Exits remote configuration V.3229 / V.
5 Asynchronous Operating Commands SECURITY COMMANDS The following AT commands operate security. Refer to Chapter 4 for information on operating with security. Set Password $S=x Entering AT$S=x sets an empty password location to x. This command only applies when no password or only one is stored in memory. It can not be used to change a password. Changing a Password $C=x, y AT$C=x, y changes either password where x represents the old password and y is the new one.
5 Asynchronous Operating Commands $D=x AT$D=x disables security where x is either password. Security Status $D? $E? AT$D? or AT$E? displays the current status of security (on or off). Enabling Security $E=x AT$E=x word. enables security where x is either pass- V.3229 / V.
5 Asynchronous Operating Commands x and y indicate passwords PROTOCOL COMMANDS These commands enable or control the various data compression, flow control, and error correction options of the modem. Table 5-3 illustrates mode and condition availabilities.
5 Asynchronous Operating Commands 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. Table 48: Command Operation \J Disable slaved DTE/DCE (constant speed DTE on)* \J1 Enable slaved DTE/DCE (constant speed DTE off) *default V.42 Optional Detection Phase \M This is a data sequence that speeds up the LAPM link negotiation time if V.42 LAPM is supported by the remote modem. Table 49: Command Operation \M Disable V.
5 Asynchronous Operating Commands reliable modes allow protocol fallback. Refer to Chapter 8 for descriptions.
5 Asynchronous Operating Commands The default of 0 disables auto-reliable fallback character. Table 51: Command Operation %A Sets ASCII character to be recognized as the auto-reliable fallback character Note: The modem must be set for auto-reliable mode (AT\N3, \N5, \N7). Protocol Result Codes \V Enable or disable protocol result codes. Table 5-1 lists these. Table 52: Command Operation \V Disable protocol result codes* \V1 Enable protocol result codes *default V.3229 / V.
5 Asynchronous Operating Commands Serial Port Flow Control \Q \Q Sets 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 DTE.
5 Asynchronous Operating Commands Table 53: \Q Disable DTE flow control \Q1 Enable DTE XON/XOFF flow control* \Q2 Enable CTS flow control to the DTE \Q3 Enable bilateral CTS/RTS flow control \Q4 Disable DCE flow control \Q5 Enable DCE XON/XOFF flow control* \Q6 Enable CTS flow control to the DTE \Q7 Enable CTS flow control to the DTE *default 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 relia
5 Asynchronous Operating Commands -62 V.3229 / V.
5 Asynchronous Operating Commands Table 54: Command Operation \X Process but do not pass XON/XOFF characters to remote DCE* \X1 Process and pass XON/XOFF characters to remote DCE *default Data Link Flow Control \G Enables or disables flow control used to pace data sent from the remote modem to the local modem during a normal connection. When AT\G1 is set, the modem uses XON/XOFF to start / stop data transmission from the remote modem. This command is ignored during a reliable connection.
5 Asynchronous Operating Commands Table 56: 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* *default -64 V.3229 / V.
5 Asynchronous Operating Commands Conditions under which breaks may occur are explained below with descriptions of the modem's response under the different \K command break options. A break is sent to the serial port while the modem is in connect state during a reliable or normal connection.
5 Asynchronous Operating Commands A break is received from the remote modem while the modem is in connect state during a normal connection. Table 59: Command Operation \K, \K1 Empty the data buffers and send break to the serial port \K2, \K3 Immediately send break to the serial port \K4, \K5 Send a break to the serial port in sequence with any data received from remote modem A transmit break command is issued while the modem is in command state during a reliable or normal connection.
5 Asynchronous Operating Commands during a reliable connection. Table 61: Command Operation \T Disable inactivity timer* \Tn Set inactivity to n (n-1-90) minutes *default Maximum Reliable Block Size \A \A sets the maximum transmit block size for reliable connections. Use this command to force the modem to transmit smaller blocks when in a reliable link connection. A smaller block size will maximize throughput when marginal line conditions are causing errors.
5 Asynchronous Operating Commands AT\B commands the local modem to send a break signal to the remote modem. In all modes except direct, S-register 79 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 AT\Bn where n=1-255 in 20 ms increments. Table 63: Command Operation \B Sends a break signal to the remote modem. (Does not modify S79) \Bn Sets S79 to length of break desired.
5 Asynchronous Operating Commands Determines application of data compression while running LAPM protocol. Refer to 8 for explanation.
5 Asynchronous Operating Commands Switch from Normal to MNP \Y Entering \Y causes the modem to return online and attempt an MNP link while connected in normal or direct mode. The modem will initiate / accept a link based on which mode, originate / answer, it was in for the call. The remote modem must switch to MNP mode for this command to succeed. The modem will return to a normal connection if an MNP link is not established in 18 seconds.
5 Asynchronous Operating Commands V.3229 / V.
5 Asynchronous Operating Commands -72 V.3229 / V.
6 Status Registers Chapter 6 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. The information stored in the S-registers is changed by the AT or V.25b command sets and by pushbuttons in response to the LCD prompt. These are the preferred methods.
6 Status Registers Certain S-registers cannot be altered by the ATS command series. These are called "read only" Sregisters. Appendix D contains a listing of S-registers and indicates if they are read only or read and write. Figure 6-1 illustrates how the different inputs to an S-register (S22 in this case) 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.
6 Status Registers Bit values for S-registers must not be confused with the total register value. Bit values are counted separately for each option group, called bit mapping, while the register value is the cumulative decimal or hexadecimal total. The decimal value counts all eight bits as a single group. Hexadecimal values split the bits into two groups of four each. Writing to an S-register changes the total value.
6 Status Registers S-REGISTER OPERATION 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. Changing Register Values Sn=v Sn=^v To change an option using ATS commands requires the operator to precalculate the revised decimal (or hexadecimal) total.
6 Status Registers 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 Most 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.
6 Status Registers AT&L1 selects leased line operation (sets S27 bit 2 to 1) Individual bit method: ATS27.2=0 selects dial-up operation (sets S27 bit 2 to 0) ATS27.2=1 S27 bit 2 to 1) selects leased line operation (sets Note: This way of selecting options can be used on all S-registers except read only registers. Autoanswer S0=0-255 This register turns the 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.
6 Status Registers To disable the escape command, set S2 to any value greater than 127. End-of-Line Character S3=0-127 The standard end of line character is the carriage return (ASCII value of 13). This character ends each command as it is sent to the modem. It is also sent by the modem after each status message or number code. To change the character, set S3 to the desired ASCII value (0-127). Line Feed Character S4=0-127 The standard character is the line feed (ASCII value of 10).
6 Status Registers The default value is 2 (seconds). Pause for Ringback and Carrier Detection / Wait for 2nd Dial Tone S7=1-255 If no ringback is 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 no carrier is 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.
6 Status Registers Lost Carrier Detect Time S10=0-255 S10 contains the amount of time (0-255) in 0.1 second increments carrier must be absent to be recognized as a loss of carrier. The default value is 14 (1.4 seconds). DTMF Tone Duration S11 S11 determines the length of DTMF tones. The period of silence is equal to the duration of the tone. The value of this register must be entered in multiples of 10. Default value is 80 (80 ms).
6 Status Registers greater than 127 instead of changing S12. Values between 0 and 255 may be used for S12. Note: When S-registers have parallel AT commands, the commands are listed in the register tables as a cross reference. If no command exists for the option the column is left blank. S13 Not used -10 V.3229 / V.
6 Status Registers Bit Mapped S14 Table 1: 0 --- --- Reserved 1 0 *1 E E1 Local character echo off Local character echo on 2 *0 1 Q Q1 Response messages on Response messages off 3 0 *1 V V1 Response messages as digit codes Response messages as words 4 *0 1 Q2 Ignore Response messages in originate mode only 5 *0 1 T P Tone dial Pulse dial 6 --- --- Reserved 7 0 *1 *OR1 *OR Forced answer Normal originate * default Note: Registers that contain more than one option are called
6 Status Registers Reserved System Tests S16 This register contains the status of system test options. For reference only.
6 Status Registers value is 0. S19, 20 V.3229 / V.
6 Status Registers Not used Bit Mapped S21 Table 3: 6, 0 *00 10 01 11 &S &S1 &S2 &S3 DSR always on DSR on when off hook in data mode 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 or buffered mode 2 0 *1 &R &R1 CTS follows RTS by S26 delay CTS always on 4, 3 *00 01 &D &D1 10 &D2 11 &D3 DTR ignored D
6 Status Registers Bit Mapped S22 Table 4: 1, 0 00 01 *10 11 L L1 L2 L3 Speaker volume low Speaker volume low Speaker volume medium Speaker volume high 3, 2 00 *01 10 11 M M1 M2 M3 Speaker off Speaker on until carrier detect Speaker always on Speaker off when modem is dialing 6-4 000 X 001 X1 010 X2 011 X3 *100 X4 *0 1 &P &P1 7 CONNECT message only, blind dials, no busy detect CONNECT / appropriate code for rate, blind dials, no busy detect CONNECT / appropriate code for rate, waits
6 Status Registers Table 5: 7, 6 *00 01 10 &G &G1 &G2 No guard tones 550 Hz guard tone 1800 Hz guard tone * default S24 -16 V.3229 / V.
6 Status Registers Not used DTR State Recognition S25 The S25 register specifies the amount of time (0-255) in 0.01 second (10 ms) increments that DTR must stay high or low in order to be recognized as such. The default value is 5 (0.05 second). RTS/CTS Delay S26 The S26 register specifies the amount of time (0-255) in 0.01 second (10 ms) increments between the RTS signal and the CTS signal. The default value is 0.
6 Status Registers Lookback Timer S28 The S28 register specifies the amount of time in 1.0 minute increments that the modem will remain in dial backup mode before retrying leased line mode. This is only used if automatic dial backup is enabled. A zero will disable automatic lookback to leased line. The default value is 15 minutes. Table 7: Bit Value 7-0 0-255 Command Description Time in 1 minute increments (0=disabled) * default -18 V.3229 / V.
6 Status Registers Bit Mapped S29 Table 8: 0 *0 1 *NT1 *NT Enable AT command set Disable AT command set 1 *0 1 *RO *RO1 Options retained at disconnect Options restored at disconnect 2 *0 1 *FT *FT1 Disable V.32 fast train Enable V.32 fast train 6-3 -- -- 7 *0 1 *FB *FB1 Reserved DTE fallback disabled DTE fallback enabled * default Bit Mapped S30 Table 9: 0 -- 1 *0 1 4-2 -- 5 *0 1 7, 6 00 01 10 *11 -- Reserved V.25 ASCII V.25 EBCDIC -- Reserved NRZ NRZI &M4 &M5 V.
6 Status Registers * default -20 V.3229 / V.
6 Status Registers 4-Wire Leased Line Training Sequence S31 Table 10: 0 *0 1 -- V.33 training sequence V.
6 Status Registers Reserved Bit Mapped S34 Table 12: 0 *0 1 *AN *AN1 Bilateral analog = disable Bilateral analog = enable 1 *0 1 *DG *DG1 Bilateral digital = disable Bilateral digital = enable 2 *0 1 *LA *LA1 DTE commanded LAL = disable DTE commanded LAL = enable 3 *0 1 *RD *RD1 DTE commanded RDL = disable DTE commanded RDL = enable 7-4 -- -- Reserved *default S35-38 Reserved Connect Message S39 Table 13: 4-0 -- -- Reserved 5 *0 1 -- Send connect message DTE rate Send connect m
6 Status Registers S40-50 V.3229 / V.
6 Status Registers Reserved Bit Mapped S51 The S51 register selects dial line transmit level from -9 to -21 dBm in 1dB increments. Table 14: Bit Value Command 4-0 9 to 21 *TDn 7-5 -- -- Description Transmit level in dBm (-9 through -21 dBm) Reserved *default Bit Mapped S52 The S52 register selects leased line transmit level from 0 to -21 dBm in 1 dB increments.
6 Status Registers Table 16: Bit Value Command 0 *0 1 1 -- -- 3, 2 *00 01 10 11 %R %R1 %R2 %R3 7-4 -- -- Description 801 V.32 timeout long 801 V.32 timeout short Reserved Auto rate renegotiation threshold disabled Low BER Medium BER High BER Reserved * default V.3229 / V.
6 Status Registers Flow Control S54 The S54 register selects the flow control options.
6 Status Registers Table 18: 1, 0 7-2 00 01 %C %C2 10 %C3 *11 %C1 -- -- Compression disabled Compression enabled on transmit data only Compression enabled on receive data only Compression enabled on transmit and receive data Reserved * default V.3229 / V.
6 Status Registers Number Code Application S57 Table 19: 0 7-1 *0 *RC 1 *RC1 -- -- Standard number codes 15 - 4800 bps 18 - 9600 bps Alternate number codes 11 - 4800 bps 12 - 9600 bps Reserved * default 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.
6 Status Registers break is encountered. Refer to Break Control section in Chapter 5 for further explanation. Table 21: Bit Value Command 2-0 000 001 010 011 100 *101 \K \K1 \K2 \K3 \K4 \K5 7-3 -- -- Description Break option 0 Break option 1 Break option 2 Break option 3 Break option 4 Break option 5 Reserved * default V.3229 / V.
6 Status Registers Bit Mapped S60 Table 22: 0 0 *1 %E %E1 1 -- -- 2 *0 1 \C \C1 Disable auto-reliable data buffer Buffer data for 4 seconds or 200 characters 5-3 111 110 101 100 *011000 \O \U \Y \Z Originate an MNP link Accept an MNP link Switch to MNP from normal Switch to normal from MNP Mode selected from S70 6 0 \R *1 \R1 RI blinks for ring and remains on for duration of call RI blinks for ring and turns off when call is answered *0 1 \V \V1 Disable protocol result codes Enable p
6 Status Registers Table 23: 3 0 1 7 bit word length 8 bit word length 5, 4 00 01 10 11 Mark parity No parity Odd parity Even parity 7, 6 -- -- Reserved * default V.3229 / V.
6 Status Registers Disconnect Buffer Delay S62 The S62 register determines the delay before disconnect, to allow buffers to empty, when disconnect conditions exist. Table 24: Bit Value Command 7-0 *0 1-255 %D %Dn Description Buffer disabled Disconnect buffer delay value (n=1-255 seconds) * default Maximum Transmit Block Size S63 The S63 register sets the maximum transmit block size.
6 Status Registers The S64 register stores the selected ASCII value of the auto-reliable fallback character. Table 26: Bit Value Command Description 7-0 *0 1-127 %A %An Disable auto-reliable fallback character ASCII value 1-127 (n=1-127) * default S65 Reserved Bit Mapped S66 Table 27: 0 0 1 &Y &Y1 7-1 -- -- User option 1 loaded at powerup/reset User option 2 loaded at powerup/reset Reserved Link Speed Status S67 The S67 register indicates the true data link (DCE) speed.
6 Status Registers Table 28: 3-0 0000 0001 0010 0011 0100 0111 0101 0110 1000 1001 7-4 -- N/A 300 bps 1200 bps 2400 bps 4800 bps 7200 bps 9600 bps uncoded 9600 bps trellis 12000 bps 14400 bps -- Reserved * default S68 Reserved 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 14400 bps is determined by S80.
6 Status Registers * default V.3229 / V.
6 Status Registers Operating Mode S70 The S70 register determines the protocol operating mode and action taken on an error correcting attempt failure. LAPM is assigned highest priority. Example: With \N7 selected the modem tries a 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.
6 Status Registers Table 31: Bit Value 2-0 000 001 010 011 100 101 Command Protocol not active Protocol negotiation in progress MNP level 2 active MNP level 3 active MNP level 4 active MNP level 5 active (MNP with data compression LAPM active LAPM with data compression active 110 111 7-3 -- Description -- Reserved * default V.3229 / V.
6 Status Registers Bit Mapped S72 Table 32: 0 *0 \J 1 \J1 Disable slaved DTE/DCE (constant speed DTE on) Enable slaved DTE/DCE (constant speed DTE off) 1 *0 1 Link parity option disabled Link parity option enabled 2 0 1 No link parity error Link parity error received (cleared on read) 3 0 1 &R2 CTS does not follow DCD CTS follows DCD 0 1 &R9 CTS does not equal RTS CTS equals RTS 6-5 -- -- 7 *0 1 4 Reserved Disable autocallback Enable autocallback * default S73-77 Reserved Autoca
6 Status Registers Table 33: Bit Value 7-0 0-255 Command Description Time in seconds before autocallback V.3229 / V.
6 Status Registers Break Length S79 The S79 register sets the length of the break sent to the DTE when a break signal is received. Range from 1-255 in 20 ms increments. Default is 35 (700 ms). Table 34: Bit Value Command 7-0 1-255 \B \Bn Description Send break Set break length (n=1-255) Serial Port Speed S80 The S80 register indicates the serial port speed.
6 Status Registers Reserved Bit Mapped S84 Table 36: 0 *0 1 Any key abort enabled Any key abort disabled 1 *0 Remote DCD goes low in RDL and remote configuration Remote DCD goes high in RDL and remote configuration 1 2 *0 1 Fallback to V.22 rates normally Reduced time to fallback to V.
7 V.25 bis Autodialer Chapter 7 V.25 bis Autodialer GENERAL 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 (Chapter 5). If using the LCD ¥Scroll through the menu to Main Menu 5, MODIFY CONFIGURATION. ¥Advance to and enter the DTE PARAMETERS submenu. ¥Select SYNC DATA. ¥Advance to DIAL METHOD. ¥Select either V.25 BISYNC DIALER or V.25 SDLC DIALER or V.
7 V.25 bis Autodialer 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. Not all commands have parameters. For example the CIC command has no parameter. GUIDELINES Use the following guidelines when working with V.
7 V.25 bis Autodialer ¥Command strings can be upper or lower case. Responses are always upper case. ¥Only synchronous data formats are implemented. They include Bisync and SDLC (NRZ format) in ASCII or EBCDIC. Invalid Responses Explanations Except when stated otherwise, the following explanations for invalid INV responses apply: INVC Any transmission error (parity, framing, etc.). INVMS Receiving too many characters for any command.
7 V.25 bis Autodialer ters that does not require parameters. ¥Any parameter containing too many characters. INVPV This message has one of three possible meanings: ¥Any parameter set containing invalid characters ¥Any parameter or parameter set containing no valid (only ignored) characters ¥Any parameter set containing an out-ofrange parameter DIAL PARAMETERS Table 7-1 lists and describes the parameters used in autodialing. The memory available for dialing can hold up to 40 characters.
7 V.25 bis Autodialer Table 1: < Pause for programmed delay time P Pulse dialing T Tone dialing* & Flash (go on hook) for ms ; Return to command mode after dialing Space, dash, parenthesis, period Parameters inserted for readability V.25 bis COMMAND AND RESPONSE DEFINITIONS 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...
7 V.25 bis Autodialer INVCU Invalid command - command unknown. Example: TRN (205)-555-0124 INVMS Invalid command - message syntax error. Examples: CRN;(205)-555-0124 CRN; (semicolon invalid) INVPS Invalid command - parameter syntax error. Examples: CRN (205)-555-0124 CRN (205)-555;0124 CRN INVPV Invalid command - parameter value error. Examples: CRN (205)-555-012Q CRN - - - CFIET Call failure - reorder or busy. CFIRT Call failure - timeout occurred. CFIDT Call failure - no dial tone. INC -6 V.
7 V.25 bis Autodialer Incoming ring detected. 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 32 dial parameters. Ignored characters in the dial number are not stored. Nine stored numbers are available at addresses 1-9. Responses: Same as for the CRN command. Intermediate Call Progress Responses The following responses are given only if enabled.
7 V.25 bis Autodialer CFINS Call failure - number not stored. If the number is linked with other numbers, via a PRL command, failure responses are returned as {sep}a;{call progress messages} . . . where a is the address dialed, followed by the separator field and call progress messages (CFI, etc.). 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.
7 V.25 bis Autodialer LSN sequence for BISYNC format (the last LSN string terminates with per V.25 bis). For synchronous bit-oriented operation, each LSN string is treated as an individual message per V.25 bis. All stored numbers are sent to the DTE as LSNa;nn...n{sep}a;nn...n... where a is the stored number address and nn....n is the number stored. Disregard Incoming Call DIC The command for disregarding an incoming call does not require parameters.
7 V.25 bis Autodialer Example: SIC; 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: VAL Valid command received. Transmitted on receiving an error-free command with no transmission error such as a parity error. This confirmation is sent before the command is executed. INVCU Invalid command - command unknown. Example: TIC INVMS Invalid command - message syntax error.
7 V.25 bis Autodialer Responses: Same as for the CRS command. Failure response is {sep}r;{call progress messages}... where r is the recall count (1 < = r < = n; 1,2...,etc.), followed by a separator field and call progress messages (CFI XX, etc.). If the call fails to connect, this is repeated for the specified number of times. Link Number by Address PRL a;b This command links the number at address a with the number at address b. The addresses are one digit decimal values.
7 V.25 bis Autodialer 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. Transmitted on receiving an error-free command with no transmission error such as a parity error. This confirmation is sent before the command is executed. INVCU Invalid command - command unknown.
7 V.25 bis Autodialer Examples: PRL 1;Q PRL Q;1 PRL 1;45 where only addresses 01 - 09 are defined Request List of Linked Numbers RLL The request list of linked numbers command is an RLL with no parameters. Responses: INVCU Invalid command - command unknown. Example: TLL INVMS Invalid command - message syntax error. Example: RLL; LSL List linked numbers. In all LSL examples, if no number is stored at the specified address no response is sent.
7 V.25 bis Autodialer LSLa;l{sep}a;l where a = stored address and l = link address. 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. Example: RLV; LSV List version The version information is sent to the DTE as LSVS362700xxx01yyyddr where xxx is the code revision of the microcontroller PROM and yyy is the code revision.
7 V.25 bis Autodialer COMMAND PRO xxx;yy;0;0.. The program options command is PRO followed by the starting register address (1 to 3 decimal digits), option count (1 or 2 decimal digits) and the data for each option (1 to 3 decimal digits per option). Refer to the OPTIONS section for available options with definitions, possible settings, and default values. The modem must be able to accept 40 non-ignored characters besides the PRO command (leading zeros and semicolons are not considered ignored characters).
7 V.25 bis Autodialer 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. Examples: PRO 10;5;0;0;0;2;1 This invalid message can be returned when a block of options is being changed. The conditions for this invalid response are as follows: ¥An undefined option number is specified.
7 V.25 bis Autodialer ¥An out-of-range value for a particular option is specified. In the above example, if the fourth value in the option string is undefined or out-of-range for option 13 in a certain modem (and no other error conditions apply) options 10 through 12 would be changed as specified in the command message. The next option to be changed would be option 13.
7 V.25 bis Autodialer Examples: PRK;0 PRK Q Restore Factory Settings PRP n PRP n restores current option settings to factory option set n where n is a 1 digit decimal number. Note: Restoring a factory option set other than factory option 9 disables the V.25 synchronous dialer. If no parameter follows the command, the modem automatically selects factory option set 1. Responses: VAL Valid command received. Transmitted on receiving an error-free command with no transmission error such as a parity error.
7 V.25 bis Autodialer INVCU Invalid command - command unknown. Example: TRP INVMS Invalid command - message syntax error. Examples: PRP;1 PRP Q 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.
7 V.25 bis Autodialer possible settings, and default values. Responses: INVCU Invalid command - command unknown. Example: TLO 0;1 INVMS Invalid command - message syntax error. Examples: RLO;0;1 RLO Q;1 INVPS Invalid command - parameter syntax error. Examples: RLO 0;1; RLO 0;1;4 RLO 0;001 INVPV Invalid command - parameter value error. Examples: RLO 0;Q RLO 0;0 RLO999;45 LSO List stored options. The separator {sep} is a -20 V.3229 / V.
7 V.25 bis Autodialer 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.
7 V.25 bis Autodialer Intermediate call progress messages 0 - Disable 1 - Enable Default value = 0 003: Blind dial 0 - Disable 1 - Enable Default value = 0 004-006: Not applicable 007: Long space disconnect 0 - Disable 1 - Enable Default value = 1 008-019: Not applicable 020: Programmable / permissive operation 0 - Permissive 1 - Programmable Default value = 0 021-022: Not applicable 023-049: Reserved for future use -22 V.3229 / V.
7 V.25 bis Autodialer 050: Mode 0 - 2--wire dial-up operation (PSTN) 1 - 4--wire leased line operation 2 - 2--wire leased line operation Default value = 0 051: Primary transmit / receive rate (See Rate Select section below.) Default value = 36 (9600 bps) 052-054: Not applicable 055: Transmit clock 0 - Internal 1 - External 2 - Receive (slave) Default value = 0 056: Leased line transmit level Transmit level (- {decimal} dBm) Default value = 0 057-062: Not applicable 063: Autoanswer V.3229 / V.
7 V.25 bis Autodialer 0 - Disable 1 - Enable (answer after 1 to 255 rings) Default value = 1 064: Line current disconnect 0 - Off 1 - Short (8 ms) 2 - Long (90 ms) Default value = 2 065-075: Not applicable -24 V.3229 / V.
7 V.25 bis Autodialer 076: Speaker control 0 - Off 1 - On 2 - N/A 3 - N/A 4 - On until CD 5 - N/A 6 - Off while dialing Default value = 4 077: Speaker volume 0 - Low 1 - Medium 2 - High Default value = 1 078-084: Not applicable 085: Constant carrier RTS/CTS delay 0 to 250 ms Must be set in increments of 10 ms: 10, 20, 30 . . . 250 Default value = 0 086: Not applicable 087: DTR dropout timer 0 to 255 in 10 ms increments V.3229 / V.
7 V.25 bis Autodialer DTR must turn off for this length of time to be recognized.
7 V.25 bis Autodialer Loss of carrier disconnect 0 - Off 1 to 255 in 100 ms increments Default value = 14 (1.4 sec) 095: DTR dial address Stored telephone number address to dial on DTR off-to-on transition Default value = 1 096: DTR dial 0 - Disable 1 - Enable 2 - N/A Default value = 0 097: Not applicable 098: Call timeout 0 - Off 1-255 sec Default value = 30 sec 099-102: Not applicable 103: Signal quality retrain 0 - Disable 1 - Send training sequence on poor quality Default value = 1 104-106: V.3229 / V.
7 V.25 bis Autodialer Not applicable 107-899: Reserved for future use 900-902: Not applicable 903: Bilateral loop 0 - Disable 1 - Enable Default value = 0 During a test bilateral loop is defined as follows: Test Commanded Loop 1 Loop 2 Loop 3 Loop 4 Bilateral Loop Loop 2 Loop 1 Loop 4 Loop 3 Loop definitions are per CCITT V.54. 904: DTE commanded remote digital loopback 0 - Disable 1 - Enable Default value = 0 905: -28 V.3229 / V.
7 V.25 bis Autodialer DTE commanded local analog loopback 0 - Disable 1 - Enable Default value = 0 906: Remote commanded test 0 - Disable 1 - Enable Default value = 1 907: Test timer 0 - Until DTR drops TTT - 1 to 255 sec Default value = 0 908: Not applicable 909-999: Reserved for future use Rate Select 000-006: Not applicable 007: V.22 1200 bps V.22 bis 2400 bps 008: 009-033: V.3229 / V.
7 V.25 bis Autodialer Not applicable 034: V.32 4800 bps echo canceling V.32 9600 bps echo canceling V.32 9600 bps trellis echo canceling 035: 036: 037 - 045: Not applicable 046: V.32 bis 7200 bps trellis echo canceling 047: V.32 bis 12,000 bps trellis echo canceling 048: V.32 bis 14,400 bps trellis echo canceling 049-999: Reserved for future use -30 V.3229 / V.
8 Protocols Chapter 8 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.
8 Protocols When a LAPM or MNP link is established the modem is in reliable mode. V.42 bis allows negotiation with a remote modem to the highest level of protocol common to both units. Both LAPM and MNP control data errors by retransmitting any block of data that was corrupted in transit. LAPM is assigned highest priority and if not supported, then an MNP connection is attempted. AUTO-RELIABLE In auto-reliable mode the modem negotiates to the highest protocol (LAPM or MNP) common to both modems.
8 Protocols that the remote modem supports compression. If not, a reliable connection is made without compression. Although data compression is compatible with any type of data, it is most efficient for ASCII text files. For maximum throughput when using data compression, the terminal should be set to a higher speed than the "true data link speed" with the constant speed interface on and flow control enabled. When transmitting or receiving data files in one direction, the throughput can be increased for V.
8 Protocols NORMAL MODE No error control with or without constant speed DTE interface. Data is buffered. DIRECT MODE The DTE speed and DCE speed are forced to be the same. No error control or buffering. FLOW CONTROL -4 V.3229 / V.
8 Protocols 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. As the modem continues to transmit data and the buffer empties, flow control is again used to start data from the DTE. V.3229 / V.
9 Protocols Chapter 9 Maintenance Warning: Disconnect power before performance maintenance. Although dangerous voltage levels are not exposed, disconnecting power will ensure an electric shock hazard is not 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 If a fuse fails, replace it with one of equal rating. Repeated failure indicates a more serious problem.
9 Maintenance -2 V.3229 / V.
Specifications Appendix A Specifications Size Width 7.0 inches (17.78 cm) Depth 10.5 inches (26.67 cm) Height 2.25 inches (5.72 cm) Weight 2 lbs. 13 oz. (1.28 kg) 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 V.3229 / V.
Specifications Requirements The modem can be ordered for operation with one of three power input options. Voltage: 115 Vac ± 10%; 50-60 Hz, 230 Vac ± 10%; 50-60 Hz, or 12 to 60 Vdc Power consumption: 14 watts Telephone Line Balanced 600 ohm type 3002 or equivalent 16 dB nominal loss, frequency translation up to ± 10 Hz Digital Interface Conforms to EIA-232D and CCITT V.24 Modem Data Rates 14400, 12000, 9600, and 7200 trellis coded, 9600 and 4800 uncoded as stated in CCITT recommendation V.
Specifications Frequencies V.32 bis 1800 Hz OriginateAnswer 1200, 24001200 Hz ±.01% 2400 Hz ±.01% 300 bps Mark:1270 Hz ±.5% 2225 Hz ±.5% Space:1070 Hz ± .5%2025 Ηz ± .5% Internal Transmit Clock Frequency Selected bit rate ± 0.01% External Transmit Clock Frequency Selected bit rate ± 0.
Specifications 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 150 ± 2 ms, user selectable in 10 ms increments. (The default is 0 ms) -D V.3229 / V.
Interfaces Appendix B Phone Jack Descriptions DIAL LINE PIN FUNCTIONS The 8-pin DIAL jack connects to the PSTN dial-up lines. Pin functions are Pins 1, 2 Not used Pin 3 MI Switch hook on exclusion key telephone Pin 4 R Ring side of telephone line Pin 5 T Tip side of telephone line Pin 6 MIC Switch hook on exclusion key telephone Pin 7 PR To data jack program resistor Pin 8 PC To data jack program resistor TELSET / LEASED V.3229 / V.
Phone Jack Descriptions LINE PIN FUNCTIONS The 8-pin TELSET / LEASED LINE jack allows a standard telephone or a leased line to be connected to the modem. The pin functions for this jack are Pins 1, 2 Transmit pair - 4-wire leased line or Tx and Rx for 2-wire leased line Pins 4, 5 Ring and tip (respectively) of telephone line for TELSET Pins 7, 8 Receive pair - 4-wire leased line -B V.3229 / V.
Interfaces V.3229 / V.
Phone Jack Descriptions -D V.3229 / V.
Test Procedures Appendix C Test Procedures FAULT ISOLATION PROCEDURE This test procedure and the indicator lights built into the modem allow a rapid check of the terminal, modem, and telephone line interfaces. 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 tests are enabled at both sites before starting the fault isolation procedure.
Test Procedures FALLBACK RATES Since there is no standard fallback procedure from V.32b rates to V.22 rates, problems may arise when a V.32 optioned for 14400 originates a call to a V.22 bis modem. If this is a problem, change the originate modem speed to 2400 bps from the front panel or with the AT command AT%B3. MODEM AND TELEPHONE LINE CHECK Step 1 ¥Configure the modem for LOCAL ANALOG LOOP WITH TEST PATTERN.
Test Procedures RD and / or TD may be on, off, or flashing depending on the type of DTE and its operating state. V.3229 / V.
Test Procedures ¥If the circuitry is working properly, the front panel indicators show the following: ¥Configure the modem for LOCAL ANALOG LOOP to switch the transmitter back to its normal data input . ¥The modem should display on the local monitor whatever is entered at the local DTE. ¥If the transmit data input is in a mark hold condition, both the TD and RD indicators should remain off. ¥If the transmit data input is in a space hold condition, both the TD and RD indicators should come on.
Test Procedures modem receives and then retransmits the data back to the local mode. If digital bilateral loop is enabled at the remote, the remote DTE is looped back to itself. ¥An alternative to the above procedure is to request the operator at the remote modem to configure his modem for LOCAL DIGITAL LOOP. Configure the local modem for TEST PATTERN. The remote modem receives and retransmits the data back to the local modem. ¥The TEST PATTERN ERRORS display will count received errors.
Test Procedures ¥An alternative to the above procedure is to request the operator at the remote modem to place his modem in LOCAL ANALOG LOOP and enable his bilateral analog option. This places the remote modem in local analog loop test. It also connects the transmit phone line to the receive phone line through a buffer amplifier stage. At the local modem, configure for TEST PATTERN.
Test Procedures Diagnostic tests are divided into four categories: online, offline, those with test patterns, and those without. For test pattern diagnostics the LCD displays a cumulative error count. For other tests the DTE transmission is the test signal. Disparity between DTE transmitted and received characters indicates errors. Table C-1 indicates with an X the operating mode required for specific tests.
Test Procedures Note: Local Analog Loopback, with or without test pattern, is the only test available in protocol mode. A diagnostic test performed during dial backup will terminate when the modem performs leased line lookback. Local Analog Loop The local modem transmitter is connected to its receiver so the analog signal normally sent over the telephone line is received locally. If operating on 2or 4-wire private lines, the leased lines are terminated into 600 ohms (Figure C-1).
Test Procedures This test is valid only in 4-wire operation. The initiating modem signals the remote modem to go to Remote Analog Loopback. The remote receive leased line connects to the transmit leased line through a buffer amplifier (Figure 3-4). The remote modem transmitter goes off, but its receiver stays connected and waits for the signal to end the test. Local Digital Loop V.3229 / V.
Test Procedures The local modem receiver connects to its transmitter so received data is digitally processed and retransmitted to the remote site. If Digital Bilateral Loopback is enabled locally, the local DTE is looped back to itself (Figure C-5). If disabled, the local DTE receives a constant mark. Remote Digital Loop The initiating modem signals the remote modem to enter Digital Loopback.
Test Procedures When Local Analog Loopback, Remote Analog Loopback, or Remote Digital Loopback is selected, the locate DTE transmits data may be replaced by a V.52 compatible test pattern (Figures C-7 and C-8). To do so answer yes to the LCD prompt. V.3229 / V.
Command Index and Defaults Appendix D Command Index and Defaults GENERAL This reference guide provides asynchronous command characters and their meanings. Pages listed provide initial information on the commands. S-registers are listed as a cross reference.
Command Index and Defaults * factory default Command Page S-Reg Description E E1 5-23 S14 F F1 5-24 Not supported - returns ERROR Disables online character echo H 5-24 Hang up I I1 I3 5-24 Request product code Request EPROM CRC value Request product version L or L1 L2 L3 5-24 S22 Speaker volume low Speaker volume medium* Speaker volume high M M1 M2 M3 5-25 S22 Speaker off Speaker off when carrier is present * Speaker always on Speaker off when dialing and carrier is present
Command Index and Defaults * factory default Command Page S-Reg Description X 5-7 S22 CONNECT (code 1), for all speeds, no dial tone or busy signal detection Appropriate connect codes for rate, no dial tone detection Wait for dial tone (appropriate connect codes) Detect busy signal (appropriate connect codes) Wait for dial tone, detect busy signal * (appropriate connect codes) Y Y1 5-25 S21 Long space disconnect disabled Long space disconnect enabled * Z Z1 5-36 &C &C1 &C2 &C3 5-17
Command Index and Defaults * factory default Command Page S-Reg Description &G &G1 &G2 5-26 S23 No guard tone * 550 Hz tone 1800 Hz tone &L &L1 &L2 5-26 S27 S32 Dial line * Leased line 2-wire Leased line 4-wire &M &M1 &M2 5-26 S27 Async dial / async data * Async dial / sync data Dials stored number when DTR off / on transition is detected / sync data Manual dial / sync data V.25 bis autodialer with BISYNC protocol / sync data V.
Command Index and Defaults * factory default Command Page S-Reg Description &T6 &T7 &T8 &T9 Initiate remote digital loopback Initiate self test remote digital loopback Initiate self test analog loopback Initiate self test remote analog loopback &V &V1 5-36 View configuration profiles Display received signal status &W 5-34 Store current configuration to user option set #1 Store current configuration to user option set #2 &W1 &X &X1 &X2 5-28 S27 Internal clock * External clock Receiv
Command Index and Defaults * factory default Command Page S-Reg Description %C %C1 5-50 S56 Compression disabled Compression enabled on transmit and receive data * Compression enabled on transmit data only Compression enabled on receive data only %D %Dn 5-29 S62 Disable disconnect buffer delay * Set disconnect buffer delay in seconds n (n=1-255) %E %E1 5-29 S60 Disable auto retrain Enable auto retrain * %P= 5-38 %C2 %C3 Sets remote configuration security code to value entered a
Command Index and Defaults * factory default Command Page S-Reg Description \A \A1 \A2 \A3 5-49 S63 Maximum block size of 64 characters Maximum block size of 128 characters Maximum block size of 192 characters Maximum block size of 256 characters * \B \Bn 5-49 S79 Transmit a break signal Sets break length in 20 ms increments, n=1-255, default is 35 (700 ms) \C \C1 5-50 S60 Disable auto-reliable buffer * Buffer data for 4 seconds or 200 characters \G \G1 5-46 S54 Disable modem p
Command Index and Defaults * factory default Command Page S-Reg Description \O 5-50 S60 Originate a reliable link \Q \Q1 \Q2 \Q3 \Q4 \Q5 \Q6 \Q7 5-44 S54 Disable DTE flow control Enable DTE XON/XOFF flow control * Enable CTS flow control to the DTE Enables bilateral CTS/RTS flow control Disable DCE flow control Enable DCE XON/XOFF flow control * Enable CTS flow control to the DTE Enable CTS flow control to the DTE \R 5-18 S60 Ring indicate, blinks for ring and remains on for durati
Command Index and Defaults * factory default Command Page S-Reg Description *CNx, n 9) 5-36 Store phone number n in location x (x=1- *DB *DB1 5-31 S32 Manual dial backup operation * Automatic dial backup operation *DG *DG1 5-22 S34 Disables bilateral digital loop * Enables bilateral digital loop *FB *FB1 back 5-20 S29 Ignore pin 23 * Pin 23 transition causes DTE speed fall- *FT *FT1 5-31 S29 Disable fast train * Enable fast train *LA *LA1 5-22 S34 Ignore pin 18 * DTE com
Command Index and Defaults * factory default Command Page S-Reg Description *TDn 5-33 S52 Sets dial transmit level to n where n is a number between 9 and 21 corresponding to -9 to -21 dBm *TLn 5-33 S52 Sets leased line transmit level to n where n is a number between 0 and 21 corresponding to 0 to -21 db $V 5-30 Display product serial number Security Commands $S=x 5-40 Sets an empty password location to x $C=x,y 5-40 $C=x,- 5-40 Changes either password where x represents the
Command Index and Defaults STATUS REGISTERS S-Reg RO/RW Page Function Default S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 sec) S11 S12 S14 S16 S18 S21 S22 S23 S25 S26 S27 S28 S29 S30 S31 S32 S34 S39 S51 S52 S53 S54 S56 S57 RW RO RW RW RW RW RW RW RW RW RW 6-6 6-6 6-6 6-6 6-6 6-6 6-7 6-7 6-7 6-7 6-7 Ring to answer Ring count Escape sequence character End-of-line character Line feed character Backspace character Pause before blind dialing Pause for carrier Pause for comma Carrier validation Loss ca
Command Index and Defaults RO=Read only RW=Read or write S-Reg RO/RW Page Function S58 S59 S60 S61 S62 S63 S64 S66 S67 S69 S70 S71 S72 S78 S79 S80 S84 RW RW RW RO RW RW RW RW RO RW RW RO RW RW RW RO RW 6-19 6-19 6-20 6-20 6-21 6-21 6-21 6-21 6-22 6-22 6-23 6-23 6-24 6-24 6-25 6-25 6-26 Inactivity timer Break control Bit mapped DTE character size, parity Disconnect buffer delay Maximum block size Auto-reliable character Bit mapped Link speed status Maximum DCE speed Operating mode Operating mo
Command Index and Defaults V.25 bis DIALER COMMANDS Synchronous Command Page Description CIC 7-8 Connect incoming call command CRN nn...n 7-4 Dial command (nn...
Command Index and Defaults at address b PRN a; nn...n 7-5 Program number command (nn...n = number to be dialed, a = ad- Synchronous Command Page Description PRO xxx;yy;0;0...
Command Index and Defaults CNX @ 14400 bps V.32 bis Intermediate call progress - connection made at 14400 Response Message Meaning CNX @ 12000 bps V.32 bis Intermediate call progress - connection made at 12000 CNX @ 9600 bps V.32 bis Intermediate call progress - connection made at 9600 CNX @ 7200 bps V.32 bis Intermediate call progress - connection made at 7200 CNX @ 4800 bps V.32 bis Intermediate call progress - connection made at 4800 CNX @ 2400 bps 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 - 14400 trellis Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial line transmit level -10 dBm Dial line Jack type RJ11 (permissive) Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Pause delay 2 seconds Call timeout 30 seconds Answer on 1 ring 801 V.32b timeout long Autocallback disabled ¥DTE OPTIONS Async data DTE rate - 9600 8 bit No parity Async controlled dialer AT command set enabled Ignores DTR DSR forced high DCD forced high CTS forced high DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium On until carrier detect FACTORY OPTION SET # 2 (ASYNCHRONOUS DIAL-UP WITHOUT V.
Command Index and Defaults ¥PROTOCOL OPTIONS LAPM protocol disabled * MNP protocol disabled * Direct mode DTE flow control disabled * DCE flow control disabled * XON/XOFF pass through disabled Inactivity timer off Break Option 0 V.42 fast detect disabled * ¥DIAL LINE OPTIONS Tone dial Auto dial #1 Wait for dial tone Wait delay 2 seconds Pause delay 2 seconds Call timeout 30 seconds Answer on 1 ring 801 V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET #3 (SYNCHRONOUS DIAL-UP) (AT&F3) ¥MODEM OPTIONS DCE rate - 14400 trellis Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial TX level -10 dBm Dial line Jack type RJ11 (permissive) Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults ¥DTE OPTIONS Sync data * Dial method manual * AT command set disabled * DTR disconnects * DSR normal * DCD normal * CTS follows RTS * RTS/CTS delay 0 ms * DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium On until carrier detect -T V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET # 4 (SYNCHRONOUS 4-WIRE LEASED LINE) (AT&F4) ¥MODEM OPTIONS DCE rate - 14400 trellis Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial TX level is -10 dBm Leased line * 4-wire * Lease Tx level is 0 dBm * Manual dial backup * Lookback timer is 15 min * Jack type RJ11 (permissive) Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults Answer on 1 ring 801 V.32b timeout long Autocallback disabled ¥DTE OPTIONS Sync data * AT command set disabled * Ignores DTR DSR normal * DCD normal * CTS follows RTS * RTS/CTS delay 0 ms * DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium Speaker off * -V V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET #5 (ASYNCHRONOUS 4-WIRE LEASED LINE WITH V.
Command Index and Defaults ¥DIAL LINE OPTIONS Tone dial Auto dial #1 Wait for dial tone Wait delay 2 seconds Pause delay 2 seconds Call timeout 30 seconds Answer on 1 ring 801 V.
Command Index and Defaults Jack type RJ11 (permissive) Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults ¥SPEAKER OPTIONS Volume medium Speaker off -Z V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET # 7 (SYNCHRONOUS 2-WIRE LEASED LINE NORMAL ORIGINATE) (AT&F7) ¥MODEM OPTIONS DCE rate - 14400 trellis Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial TX level is - 10 dBm Leased line * 2-wire * Lease Tx level is 0 dBm * Manual dial backup * Lookback timer is 15 min * Jack type RJ11 (permissive) Line current disconnect long Long space discon
Command Index and Defaults Call timeout 60 seconds * Answer on 1 ring 801 V.32b timeout long Autocallback disabled ¥DTE OPTIONS Sync data * AT command set disabled * Ignores DTR DSR normal * DCD normal * CTS follows RTS * RTS/CTS delay 0 ms * DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium Speaker off -AB V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET # 8 (SYNCHRONOUS 2-WIRE LEASED LINE FORCED ANSWER) (AT&F8) ¥MODEM OPTIONS DCE rate - 14400 trellis Forced answer * Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial TX level is - 10 dBm Leased line * 2-wire * Lease Tx level is 0 dBm * Manual dial backup * Lookback timer is 15 min * Jack type RJ11 (permissive) Line current disconnect long Long space disconnect
Command Index and Defaults Call timeout 60 seconds * Answer on 1 ring 801 V.32b timeout long Autocallback disabled ¥DTE OPTIONS Sync data * AT command set disabled * Ignores DTR DSR normal * DCD normal * CTS follows RTS * RTS/CTS delay 0 ms * DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium Speaker off -AD V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 FACTORY OPTION SET #9 (SYNCHRONOUS V.25 bis DIALER) (AT&F9) ¥MODEM OPTIONS DCE rate - 14400 trellis Normal originate Fast train disabled Auto retrain enabled SQ auto rate disabled Internal transmit clock Dial TX level is -10 dBm Dial line Jack type RJ11 (permissive) Line current disconnect long Long space disconnect enabled V.
Command Index and Defaults ¥DTE OPTIONS Sync data * V.25 SDLC dialer * Character type ASCII * SDLC data format NRZ * DTR disconnect * DSR normal * DCD normal * CTS follows RTS * RTS/CTS delay 0 ms * DTE fallback disabled Options retained at disconnect ¥SPEAKER OPTIONS Volume medium On until carrier detect -AF V.3229 / V.
Command Index and Defaults * Indicates variation from factory option set #1 V.3229 / V.
Abbreviations and Acronyms Celsius A CA ABT Abort Timer OR Answer Back Tone Circuit Assurance CBX Computerized Private Branch Exchange ac Alternating Current CC ACK Carrier Control Acknowledgment, positive ACR Abort Call, Retry CCITT ACU Automatic Call Unit International Consultative Committee for Telegraph and Telephone A/D Analog-to-Digital CCU ADD Communications Control Unit Address Field ADDR Address CD Automatic Gain Control CFICB Carrier Detect AGC Call Failure Indica
Abbreviations and Acronyms CR DIS, DS Carriage Return Disable CRC DLE Cyclic Redundancy Check CRQ Data Link Escape DLO Call Request Data Line Occupied CSA DMS Canadian Standards Association Digital Multiplexer System DOC CSDC Department of Communications (Canada) Circuit Switched Digital Capability DOS Channel Service Unit DPR Channel Service Unit Local Loopback DRS CSU Disk Operating System CSULL Digit Present CTRL Data Rate Select DSR Control Field Data Set Ready CT
Abbreviations and Acronyms End of Number H End of Text OR End of Transmission HDLC Erasable Programmable Read Only Memory HDX EOT EPROM ER High Level Data Link Control Half-Duplex Transmission Hz Hertz (cycles per second) Error ESC Escape (key) I End of Block INC External Transmit Clock INV End of Text INVCU ETB Incoming Call ETC ETX Invalid Invalid Command - Command Unknown EXT External INVMS Invalid Command - Message Syntax Error F INVPS FA Invalid Command - Parameter
Abbreviations and Acronyms Loopback Options NAK Liquid Crystal Display OR Line Current Disconnect NET STAT Negative Acknowledgment LCD LDL Network Status NRZ Local Digital Loopback LDM Non Return to Zero NRZI Limited-Distance Modem LED Non Return to Zero Inverted NS Light Emitting Diode LF No Signal NT Line Feed Network Termination LINK Analog Telephone Line Connection LL O OH Local Loopback Off Hook LO OS Line Occupancy Out-of-Service LRC Longitudinal Redundancy Check LSD
Abbreviations and Acronyms PWI ROM Power Indication Read Only Memory RT Remote Terminal Q RTS, RS Request to Send QAM Quadrature Amplitude Modulation R RX Receive S R Reference Designator RAD Random Access Method S or S/T Reference Designator SCC Serial (or Satellite) Communications Controller RAL Remote Analog Loopback SD Random Access Memory SDLC Send Data RAM Synchronous Data Link Control (IBM) RC Receive Clock SGND, SG RCD Signal Ground Receiver-Carrier Detector SH RCV,
Abbreviations and Acronyms TEI Terminal Endpoint Identifier W WATS Wide Area Telecommunications Access Method (AT&T) TELCO Telephone Company TELSET Telephone Set X TM Test Mode X.
COPYRIGHT Copyright 1993, 1994 by Motorola Inc., Information Systems Group. 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.
