COMSPHERE 3800PLUS MODEMS USER’S GUIDE Document No.
COMSPHERE 3800Plus Modems COMSPHERE 3800Plus Modems User’s Guide 3980-A2-GB30-40 5th Edition (October 1998) Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual. For the 3810Plus standalone modems the Universal Service Order Code (USOC) for Permissive mode is RJ11C. The Canadian equivalent to the USOC is CA11. For the 3811Plus carrier-mounted modem the USOC for Permissive mode is RJ21X.
Safety Instructions Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to protect it from overheating, these slots and openings must not be blocked or covered. 3. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the power cord. 4.
COMSPHERE 3800Plus Modems Notices
Government Requirements 3. The Ringer Equivalence (REN) is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all areas, the sum of the RENs should not exceed five (5.0).
COMSPHERE 3800Plus Modems Canada Notice to Users of the Canadian Public Switched Telephone Network The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction.
Table of Contents Preface Objectives and Reader Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . vii How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii 1. Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3800Plus Modems 4. Front Panel Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DCP Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Menu Structure . . . . . . . . . . . . . . . . . . .
Table of Contents 12. Fax Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 Fax Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 13. AT Command Set and S-Registers Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents List of Figures Figure 2-1 2-2 2-3 3-1 3-2 4-1 4-2 4-3 5-1 7-1 7-2 7-3 7-4 7-5 7-6 8-1 8-2 E-1 E-2 3980-A2-GB30-40 Page 3810Plus Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3810Plus Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3600 Hubbing Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3811Plus Modem .
COMSPHERE 3800Plus Modems List of Tables Table 4-1 4-2 4-3 4-4 4-5 5-1 8-1 8-2 8-3 8-4 8-5 8-6 8-7 8-8 8-9 11-1 11-2 11-3 11-4 11-5 11-6 11-7 13-1 13-2 B-1 C-1 C-2 C-3 C-4 C-5 C-6 D-1 E-1 E-2 F-1 F-2 G-1 I-1 I-2 vi Page 3800Plus DCP LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SDCP LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top Level Menu Status . . . . . . . . . . . . . .
Preface Objectives and Reader Assumptions Chapter 12 provides general information about operating 3800Plus modems in fax mode. Chapter 13 provides instructions for displaying and changing AT commands and S-Registers. This manual describes how to install and operate the 3810Plus (standalone) and 3811Plus (carrier-mounted) modems. The reader is assumed to have a basic understanding of modems and their operation. Appendix A provides a menu tree for 3800Plus modems.
COMSPHERE 3800Plus Modems Related Documents viii Contact your sales or service representative to order additional product documentation.
Introduction Overview The COMSPHEREr 3810Plus and 3811Plus modems, extensions of the award-winning COMSPHERE 3800 Series, are a new generation of full-feature, high-speed dial modems that offer reliable asynchronous and synchronous operation over dial- or leased-lines networks. The 3800Plus modems’ software defineability allows for the addition of future enhancements and features.
COMSPHERE 3800Plus Modems • Class 1 and Class 2 Group III Fax modulations: ITU-T V.17 (14,400, 12,000, 9600, and 7200 bps), V.29 (9600 and 7200 bps), and V.27ter (4800 and 2400 bps). COMSPHERE Models The COMSPHERE high-speed modem is available in two models. • Convenient migration to new or optional features through software downloading. • The 3810Plus, a 4-wire/2-wire standalone unit capable of operation on 2-wire dial, or 4-wire leased or 2-wire leased lines. • ITU-T V.
3810Plus Installation 2 Overview 3810Plus Modem Package The standalone 3810Plus modem (Figure 2-1) is capable of either dial or 4-wire/2-wire leased-line operation. It is controlled using AT commands or the diagnostic control panel (DCP). The DCP consists of an LCD which displays selections, three function keys and four directional keys which allow you to maneuver and choose DCP selections, and a row of 13 LED status indicators which display modem activity.
COMSPHERE 3800Plus Modems DIAGNOSTIC CONTROL POWER SUPPLY LCD AND STATUS LEASED (3810Plus ONLY) DIAL (OR LEASED FOR 3820Plus) DTE 1 NMS POWER IN POWER ON/OFF 496-14678-01 Figure 2-1. 3810Plus Modem Customer-Supplied Equipment 3810Plus Modem Installation The following customer-supplied equipment may be required to complete a data communications system using the 3810Plus modem: Before installing your standalone modem, make sure your installation site is clean and well-ventilated.
3810Plus Installation • An 6-pin modular keyed jack for dial (PSTN) lines. 1. Make sure the modem’s rear panel power switch is Off. • A 4-pin modular jack for network management system (NMS) connection. 2. Connect the DB-25-P (male) connector on the cable to the DB-25-S (female) connector labeled DTE 1 (Figure 2-2) on the modem’s rear panel. Use a small screwdriver to tighten the cable to the modem. • A 25-pin DB-25-S receptacle for DTE interface. Connecting 3810Plus Modems with Supplied Cables 3.
COMSPHERE 3800Plus Modems Dial-Line Connection AC Power Supply Connection Use the following procedure to connect the 3810Plus modem to the dial network interface: WARNING Power supplies from other modems may fit into the POWER connector, but connecting the wrong power supply can cause damage to the modem or the power supply. 1. Insert the 6-position, 4-conductor modular plug into the jack labeled DIAL/LEASED (Figure 2-2). 2.
3810Plus Installation Network Management System Connection Modem Power-Up For the 3810Plus modem, use the following procedure to connect the modem to the network management system interface: 1. Insert the subminiature 4-position, 4-conductor modular plug of the 3600 Hubbing Device (Figure 2-3) into the jack labeled NMS (Figure 2-2). Once your modem is properly connected to the DTE, dial and/or leased lines, and ac outlet, press the modem’s rear panel power switch to the ON position.
COMSPHERE 3800Plus Modems Removing and Replacing 3810Plus Modems To remove and replace a 3810Plus modem, perform the following steps: 1. Make sure the modem is offline, and toggle the modem’s rear panel power switch to the Off position. 2. Disconnect the power cord from the ac power outlet, and then from the connector on the rear of the modem. 3. Disconnect the dial and leased-line modular cords from the modem’s rear panel. 4. Disconnect the DTE interface cable from the modem’s rear panel.
3811Plus Installation 3 Overview 3811Plus Modem Package The carrier-mounted 3811Plus modem (Figure 3-1) is capable of dial or 4-wire/2-wire leased-line operation and resides in a COMSPHERE 3000 Series Carrier. The faceplate of the 3811Plus has 16 LED status indicators for displaying modem activity and an audio speaker jack for the carrier’s optional speaker.
COMSPHERE 3800Plus Modems If the modem is to be managed by a network management system, an SDU must be supplied and properly connected to the network management controller. For proper network management connection to the SDU, refer to the appropriate network management system user’s guide. For installation of the 3000 Series Carrier into a cabinet, refer to the COMSPHERE 3000 Series Carrier, Installation Manual.
3811Plus Installation The installation of a 3811Plus varies slightly if an SDCP is installed on the front of the carrier. To install a 3811Plus modem into the carrier without an SDCP, perform the following steps: 2. At the front of the carrier, hold the modem vertically, with the latch on its faceplate in the open position, and insert it into the top and bottom card guides of one of the slots numbered 1–16 (see Figure 3-2).
COMSPHERE 3800Plus Modems If the modem is to communicate with an installed SDCP, install the modem as described above and perform the following steps: Removing and Replacing 3811Plus Modems It is not necessary to power down the carrier to remove and replace a 3811Plus modem. Perform the following steps: 1. Press the Select key on the SDCP. The cursor appears in the carrier selection entry. 2. Press the F1 ( ) or F2 (↓) key until the carrier number you want appears on the LCD.
Front Panel Operation 4 • Check modem status Overview • Set up configuration options This chapter describes how to use the diagnostic control panel (DCP) of the 3800Plus modem. • Initiate diagnostic tests • Access remote modems through the local modem’s DCP Diagnostic Control Panels The LCD displays the result of any command initiated using the DCP. Most of these operations can be performed from an attached asynchronous DTE using the AT command set.
COMSPHERE 3800Plus Modems 3811Plus Faceplate and Shared Diagnostic Control Panel (SDCP) Status Indicators The shared diagnostic control panel (SDCP) is used to manage carrier-mounted 3811Plus modems. Use the SDCP to issue commands to view and select configuration options on, or to monitor tests for, a specific 3811Plus modem. The status indicators on a 3800Plus modem continuously provide information on the modem’s operating condition.
Front Panel Operation Table 4-1 3800Plus DCP LEDs Label Color Indicates Pwr green ON – Power is on and the modem is capable of operating. Alrm red Flashing – A malfunction has been detected in either the modem or COMSPHERE 3000 Series Carrier. Diag (3810Plus only) green The modem has responded to a diagnostic command from network management. Test/142 yellow The modem is involved in a test. Normal operation is not possible.
COMSPHERE 3800Plus Modems The SDCP LEDs are listed and described in Table 4-2. MOVES UP ONE LEVEL FROM CURRENT DISPLAY Table 4-2 SDCP LEDs Label OK Alarm BckUp Test EC Color green red yellow yellow green HIDDEN CHOICE INDICATORS LCD TOP LINE RETURNS DISPLAY TO TOP-LEVEL MENU Idle:28.8 Call_Setup Indicates Power is ON and the modem is capable of operating. F1 The modem has detected a problem with its operation. For example, the modem failed a self-test.
Front Panel Operation Left/Right Scroll Indicator Key The left/right scroll indicator displays when more choices are available to the left and right of what is currently displayed on the LCD. The and Left Scroll Indicator < The left scroll indicator displays when more choices are available to the left of what is currently displayed on the LCD. The LCD does not wrap around to the first choice once you have reached the end of choices. key moves you up one level in the menu tree.
COMSPHERE 3800Plus Modems Menu Structure Configure The menu tree is a hierarchical structure used to display functions that configure and control local and remote 3800Plus modems. It is accessed via the DCP and is shown in Appendix A, Menu Tree. Used to change and save the modem’s configuration options. (See Chapter 8.) Control Used to control the modem’s hardware and software functions. (See Chapter 9.) Remote Used to access and control a remote 3800Plus modem. (See Chapter 10.
Front Panel Operation Top-Level Menu Status and Operational Messages Messages listed in Table 4-5 are dial access security messages that can occur when the optional security feature is installed. Access to all menu tree branches from the DCP begins at the Top-Level menu, the head of the menu hierarchy.
COMSPHERE 3800Plus Modems Table 4-3 (2 of 3) Top Level Menu Status Normal Call Setup Messages Indicates Off Hook The modem is off-hook and waiting to dial a telephone number. Dialing The remote modem is being dialed. Training The modem is training or retraining. EC Negotiating The local and remote modems are negotiating the highest possible level of error control compatible between both modems. Once a level is selected, this LCD message disappears.
Front Panel Operation Table 4-3 (3 of 3) Top Level Menu Status Dial Backup Messages Indicates Dial Standby The modem is operating in Dial Standby mode. DialBckUp:MR* The modem is operating in a Dial Backup mode at the displayed data rate and is configured for Direct mode. Backup:MR* EC** The modem is operating in Dial Backup mode and is configured for error control and data compression on leased lines.
COMSPHERE 3800Plus Modems Table 4-4 Common Operational Messages Common Operational Messages Indicates Please Wait... Appears when a command to a local device takes more than two seconds to complete. Command Sent... Appears when a command is sent to a remote modem. No Rem Response or Remote Modem Fail Appears when a remote modem does not respond to a command within 5 seconds. Command Complete Appears when a command, issued to a local or remote modem, is completed.
Front Panel Operation Selecting Factory Configuration Options key until the appropriate factory 4. Press the preset appears on the LCD, and press the corresponding function key to select your choice. After the modem passes the power-up self-test, configure it for operation using one of the factory preset configurations. 5. Choose Function appears and displays the Edit and Save functions.
COMSPHERE 3800Plus Modems • On initial power-up, the modem is in Command mode. To verify that the modem is connected and functioning properly, enter the following: TYPE: (NOTE: &F1, &F2, and &F4 remove AT command control. The only way to return to AT command control is through the DCP as described earlier in Using the Diagnostic Control Panel (DCP).) AT PRESS: Return (Enter) and The screen displays OK. Where: If the modem does not return OK, refer to Appendix C, Troubleshooting.
Front Panel Operation Diagnostic Control Panel Security Access To access the Front Panel (DCP) Security Access function, perform the following: NOTE This page of the manual is self-supporting and can be removed to prevent unwanted knowledge of the DCP security access selections. key three times. Press the key twice. Press the key once. Frnt Panl Acces Grant Deny Use the DCP security access function to ‘‘lock” the DCP of any 3800Plus modem and prevent unwanted user access.
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Call Setup Branch Overview NOTE The Call Setup branch of the Top-Level menu allows you to dial, disconnect, and answer telephone calls. It also allows you to create and store up to 10 telephone numbers to directory locations. Six different functions can appear under Call Setup: Dial, Disconnect, Answer, Dial Standby or Return to Dial (when applicable), and Change Directory. 3980-A2-GB30-40 5 October 1998 The Dial Standby and Return to Dial functions only appear when the modem is in Dial Backup mode.
COMSPHERE 3800Plus Modems Call Setup Branch To view other directory locations, select Nxt. In the following descriptions, the shaded key indicates what key to press to perform the described operation. Dial Directory: 01 Dialing To access the Call Setup branch from the Top-Level menu, select Call Setup: Idle: 28.8 Call_Setup F1 F2 F1 Once the directory location you want appears on the LCD, press the F2 or F3 key to dial the number.
Call Setup Branch Select Disconnect. Press the Answer. Disconnect Command Complete F1 F2 key until Answer is displayed. Select Answer Command Complete F3 F1 F3 F2 The modem goes on-hook (hangs up) and the call is disconnected. This includes any calls being used for dial backup of leased lines. The Command Complete status message is displayed. The modem goes off-hook and attempts to establish a connection in Answer mode. The Command Complete status message appears on the LCD.
COMSPHERE 3800Plus Modems For example, under normal dial backup conditions, when a problem occurs on the leased line, the modems establish a connection over the dial network using a telephone number stored in directory location 1. Press the key until Dial Standby or Return to Dial is displayed. Select the appropriate function.
Call Setup Branch To access Change Directory from the Call Setup branch, make the following selections: Call Setup: Change_Directory F1 F2 Select Nxt until a blank directory appears on the LCD. (The cursor ( { ) always appears in the first character position.) Select F2 (") or F3 (#) until the desired character is selected. This can be an alpha or numeric character. > F3 02 : 9 z Nxt " Press the key until Change Directory is displayed. Press any function key to select Change Directory.
COMSPHERE 3800Plus Modems Table 5-1 Valid Dial Command Modifier Dial Command modifiers are parameters entered in the dial command string which specify how, when, and what number to dial. The following is a list of parameters the 3800Plus modems recognize: T – Tone (DTMF) dial. Any digit 0–9, *, #, A, B, C, or D can be dialed as tone. P – Pulse dial. Only the digits 0–9 can be dialed in Pulse Dial mode. ,– Pause. Causes the modem to pause before processing the next character in the dial string.
Status Branch 6 Overview Status Branch The Status branch of the Top-Level menu allows you to view the current status of the dial or leased-line connection, the DTE interface, and the identity (for example, serial number and model number) of your equipment. There are up to five selections under Status: VF, Identity, DTE, Options, and Record. To access Status from the Top-Level menu, make the following selections: Idle : 28.
COMSPHERE 3800Plus Modems VF SigQual Signal Quality indicates the condition of the VF line. Possible values are Excelent (Excellent), Good, Fair, Poor, or No Signal. RevLev Receive Signal Level indicates, in decibels referenced to one milliwatt (dBm), the actual strength of the incoming signal. Sig/Noise Signal-to-Noise Ratio indicates, in decibels, the receive signal strength relative to noise on the line.
Status Branch Identity Identity displays the modem’s serial number, model number, firmware revision level, hardware part number and firmware part number. Retrieval of this information is useful if you are purchasing additional or replacement modems and/or making firmware upgrades. To exit this function and remain in the Status branch, press the key. To exit and return to the Top-Level menu, press the key. AT Command Equivalent The AT command I0 displays the product code, normally 144.
COMSPHERE 3800Plus Modems DTE Options DTE displays the state and/or activity of the EIA-232-D interface leads: LSD, DTR, DSR, Tst, TXD, RXD, RTS, and CTS signals are monitored. The interface leads status is updated every 5 seconds. The Options Status function displays all optional firmware features currently installed in the modem (for example, V.29, V.33, and dial network management). If no firmware options are installed, None_Installed appears on the LCD.
Status Branch To access Record from the Status branch, make the following selections: Status Options F1 Press the Record Number 1 Modem O.K. F1 < F3 Record F2 F3 key until Record appears. Select Record. F2 The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and are identified key by a number in the upper right corner.) Press the to view the remaining fields. The message Modem O.K. appears if no sequence faults have occurred.
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Test Branch Overview The Test branch of the Top-Level menu allows you to initiate various modem tests. Use these tests if you are having data communication problems, such as periodic character loss, random errors, or constant format errors. By the process of elimination, you can usually isolate the fault in your system.
COMSPHERE 3800Plus Modems Test Branch Self To access the Test branch from the Top-Level menu, make the following selections: Self performs an internal self-test of the modem, which takes less than a minute to complete. The modem must be offline (not connected with another modem), otherwise Invalid Command appears. This test is not valid in Remote mode and does not appear on the LCD of either modem when in Remote mode. Idle : 28.
Test Branch Loc Analog Loop Loc Analog Loop performs a local analog loopback (ITU-T V.54 Loop 3), Figure 7-1, that verifies modem operation as well as the connection between the DTE and modem. The modem must be offline and in synchronous or asynchronous Direct mode to perform this test, otherwise Invalid Command appears.
COMSPHERE 3800Plus Modems Rem Digital Loop Rem Digital Loop performs a remote digital loopback (ITU-T V.54 Loop 2), Figure 7-2. This test can verify the integrity of the local modem, the communications link, and the remote modem. Any data or pattern entered at the local DTE is sent to and returned from the remote modem. For this test to operate properly, the modems must be online and in Synchronous or Asynchronous Direct mode and, if set for V.34 modulation, must not be in Asymmetric Rate mode.
Test Branch Loc Digital Loop Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem (Figure 7-3). (This test operates the same as an ITU-T V.54 Loop 2 except it is issued at your modem.) This is useful if a remote modem is incapable of initiating a remote digital loopback from its location. For this test to operate properly, the modems must be online and in Synchronous or Asynchronous Direct mode and, if set for V.
COMSPHERE 3800Plus Modems Pattern Pattern can transmit and receive a 511 bit error rate test pattern. It can also be used with a local analog loopback or a remote digital loopback to simulate data passing through the modem. For this test to operate properly, the modems must be online and in Synchronous or Asynchronous Direct mode. Otherwise, the message Invalid:Bffr Mde appears when this test is started. (See Figures 7-4 through 7-6.) Figure 7-4. Pattern Test and Local Analog Loopback Test Figure 7-5.
Test Branch To access Pattern from the Test branch, make the following selections: Test : Pattern F1 key to display BlksRcvd=xxxxxxx, Press the number of blocks of data received. The Pattern test can be exited and reentered without restarting the test. The BlksErrd and BlksRcvd continue counting. > F2 F3 Press the key until Pattern appears. Select Pattern to start this test.
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Configure Branch 8 • Customer 1 and Customer 2 are two additional read and write (changeable) configuration areas where you can create and store additional configurations for specific applications. Overview After installing a 3800Plus modem, you set its software configuration options using either the diagnostic control panel (DCP) or the AT command set. This chapter describes how to access and use the Configure branch of the Top-Level menu via the DCP.
COMSPHERE 3800Plus Modems CONTENTS OF Active (Saved) ARE AUTOMATICALLY COPIED TO Active (Operating) WHEN A SAVE IS COMMANDED VIA THE DCP, ON A RESET, OR ON POWER-UP Active (Operating) Active (Saved) Customer 1 Customer 2 Load Edit Area From Factory • Async Dial • Sync Dial • Sync Leased (Answer/Originate) • UNIX Dial • Cellular (Mobile) • Cellular (PSTN) EDIT AREA ALLOWS YOU TO VIEW AND EDIT CONFIGURATION OPTIONS Save To ANY CHANGES MADE TO CONFIGURATION OPTIONS ARE SAVED TO Active (Saved), Custome
Configure Branch Active (Saved) (ATZ0, ATZ3) Customer 1 (ATZ1) Customer 2 (ATZ2) Factory • Async Dial (AT&F0) • Sync Dial (AT&F1) • Sync Leased Answer (AT&F2) LOAD Active (Operating) USING ATZ OR AT&F COMMAND • UNIX Dial (AT&F3) • Sync Leased Originate (AT&F4) • Cellular (Mobile) (AT&F5) • Cellular (PSTN) (AT&F6) NOTE ON POWER-UP, Active (Saved) IS LOADED TO Active (Operating) Active (Operating) CHANGES MADE USING ANY AT COMMAND IMMEDIATELY AFFECT MODEM OPERATION USE AT&W COMMAND TO SAVE CHANGES TO
COMSPHERE 3800Plus Modems Configure Branch The Configure branch consists of the following three levels: The Configure branch of the Top-Level menu contains all of the modem’s configuration options (straps) which determine how the modem operates. These configuration options are accessed by scrolling down and across various levels of the Configure branch. NOTE • Choose Function.
Configure Branch Editing and Saving a Configuration Option Select Async_Dial. The following example shows how to change the Remote Access Password using the DCP. (If you ever intend to access another 3800Plus Series modem via the Remote branch of the Top-Level menu, the Remote Access Password must be the same for both modems.
COMSPHERE 3800Plus Modems Select the F2 ( ) key to increment password values. Select a configuration area (Active (Saved), key. Press Customer 1, or Customer 2) by using the F1 or F2 to save the changes. RemAccssPasswrd NxtąĄ 00000000 F1 F2 Select the key to exit to the Top-Level menu or select the key to remain in the Configure branch. F3 Summary Press the position.
Configure Branch Configuration Tables DTE Interface The modem’s configuration options are arranged into eight groups based upon functionality: DTE Interface (Table 8-1), DTE Dialer (Table 8-2), Line Dialer (Table 8-3), Dial Line (Table 8-4), Leased Line (Table 8-5), V.42/MNP/Buffer (Table 8-6), Test (Table 8-7), and Misc (Table 8-8). The DTE Interface configuration options contain RS-232D (ITU-T V.
COMSPHERE 3800Plus Modems Table 8-1 (2 of 7) DTE Interface Configuration Options Sync DTE Rate:128000 Nxt 128000 115200 112000 96000 76800 72000 64000 57600 56000 48000 38400 28800 19200 14400 9600 4800 2400 1200 This configuration option only appears if SDC is enabled. Synchronous DTE Data Rate. Determines the bit rate of data transferred between the synchronous DTE and the modem during SDC operation. Data rates from 128,000 to 1200 bps are supported.
Configure Branch Table 8-1 (3 of 7) DTE Interface Configuration Options # Stop Bits: 1 Nxt 1 2 Number of Stop Bits. Selects 1 or 2 bits to signal the end of an asynchronous character. The factory default is 1. There is no AT command equivalent; AT prefix determines the number of stop bits via autobauding. DTR Action: Ignore Nxt Stndrd_RS232 Ignore CntrlsOnHook Off=ReloadStrp Off=CmdMode CntrlsTXMute Data Terminal Ready Action.
COMSPHERE 3800Plus Modems Table 8-1 (4 of 7) DTE Interface Configuration Options DSR Control: Forced_On Nxt Forced_On Stndrd_RS232 WinkWhenDisc Follows_DTR On_Early Delay_ToData DialBkToggle Data Data Set Ready Control. DSR is a signal from the modem to the DTE indicating the modem is connected and ready for operation. Forced On – Forces DSR output ON constantly. This is usually used for leased-line applications and when the DTE requires DSR to always be ON.
Configure Branch Table 8-1 (5 of 7) DTE Interface Configuration Options RTS Action: Ignore Nxt Ignore Stndrd_RS232 Sim_Cntl_Car Cntl_Car Request-to-Send Action. RTS is a signal from the DTE to the modem indicating the DTE has data to send to the modem. Ignore – Modem assumes RTS is always ON. Use this selection when the DTE does not provide RTS to the modem. Standard RS232 – Allows the DTE to control RTS to the modem in normal RS-232D operation. RTS must be ON for the DTE to transmit to the modem.
COMSPHERE 3800Plus Modems Table 8-1 (6 of 7) DTE Interface Configuration Options RTS/CTS Delay: 0 msec Nxt 0msec 10msec 50msec 150msec 600msec Request-to-Send/Clear-to-Send Delay. RTS/CTS Delay sets the delay time between the modem receiving RTS from the DTE and the modem sending CTS to the DTE.
Configure Branch Table 8-1 (7 of 7) DTE Interface Configuration Options TX Clock Source: Internal Nxt Internal External RXC_Loop Transmit Clock Source. Determines the source of timing for synchronous data transmitted from the DTE. Internal – The transmit data’s clock source is derived from the modem’s internal clock and output on Pin 15 (TXC) of the RS-232D interface. External – The transmit data’s clock source is provided by the DTE on Pin 24 (EXT) on the RS-232D interface.
COMSPHERE 3800Plus Modems DTE Dialer Table 8-2 shows each DTE Dialer configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line. Following this is a description of the configuration option, a description of the available selections, and any equivalent AT commands.
Configure Branch Table 8-2 (2 of 5) DTE Dialer Configuration Options *AT Escape Char: 043 ASCI Nxt 043 ASCI AT Escape Character. The escape sequence (+++) allows you to move back and forth between Command mode and Data mode. The ASCII value of the escape character (43 ASCII) can be set to any ASCII value from 0 ASCII to 255 ASCII. However, the escape character is disabled if a value greater than 127 ASCII is entered. When disabled, the call must be disconnected to return to Command mode.
COMSPHERE 3800Plus Modems Table 8-2 (3 of 5) DTE Dialer Configuration Options *Backspace Char: 008 ASCI Nxt ↑ 008 ASCI Backspace Character. Sets the character used to perform a backspace in Command mode. The factory default is 08 (ASCII backspace character). AT command equivalent is S-register S5=n. *Linefeed Char: 010 ASCI Nxt ↑ 010 ASCI Line Feed Character. Sets the character used to perform a line feed in Command mode for responses from the modem.
Configure Branch Table 8-2 (4 of 5) DTE Dialer Configuration Options *ResultCode Form: Words Nxt Words Numbers (1) Numbers (2) Result Codes Format. Controls whether or not result codes appear as words or as numeric codes. Some DTEs do not recognize Result Codes as words; therefore, numbers are required. The Numbers (2) format is required for some modem pooling applications. (For a list of Result Codes, refer to Appendix B.) The factory default is Words. AT command equivalent is Vn.
COMSPHERE 3800Plus Modems Table 8-2 (5 of 5) DTE Dialer Configuration Options *AT Cmnd Mode: Normal Nxt Normal No_ERROR NoStrapOrERR AT Command Mode. Determines how the modem responds to valid and invalid AT commands. NOTE: Since this configuration option affects AT commands, it cannot be changed by the AT&F command. However, it can be changed by selecting a factory preset configuration via the DCP. Normal – Allows normal operation of the AT command set.
Configure Branch Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. Table 8-3 shows each Line Dialer configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
COMSPHERE 3800Plus Modems Table 8-3 (2 of 5) Line Dialer Configuration Options BusyTone Detect: Enable Nxt Enable Disable Busy Tone Detect. Sets the modem to monitor for Busy Tone (Enable) or ignore Busy Tone (Disable). This configuration option is normally enabled; however, if the modem receives false busy tones, this configuration option can be disabled and the modem ignores all busy tones. The factory default is Enable. AT command equivalent is Xn.
Configure Branch Table 8-3 (3 of 5) Line Dialer Configuration Options Long Space Disc: Enable Nxt Enable Disable Long Space Disconnect. Determines the modem’s response to a continuous spacing condition sent from the remote modem when it goes on-hook. Issuing a long space is one method of disconnecting a call. NOTE: This configuration option is ignored when the modem operates in Synchronous mode or Dial Backup mode. Enable – Modem disconnects if it receives a continuous space from the DTE.
COMSPHERE 3800Plus Modems Table 8-3 (4 of 5) Line Dialer Configuration Options NoDataDiscTrig: TXD and RXD Nxt TXD and RXD TXD Only RXD Only TXD or RXD No Data Disconnect Trigger Signal. Works in conjunction with No Data Disconnect (\T), and determines whether Pin 2 (transmit data) or Pin 3 (receive data) of the modem’s RS-232 serial interface is monitored so that the modem can disconnect the call if there is no activity for a certain period of time.
Configure Branch Table 8-3 (5 of 5) Line Dialer Configuration Options DTR Auto Redial: Dir 1 Nxt Dir 1 Dirs1-2 Dirs 1-3 Dirs 1-4 Dirs 1-5 Dirs 1-6 Dirs 1-7 Dirs 1-8 Dirs 1-9 Dirs 1-10 DTR Auto Redial. Defines the number of directory locations the modem may access when prior dialing attempts fail. For example, the selection Dirs1-10 means that all ten directory locations may be tied. The default is directory location 1 only.
COMSPHERE 3800Plus Modems Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 8-4 shows each Dial Line configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
Configure Branch Table 8-4 (2 of 4) Dial Line Configuration Options Automode: Enable Nxt Enable Disable System 85 Automode. Allows the modem to automatically detect the remote modem’s modulation. Enable – The modem automatically adapts to the modulation scheme and line rate of the remote modem, and the VF line condition. However, the maximum data rate the modem uses is determined by the Dial Line Rate configuration option. Bell 103J protocol is used for data rates of 0–300 bps.
COMSPHERE 3800Plus Modems Table 8-4 (3 of 4) Dial Line Configuration Options Dial TX Level: Permissv(– 9) Nxt Permissv(– 9) –10 dBm –11 dBm –12 dBm –13 dBm –14 dBm –15 dBm –16 dBm –17 dBm –18 dBm –19 dBm –20 dBm –21 dBm –22 dBm –23 dBm –24 dBm –25 dBm –26 dBm –27 dBm –28 dBm –29 dBm –30 dBm –31 dBm –32 dBm ETC 1.0_Cell ETC 1.1_Cell Dial Transmit Level. Sets the power output level of the transmit signal over dial lines. Permissive (– 9 dBm) – The modem transmits data at approximately – 9 dBm.
Configure Branch Table 8-4 (4 of 4) Dial Line Configuration Options Proactive Retrain: Enable Nxt Enable Disable Proactive Retrain. When enabled, the dial line connection is monitored, and if the Signal to Noise Ratio drops 1.2 dB or more, the modem forces a retrain. This may prevent bit errors at higher rates over marginal lines. Disabling Proactive Retrain reduces the number of retrains while increasing the exposure to bit errors. NOTE: This configuration option is valid only for dial lines at the V.
COMSPHERE 3800Plus Modems Leased Line The Leased Line configuration group only appears if the modem is configured with the Sync Leased factory preset template. The Leased Line configuration options are used to configure the modem for operation over leased lines.
Configure Branch Table 8-5 (2 of 5) Leased Line Configuration Options *LeasedLine Rate: 33600(V34) Nxt 33600(V34) 31200(V34) 28800(V34) 26400(V34) 24000(V34) 21600(V34) 19200(V34) 16800(V34) 14400(V34) 12000(V34) 9600(V34) 7200(V34) 4800(V34) 2400(V34) - OR Nxt 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b) - OR Nxt 2400(V22bis) - OR Nxt 14400(V.33) 12000(V.33) 9600(V.29) 7200(V.29) 4800(V.29) Leased-Line Rate.
COMSPHERE 3800Plus Modems Table 8-5 (3 of 5) Leased Line Configuration Options *Leased TX Level: 0 Nxt 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 – 10 – 11 – 12 – 13 – 14 – 15 Leased Transmit Level. Selects the modem’s transmit power level over leased lines. The transmit output level can be selected in 1 dBm decrements from 0 dBm to –15 dBm. For V.34 operation over two-wire connections, do not set Leased TX Level to a value higher than –9 dBm. The factory default is 0 dBm.
Configure Branch Table 8-5 (4 of 5) Leased Line Configuration Options *Auto Redial Nxt Dir_1 Dirs_1-2 Dirs_1-3 Dirs_1-4 Dirs_1-5 Dirs_1-6 Dirs_1-7 Dirs_1-8 Dirs_1-9 Dirs_1-10 Auto Redial. Works in conjunction with the Bad Lines Auto Originate and Rate Auto Originate options. It allows repeated automatic dial backup attempts by specifying the range of directory locations that can be tried. The modem must be in Originate mode. Dir_1 – The modem will use only directory location 1 for automatic dial backups.
COMSPHERE 3800Plus Modems Table 8-5 (5 of 5) Leased Line Configuration Options Asymmetric Rate: Enable Nxt Enable Disable Asymmetric Rate. Controls rate symmetry when running V.34 modulation. (This configuration option does not appear unless V.34 modulation is selected.) Enable – The modem operates in asymmetric rate mode (the transmit and receive rates can be different) when running V.34 modulation. Asymmetric Rate must be enabled in both modems.
Configure Branch V.42/MNP/Buffer V.42/MNP/Buffer configuration options determine the type of error correction and flow control used by the modems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options have been selected. If the Async/Sync Mode configuration option is set for synchronous operation (see DTE Interface configuration options group), then the V.42/MNP/Buffer group does not appear on the LCD.
COMSPHERE 3800Plus Modems Table 8-6 (2 of 8) V.42/MNP/Buffer Configuration Options Sync Comp Mode: DirectMode Nxt DirectMode HDLC/SDLC This configuration option only appears if Async/Sync Mode is configured for Sync. Synchronous Compression Mode. Enables and disables synchronous data compression. DirectMode – Disables the Synchronous Data Compression mode. HDLC/SDLC – Enables the Synchronous Data Compression mode The AT command for Sync Comp Mode is #SCn.
Configure Branch Table 8-6 (3 of 8) V.42/MNP/Buffer Configuration Options SyncDTE CRC: Ignore Nxt Ignore CRC16 This configuration option only appears when the Async/Sync Mode configuration option is set to Sync, and Sync Comp Mode configuration option is not set to DirectMode. Synchronous DTE CRC. Determines whether the CRC of the DTE frame is transmitted from modem to modem. Ignore – No assumption is made about the CRC type. The CRC is transmitted along with the other data in the frame.
COMSPHERE 3800Plus Modems Table 8-6 (4 of 8) V.42/MNP/Buffer Configuration Options V42bis Compress: Enable Nxt Enable Disable This configuration option only appears when Async/Sync Mode is configured for Async. V.42bis Compression. Enables or disables V.42bis data compression. Enable – Data compression operates in both the transmit and receive directions. This is the recommended setting for all applications. Disable – V.42bis data compression is disabled. This is rarely needed because V.
Configure Branch Table 8-6 (5 of 8) V.42/MNP/Buffer Configuration Options EC Fallbck Char: 013 ASCI Nxt 013 ASCI This configuration option only appears when Async/Sync Mode is configured for Async. Error Control Fallback Character. This configuration option allows you to enter the ASCII value of the error control fallback character. This provides the remote modem with the ability to end the error control link negotiating (handshaking) sequence by sending this character.
COMSPHERE 3800Plus Modems Table 8-6 (6 of 8) V.42/MNP/Buffer Configuration Options XON/XOFF Psthru: Disable Nxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async. XON/XOFF Passthrough. Considers an XON/XOFF character as data and passes it on to the remote modem. In this case, the DTE at one end of the communications link can send flow control characters to the other DTE. This is also known as DTE to DTE flow control.
Configure Branch Table 8-6 (7 of 8) V.42/MNP/Buffer Configuration Options Send Break Cntl: Data-First Nxt Data-First Break-First This configuration option only appears when Async/Sync Mode is configured for Async. Send Break Control. Determines what is sent from the modem first, data or break if a break sequence is sent from the DTE. Data First (Nonexpedited) – A break is treated as a data character and is sent in the order it was received. This is also known as Nonexpedited mode.
COMSPHERE 3800Plus Modems Table 8-6 (8 of 8) V.42/MNP/Buffer Configuration Options Max Frame Size: 256 Nxt 256 192 128 64 32 16 This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is not configured for BufferMode or DirectMode, or when Async/Sync Mode is configured for Sync and Sync Comp Mode is not configured for DirectMode. For cellular applications, at least one of the modems should be set to 32. AT command equivalent is \An.
Configure Branch Test The Test configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. Table 8-7 shows each Test configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
COMSPHERE 3800Plus Modems Table 8-7 (2 of 2) Test Configuration Options V54 Address: Disable Nxt Disable (Address Values) V.54 Address. Determines which remote 3800Plus modem is placed into a remote loopback test. This can be either a remote digital loopback or local analog loopback. This type of addressing can be used for extended data circuits (tail circuits). Disable – This is used for normal point-to-point dial and leased-line networks.
Configure Branch Misc The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. Table 8-8 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem is just being installed) shown following the colon (:) on the first line and with all available selections listed on the second line.
COMSPHERE 3800Plus Modems Table 8-8 (2 of 3) Miscellaneous Configuration Options Speaker Volume: Medium Nxt Medium Low High Speaker Volume. Controls the level of speaker volume. The factory default is Medium. NOTE: Speaker Volume can also be temporarily set using the Control branch; however, a reset or power cycle will restore the modem to the Speaker Control and Speaker Volume configuration option settings. AT command equivalent is Ln. Access frm Remt: Enable Nxt Enable Disable Access from Remote.
Configure Branch Table 8-8 (3 of 3) Miscellaneous Configuration Options NMS_Call_Msgs: CallCnct&Prg Nxt CallCnct&Prg Disable CallCnctOnly CallProgOnly NMS Call Messages. Determines if modem status and/or call summary information is sent to the 6700 Series NMS. The modem can itemize status, such as CallProgress messages, or it can report a summary of activity, such as Call Connect messages, to the NMS.
COMSPHERE 3800Plus Modems Security Configuration Options The Security Configuration Options group allows you to view and set dial access security parameters. This group appears only if the dial access security feature has been installed. Table 8-9 shows each Security configuration option as it appears on the LCD. The factory default value is shown after the colon (:) on the first line; all available selections are listed on the second line. After this, a description of the each selection follows.
Configure Branch Table 8-9 (2 of 2) Security Configuration Options *DTE_PW_BkSpChar: 008 Nxt 008 DTE Password Backspace Character. Sets the character that is used to perform a backspace in security mode. This character can be set to any ASCII value from 0 to 127. The factory default is 08 (ASCII backspace). Get_User_ID: Disable Nxt Disable Enable Get User ID. Determines whether the remote user is prompted for an NMS-defined logon ID once the modems have completed initial handshaking.
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Control Branch 9 Overview Control Branch The Control branch of the Top-Level menu allows you to manage hardware and software functions, such as speaker volume, reset, busy out, and firmware download. The 3811Plus modem has the additional hardware function, Service Line. To access Control from the Top-Level menu, make the following selections: Idle : 28.8 Control F1 Press the 3980-A2-GB30-40 October 1998 < Remote F2 F3 key until Control appears. Select Control.
COMSPHERE 3800Plus Modems Speaker Reset Speaker allows you to make temporary adjustments to the modem’s speaker volume. Upon a reset, speaker volume returns to its configured setting. For more information on speaker settings, refer to the Misc section in Chapter 8, Configure Branch. Reset causes the modem to stop operation and perform a complete program restart. The modem begins the power-up test sequence that ends with the Top-Level menu displayed on the LCD.
Control Branch Make Busy/Remove Make Busy AT Command Equivalent The Make Busy function forces the modem off-hook so it cannot answer a call. This is often used with PBX systems to permit the busy out of a PBX port for rotary or hunt groups. The AT command for Remove Make Busy is H or H0. The AT command for Make Busy is H1.
COMSPHERE 3800Plus Modems Download Code To access Download Code from the Control branch, make the following selections: The Download Code function sets parameters within the modem when transferring firmware to a remote modem or when receiving firmware upgrades from a locally attached PC-based controller. The latter should only be performed by customer service personnel. Control : Download_Code There are two selections under Download Code: Clone to Remote and To Local via DTE.
Control Branch If unsuccessful, the modem remains in the Download Transfer mode. The LCD’s top line displays RemClone Failed and the bottom line displays one of the following messages: WARNING Pressing any function key now begins the transfer to the remote modem. This process takes the communications link out of service for several minutes depending upon the data rate of the link (28,800 bps = 5 minutes; 14,400 bps = 10 minutes; 9600 bps = 15 minutes; 4800 bps = 30 minutes).
COMSPHERE 3800Plus Modems As data banks are transferred, the local and remote LCD’s bottom line displays the status of the download process, and the number of records sent versus the total number of records for that bank. However, a DTE is not required. The download begins without any operator action. When the download begins, the DCP displays download status messages with the data bank number, current block being loaded, and the total number of blocks. There are two data banks.
Remote Branch 10 Overview Remote Branch The Remote branch of the Top-Level menu allows you to control the remote modem’s DCP using the local modem’s DCP. This allows you to change configuration options and control test functions in a remote modem. Remote DCP access is only available when using V.34, V.32terbo, V.32bis, or V.32 modulation schemes. The following conditions must be met before using the Remote branch: • A connection using either the dial network or leased lines must be established.
COMSPHERE 3800Plus Modems Remote DCP access is accomplished using either the primary or secondary channel (if available) of the VF line. Using the primary channel gives a much faster response time due to the higher data rate, but it also interrupts data flow because primary data is stopped when Remote mode is active. Once Remote mode is terminated, the primary channel is automatically made available to data transmission.
Remote Branch The Top-Level menu of the remote 3800Plus modem is similar to the local 3800Plus modem with the following exceptions: The following conditions can cause Remote branch access to fail: • Change Directory is the only function available under the Call Setup branch. • Self and Local Analog Loop do not appear under the Test branch when using the secondary channel. When using the primary channel, the Test branch does not appear. • In the Control branch, Make Busy is not available.
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Security Overview Dial Access Security is an optional feature that allows you to control who has access to your 3800Plus modem and ultimately your host DTE. NOTE This chapter supports the operation of dial access security for COMSPHERE 3800Plus modems. This chapter is self-supporting and can be removed to prevent unwanted knowledge of dial access security operation.
COMSPHERE 3800Plus Modems Originate Access Security VF-Side Passwords Originate Access lets you control who can originate a call from a local modem via the AT command set. This is useful in LAN and modem pooling applications. With Originate Access security, a local user’s password is embedded in the AT dial command. If the password is valid, the user can dial out using this modem. VF-side password entry occurs between modems prior to connecting.
Security DTE-Side Passwords NOTE DTE-side password entry requires the originating user to supply a valid password via his DTE. This method of password entry occurs after the modems’ training sequence, but before normal connection. The modems must be configured for asynchronous operation to use this type of security. While pulse dial can be used to originate the call, DTMF tones must be used for the password. This can be accomplished by using the P and T modifiers appropriately.
COMSPHERE 3800Plus Modems Security Branch The Security branch of the Top-Level menu allows you to change and save parameters that are critical to the dial access security password database. This database is a collection of passwords and their associated parameters that determine how the modems control password access. Most of the functions within this branch are protected by an Administrative Password. Once the correct password is entered, these security functions appear on the modem’s LCD.
Security EditPasswdTable To enter your Administrative Password from Set_Access_Ctrl, make the following selections: Security Set_Access_Ctrl F1 F2 The Password Table is the modem’s security database. It contains all essential information for each password stored in the modem’s nonvolatile memory. The information associated with each password is known as a record. Records are identified by an index which is a numeric name for a single record. A password’s record is retrieved by entering its index.
COMSPHERE 3800Plus Modems Keep the following in mind when scrolling down Edit Password Table: Select Index Entą Ą" 0001 F1 F2 • The current function and index are displayed on the LCD’s top line. F3 • The LCD’s bottom line displays Nxt and all selections available for the displayed security option. Select Index appears. • Nxt indicates that more options are available by scrolling down. It also indicates that the value displayed on the LCD is the current setting.
Security Table 11-1 Edit Password Table Group Options PsWdType xxxx Nxt Cleared DTE Entry VF_Entry VF_plus_DTE Password Type. Indicates whether this index location is configured for VF-side password, DTE-side password, or both. Cleared displays for an index location that contains no valid entry. Note that this option only identifies the type of password used. For proper operation, the type of password selected must be consistent with the type of security used.
COMSPHERE 3800Plus Modems Set Answer Sec To access Set_Answer_Sec from Set Access Ctrl, make the following selections: Set Answer Security determines if dial access security is enabled or disabled. This method of inbound security is configured in the answering modem. Although this also appears under the Security Configuration Option group, it can only be changed from the Set Answer Sec LCD display in the Security branch. Press the key until Set_Answer_Sec appears. Select Set_Answer_Sec.
Security Set Orig Sec To access Set_Orig_Sec from Set Access Ctrl, make the following selections: Set Originate Security controls whether or not the modem can originate a call using AT commands when the dial access security feature is installed. This method of outbound security only applies to modems originating a call. Set Access Ctrl Set_Orig_Sec F1 Press the F2 F3 key until Set_Orig_Sec appears. Select Set_Orig_Sec. Table 11-3 describes the settings of the Set Originate Security group option.
COMSPHERE 3800Plus Modems Set Admin PsWd Reset Security Set Administrative Password is used to change the Administrative Password value. The Administrative Password is an 8-digit decimal number that allows authorized users to enter the Access Security Control function. Reset Security is the second major function within the Security branch of the Top-Level menu. It erases all contents of the security database table and resets all index locations to Cleared.
Security Reset Security Erase_All_PassWd F1 F2 A VF-side password can be entered with the AT dial command. The following examples illustrate two ways to enter a VF-side password: < ATDT5551234W12345678# F3 or To reset security, press appears on the LCD. ATDP5551234T@12345678# until Erase_All_PassWd Select Erase_All_PassWd. The entire security database is erased and the Administrative Password defaults to the Reset Default password value.
COMSPHERE 3800Plus Modems Some experimentation may be necessary to determine the number of pauses necessary for your call. Database Table Examples The following examples illustrate possible database tables in which the password type is configured for VF Entry, DTE Entry or a combination of VF, DTE, and VF plus DTE Entry. These tables are shown for illustrative purposes only. Passwords shown are not representative of good password selections.
Security Table 11-5 is an example of a database table with passwords configured for DTE Entry only. This type of password is entered via the originating user’s DTE. Table 11-6 is an example of a security database table that uses a mixture of VF and DTE passwords.
COMSPHERE 3800Plus Modems Table 11-7 is an example of a security database table that uses paired VF and DTE passwords for use in VF_w/_DTE answer security mode.
Fax Operation 12 • You must have configured your modem according to the specifications of your fax software manual. For example: Overview The procedures for sending and receiving facsimile documents with your modem depend on the fax software you use. This chapter does not contain specific procedures, but rather information that may make it easier for you to use the documentation that came with your fax software. — Some fax software requires that the modem have Auto-Answer disabled.
COMSPHERE 3800Plus Modems Your fax software uses AT commands to tell the modem what to do. These commands, and the replies your modem makes (such as “OK”) may be displayed on your computer terminal during fax operation, but this depends on your software. You do not have to issue AT commands yourself, unless you use AT commands to configure the modem. For more information about fax operation, see the manual that came with your fax software.
AT Command Set and S-Registers 13 Overview Escape Sequence and Escape Guard Time The AT command set provides an alternative method to the front panel for entering commands that control the operation and configuration of the 3800Plus modems. AT commands are issued from an asynchronous DTE (such as a personal computer). This chapter explains how to use AT commands and lists the modifiers for all AT commands supported by the 3800Plus modems.
COMSPHERE 3800Plus Modems • All commands (except A/ (repeat last command) and +++) must begin with the characters AT and end by pressing the Enter key. The AT (or at) prefix clears the command buffer and matches the modem speed and parity to that of the DTE. Commands can be upper- or lowercase, but the modem will not recognize mixed case prefixes (At or aT). AT Command List • Commands can be entered one at a time or in strings. Strings can have up to 40 characters after the AT prefix.
AT Command Set and S-Registers Table 13-1 (1 of 15) 3800Plus AT Commands Description AT Command Front Panel Branch A/ Repeat Last Command Re-executes last command string. (Not to be preceded with AT or followed by pressing the Return key.) A Answer Mode Goes off-hook and attempts to establish a connection without waiting for a ring. None Bn ITU-T/Bell Mode Determines the protocol used if the dial-line rate is set to 300 or 1200 bps. It has no effect if the rate is set to another value.
COMSPHERE 3800Plus Modems Table 13-1 (2 of 15) 3800Plus AT Commands AT Command Dn Description Dial Begins the dialing sequence. The dial string n (modifiers and telephone number) is entered after the D command. Any digit 0–9, * , # , A, B, C, D, may be dialed as a DTMF tone. Only the digits 0–9 can be dialed in Pulse Dial mode. Front Panel Branch None If any character is received from the DTE before the modem goes online, the dial sequence is aborted. This is known as any-key abort.
AT Command Set and S-Registers Table 13-1 (3 of 15) 3800Plus AT Commands AT Command DS=n Description Dial Stored Number Dials the number stored in Location n (1–10). (To store a telephone number, refer to the &Zn=x command.) Front Panel Branch Call Setup\Dial\ Dial Directory: If any character is received from the DTE before the modem goes online, the dial sequence is aborted. This is known as any-key abort. En Command Character Echo E0 Disables echo to the DTE. E1 Enables echo to the DTE. Configure\Ed
COMSPHERE 3800Plus Modems Table 13-1 (4 of 15) 3800Plus AT Commands AT Command Description Front Panel Branch P Pulse Dial Sets the modem for pulse dial mode. See the Dn command. Configure\Edit\ Line Dialer Qn Result Codes Q0 Enables modem to send result codes to the DTE. Q1 Disables modem from sending result codes to the DTE. Q2 Enables in Originate mode only for modem to send result codes to the DTE. Required for most UNIX applications. Configure\Edit\ DTE Dialer Sr= n Change S-Register Changes
AT Command Set and S-Registers Table 13-1 (5 of 15) 3800Plus AT Commands AT Command Xn Description Front Panel Branch Extended Result Code, Dial Tone Detect, and Busy Tone Detect Configuration Options Dial Busy Extended Tone Tone Result Code Detect Detect X0 X1 X2 X3 X4 X5 X6 X7 Disable Enable Enable Enable Enable Add/EC Add/V42,MNP Use DTE Rate Disable Disable Enable Disable Enable Enable Enable Enable Disable Disable Disable Enable Enable Enable Enable Enable Extended Result Code: Configure\Edit\D
COMSPHERE 3800Plus Modems Table 13-1 (6 of 15) 3800Plus AT Commands AT Command Description Front Panel Branch +FCLASS=n Service Class Selection Normally set by fax software, Service Class Selection determines the fax protocol. The command is sent to the modem in the format +FCLASS=n, where n can be set to one of three values: 0=Data 1=Class 1 Fax (EIA 578) 2=Class 2 Fax (EIA/TIA SP-2388 dated 20 August 1990) In the format +FCLASS?, the +FCLASS command returns the current Service Class: 0, 1, or 2.
AT Command Set and S-Registers Table 13-1 (7 of 15) 3800Plus AT Commands AT Command &Fn Description Select Factory Default Configuration Options Loads factory configuration options into Active (Operating) area. &F0 Async Dial &F1 Sync Dial &F2 Sync Leased: Answer &F3 UNIX Dial &F4 Sync Leased: Originate &F5 Cellular (Mobile) &F6 Cellular (PSTN) The &F5 and &F6 commands are available only if ETC is installed.
COMSPHERE 3800Plus Modems Table 13-1 (8 of 15) 3800Plus AT Commands AT Command &I Description Front Panel Branch Dial Transmit Level Configure\Edit\Dial Line When Dial Transmit Level Type is set to Permissive, &In sets Dial Transmit Level to a value between –10 and –32 dBm. &I99 and &I100 are available only if Enhanced Throughput Cellular (ETC) is installed and cause the level to be varied automatically according to conditions for ETC operation.
AT Command Set and S-Registers Table 13-1 (9 of 15) 3800Plus AT Commands AT Command &Mn and &Qn Description Async/Sync Mode and DTE Dialer Type &M0, &Q0 Modem operates in Asynchronous mode and uses AT Command protocol. &M1, &Q1 Modem operates in Synchronous mode and uses AT Command protocol. &M2, &Q2 Modem operates in Synchronous mode and dials telephone number stored in directory location 1 when DTR signal turns Off and then ON. Front Panel Branch Configure\Edit\ DTE Dialer &M3, &Q3 Modem operates in
COMSPHERE 3800Plus Modems Table 13-1 (10 of 15) 3800Plus AT Commands AT Command &Tn Description Tests &T0 &T1 &T2 &T3 &T4 &T5 &T6 &T7 &T8 &T9 Abort. Stops any test in progress. Local Analog Loop. Pattern. Transmits and receives a 511 Bit Error Rate Test (BERT). Local Digital Loopback test. Enables Receive Remote Loopback Response configuration option. Disables Receive Remote Loopback Response configuration option. Remote Digital Loopback test. Remote Digital Loopback with Pattern.
AT Command Set and S-Registers Table 13-1 (11 of 15) 3800Plus AT Commands AT Command Description Front Panel Branch \An Error Control Maximum Frame Size \A0 64 \A1 128 \A2 192 \A3 256 \A4 32 \A5 16 Configure\Edit\ V42/MNP/Buffer \Cn Error Control Negotiate Buffer \C0 Disable. \C1 Enable. \C2 Disables and switches modem to Buffer mode. Configure\Edit\ V42/MNP/Buffer \Dn CTS Control \D0 Forced On. Forces CTS to always ON. \D1 Standard RS232. \D2 Wink When Disconnect.
COMSPHERE 3800Plus Modems Table 13-1 (12 of 15) 3800Plus AT Commands AT Command \Qn Description Flow Control of DTE, Flow Control of Modem \Q0 \Q1 \Q2 \Q3 \Q4 \Q5 \Q6 Flow Control of DTE Flow Control of Modem Disable XON/XOFF CTS to DTE CTS to DTE XON/XOFF Disable Disable Disable XON/XOFF Disable RTS to Mdm Disable XON/XOFF RTS to Mdm Front Panel Branch Configure\Edit\ V42/MNP/Buffer \Tn No Data Disconnect Timer \T0 Disable. \Tn Where n is a value from 1 to 255 in 1-minute increments. Configure\E
AT Command Set and S-Registers Table 13-1 (13 of 15) 3800Plus AT Commands AT Command %Bn, %BLn Description Front Panel Branch Modulation/Data Rate Sets the modulation and maximum dial VF rate. The same function can be performed with S-register S41; the %B and %BL commands are provided for compatibility with environments where those commands are used. Configure\Edit\ Dial Line The %B300 and %B1200 commands work in conjunction with the B (ITU-T/ Bell Mode) command to determine modulation.
COMSPHERE 3800Plus Modems Table 13-1 (14 of 15) 3800Plus AT Commands AT Command %R Description Async DTE Rate Sets the DTE rate for Asynchronous mode. This configuration option has no effect in Sync or Async Direct modes, where the DTE rate always equals the VF rate. Front Panel Branch Configure\Edit\ DTE Interface %Rn must be the last command in a command string. The %Rn command does not disable autobauding.
AT Command Set and S-Registers Table 13-1 (15 of 15) 3800Plus AT Commands AT Command #SCn Description Sync Comp Mode Enables and disables synchronous data compression. #SC0 #SC1 Front Panel Branch Configure\Edit\ V42/MNP/Buffer Disable Synchronous Data Compression mode. Enable Synchronous Data Compression mode. The factory setting is Disable. IHn V.42bis Compression IH0 Disable. IH1 Transmit only. (Not available from DCP.) IH2 Receive only. (Not available from DCP.) IH3 Transmit and Receive.
COMSPHERE 3800Plus Modems S-Register List S-Register Format S-registers affect the operating parameters of 3800Plus modems. S-registers are only applicable when the DTE Dialer Type configuration option is set for AT. (See &Mn command.) S-registers can be displayed and/or modified when the modem is in Command mode. To display the value of an S-register, issue the following command: Table 13-2 lists all S-registers supported by 3800Plus modems. The first column lists the S-register.
AT Command Set and S-Registers Table 13-2 (2 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S4 Line Feed Character Register determines ASCII value used as the line feed character. Enter a value from 0–127 for the line feed character. Factory setting is 10 (ASCII carriage return or line feed). Configure\Edit\ DTE Dialer S5 Backspace Character Register determines ASCII value used as the backspace (Backspace key).
COMSPHERE 3800Plus Modems Table 13-2 (3 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S14 Asymmetric Rate Mode – Dial Line Register determines whether VF rates for transmitting and receiving are identical when using V.34 modulation. Enabling the function permits the two rates to be different. Register has the following values: 0=Enable 1=Disable Factory setting is Enable. Configure\Edit\ Dial Line S15 Asymmetric Rate Mode – Leased Line Register determines whether VF rates for
AT Command Set and S-Registers Table 13-2 (4 of 15) 3800Plus S-Registers AT Command S28 Description SDC Negotiation Controls negotiation between two modems attempting to connect using SDC. Front Panel Branch Configure\Edit\ V42/MNP/Buffer Register has the following values: 0 = LAPM_Buffer 1 = LAPM_Discon The factory setting is LAPM_Buffer. S29 SDC Idle Fill Determines whether the modem uses an HDLC flag or mark to fill the time between DTE frame transfers. Configure\Edit\ V42/MNP/Buffer Register has
COMSPHERE 3800Plus Modems Table 13-2 (5 of 15) 3800Plus S-Registers AT Command S32 Description SyncDTE CRC Determines whether the CRC of the DTE frame is transmitted from modem to modem. Front Panel Branch Configure\Edit\ V42/MNP/Buffer Register has the following values: 0 = Ignore 1 = CRC16 The factory setting is Ignore. S33 Buffer Size In Buffer Mode Limits the amount of data buffered during Buffer Mode operation.
AT Command Set and S-Registers Table 13-2 (6 of 15) 3800Plus S-Registers AT Command S37 Description DTR Auto Redial DTR Auto Redial allows repeated automatic dial backup attempts by specifying the range of Directory Locations that can be tried. A redial attempt is made in response to a bad phone number, a busy signal, no answer, or no quiet answer. The modem must be in Originate mode.
COMSPHERE 3800Plus Modems Table 13-2 (7 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S41 Dial-Line Rate Register determines the modem’s data rate and modulation scheme for operation on dial lines. Register has the following values: 1=14,400 (V.32bis) 2=12,000 (V.32bis) 3=9600 (V.32bis/V32) 4=7200 (V.32bis) 5=4800 (V.32bis/V.32) 6=2400 (V.22bis) 7=1200 (V.22) 8=1200 (212A) 10=0–300 (V21) 11=0–300 (103J) 20=19,200 (V.32terbo) 21=16,800 (V.32terbo) 27=33,600 (V.34) 28=31,200 (V.
AT Command Set and S-Registers Table 13-2 (8 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S44 Leased-Line Rate Register determines the modem’s data rate and modulation scheme for operation on either 2-wire or 4-wire leased lines in either Answer or Originate mode. Register has the following values: 0, 1=14,400 (V.32bis) 2=12,000 (V.32bis) 3=9600 (V.32bis) 4=7200 (V.32bis) 5=4800 (V.32bis) 6=2400 (V.22bis) 11=14,400 (V.33) 12=12,000 (V.33) 13 =9600 (V.29) 14=7200 (V.
COMSPHERE 3800Plus Modems Table 13-2 (9 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S47 Auto Dial Standby Register determines if the modem performs an automatic dial standby if in Dial Backup mode. Register has the following values: 0=Disable 1=15 minutes 2=1 hour 3=4 hours 255=Test(2min) Factory setting is Disable. Configure\Edit\ Leased Line S48 Leased-Line Carrier On Level Register determines if the modem disconnects if the carrier signal on leased lines falls below – 26
AT Command Set and S-Registers Table 13-2 (10 of 15) 3800Plus S-Registers AT Command Description Front Panel Branch S53 V.54 Address Identifies the address of the modem to be placed in a loopback test. Register has the following values: 0 =Disable 1–34 =Modem address Factory setting is Disable. Configure\Edit\Tests S54 V.54 Device Type Identifies where the modem is physically located in the network. Register has the following values: 0=Peripheral 1=Intermediate Factory setting is Peripheral.
COMSPHERE 3800Plus Modems Table 13-2 (11 of 15) 3800Plus S-Registers AT Command S62 Description V.25bis Coding Register identifies to the modem the type of coding used by the DTE while in V.25bis mode. Register has the following values: 0=ASCII 1=EBCDIC Front Panel Branch Configure\Edit\ DTE Dialer Factory setting is ASCII. S63 V.25bis Idle Character Register identifies to the modem the type of idle fill used by the DTE while in V.25bis mode. Register has the following values: 0=Mark 1=Flag Configure\
AT Command Set and S-Registers Table 13-2 (12 of 15) 3800Plus S-Registers AT Command S74 Description Network Position Identification Register identifies each modem as either a control or tributary modem. Register has the following values: 0=Tributary 1=Control Front Panel Branch Configure\Edit\Misc Factory setting is Tributary for the 3810Plus. Factory setting is Control for the 3811Plus. S75 Network Management Address Register determines the modem’s network address.
COMSPHERE 3800Plus Modems Table 13-2 (13 of 15) 3800Plus S-Registers AT Command S80 Description No Data Disconnect Trigger Signal Register determines whether Pin 2 (transmit data) or Pin 3 (receive data) of the modem’s RS-232 serial interface is monitored so that the modem can disconnect the call if there is no activity for a certain period. (See the \T command.) Register has the following values: 0=Transmit or Receive 1=Transmit only 2=Receive only 3=Transmit and Receive Front Panel Branch Configure\Edi
AT Command Set and S-Registers Table 13-2 (14 of 15) 3800Plus S-Registers AT Command S88 Description Straps When Disconnected Register determines whether the Active(Operating) area is reloaded upon a disconnect. Register has the following values: 0 (or 231)=No Change 1 (or 232)=Reload 2 (or 233)=Reload with No AT Change Front Panel Branch Configure\Edit\Misc NOTE: Reload with No AT Change can be saved only if the save command (&W) follows the S88=2 command on the same command line.
COMSPHERE 3800Plus Modems Table 13-2 (15 of 15) 3800Plus S-Registers AT Command S92 Description V.29 Train On Data Register determines whether the modem must receive a standard V.29 training sequence in order to enter data mode (Disable) or whether it should use the received data mode for training (Enable). Effective only if the V.29 feature is installed and V.29 is selected for the leased-line rate. Register has the following values: 0=Disable 1=Enable Front Panel Branch Configure\Edit Leased Line Fact
Menu Tree A Overview The following pages hold graphic representations of the general menu structure of the front panel or SDCP displays. The model, installed features, and configuration options all may affect what is actually displayed at each level of the menus.
COMSPHERE 3800Plus Modems Displays current status of modem along with data rate and error control mode. “Status” to next page Call_Setup Dial Answer Disconnect Status Test Change_Directory Dial_Standby or Return_to_Dial VF DTE Identity Options LSD TX RX DTR DSR Tst TXD RXD RTS CTS Ser# No Signal SigQual Mod # RcvLev FRev Sig/Noise HPt# NearEcho FPt# FarEcho FarEchDel EchoFreqOff Directory Locations 1 – 10 SDC Record Display Clear Does not appear in Remote Mode.
Menu Tree from previous page to next page Configure Ld EditArea frm: Activ (Operating) Customer2 Factory Customer1 Async_Dial Active (Saved) Sync_Leased Sync_Dial Cellular (PSTN) UNIX_Dial Choose Mode Answer Cellular (Mobile) Originate Choose Function Edit Save Active (Saved) Customer1 Customer2 from previous page Leased_Line Leased Mode Modulation LeasedLine Rate Autorate Leased TX Level Bad Ln Auto Orig Rate Auto Orig Auto Redial AutoDialStandby CarrierOn Level V.
COMSPHERE 3800Plus Modems from previous page Control Remote Secondary Security Prim (data blckd) (ExitRem appears instead of Remote when using Remote Mode) Set_Access_Ctrl Reset_Security (Admin Password?) EditPassWdTable Set_Orig_Secur Set_Answer_Sec Speaker Make_Busy or RemoveMakeBusy Reset Set_Admin_PsWd Download Code Service_Line or DiscServLine Does not appear in Remote Mode. (Rem_Digital_Loop, Loc_Digital_Loop, and Pattern appear if the secondary channel is used.
Result Codes B Overview Table B-1 lists all the result codes 3800Plus modems may send to the DTE. Result codes can be numeric or verbal, terse or extended. See the Qn, Vn, and Xn commands in Chapter 13, AT Command Set and S-Registers for more information.
COMSPHERE 3800Plus Modems Table B-1 (2 of 3) Result Codes Numbers (1) Numbers (2) Word Description *Appears when the Extended Result Codes configuration option is enabled. **Appears when the Extended Result Codes configuration option is set for Use_DTE_Rate. This displays the DTE data rate instead of the line rate.
Result Codes Table B-1 (3 of 3) Result Codes Numbers (1) Numbers (2) Word Description 43 43 CONNECT 21600/ EC*** Connection at 21,600 bps with error control 44 44 CONNECT 24000/ EC*** Connection at 24,000 bps with error control 45 45 CONNECT 26400/ EC*** Connection at 26,400 bps with error control 46 46 CONNECT 28800/ EC*** Connection at 28,800 bps with error control 47 47 CONNECT 31200/ EC*** Connection at 31,200 bps with error control 48 48 CONNECT 33600/ EC*** Connection at 33
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Troubleshooting Overview Appendix B, Result Codes, points out basic problems that can occur when operating a 3800Plus modem. Use Tables C-1 through C-6 to check out these problems. If you are having data communication difficulties, such as C periodic character loss, random errors, or constant format errors, use the loopback tests described in Chapter 7, Test Branch. With these tests you can usually isolate the fault in your system by using the process of elimination.
COMSPHERE 3800Plus Modems Table C-2 Modem – DTE Connection Symptom Modem does not accept or echo back AT commands Action Verify that the cable between the Async port of the DTE and the modem is a standard RS-232 cable. If the cable is bad, replace it. (Null modem cables, also known as crossover cables, do not work in this application.) Verify that the Command Echo Character configuration option is enabled.
Troubleshooting Table C-3 (2 of 2) Modem – VF Connection Symptom Action Modem goes off-hook, answers, but does not connect Perform a Local Analog Loopback test and verify that data entered at the DTE is echoed back to the DTE. Verify that the originating modem is compatible. Verify that originating modem recognizes your modem’s answer tone. Verify that originating modem supports your modem’s modulation schemes. The 3800Plus modem recognizes ITU-T V.34, V.32terbo, ITU-T V.32bis, V.32, V.22bis, V.22, V.
COMSPHERE 3800Plus Modems Table C-4 Online Operation Symptom Action Data scrambled Verify that the character format (data bits, parity, and stop bits) is set to the same value in both modems. Missing data during a transfer Verify that you are using the same method of flow control for both the modem and the DTE. If using XON/XOFF flow control, verify that the modem’s parity matches the DTE’s parity.
Technical Specifications D Table D-1 shows the technical specifications for 3800Plus modems. Table D-1 (1 of 3) Technical Specifications for COMSPHERE 3800Plus Modems Criteria Specifications APPROVALS (110 Vac, 60 Hz only) FCC Part 15 Class A FCC Part 68 Registration Number: (See label on modem.) UL 3810Plus (Model 3980) Listed to UL 1950 3811Plus (Model 3981) Recognized to UL 1950 with COMSPHERE 3000 Series Carrier CSA 3810Plus (Model 3980) Certified to CSA C22.2 No.
COMSPHERE 3800Plus Modems Table D-1 (2 of 3) Technical Specifications for COMSPHERE 3800Plus Modems Specifications COMPATIBILITY Criteria DIAL-LINE MODULATIONS ITU-T V.34 (33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400,12,000, 9600, 7200, 4800, 2400 bps) Proprietary V.32terbo (19,200, 16,800 bps) ITU-T V.32bis (14,400, 12,000, 9600, 7200, 4800 bps) ITU-T V.32 (9600, 4800 bps) ITU-T V.22bis (2400 bps) ITU-T V.22 (1200 bps) ITU-T V.
Technical Specifications Table D-1 (3 of 3) Technical Specifications for COMSPHERE 3800Plus Modems Specifications Criteria AC POWER REQUIREMENTS 3810Plus 110 Vac, 50 to 60 Hz POWER CONSUMPTION 3810Plus 8 watts (typical, including power supply, speaker off) 3811Plus 6 watts (typical, each card) Speaker consumption is approximately 1 watt at high volume. HEAT DISSIPATION 3810Plus 27.3 BTU/Hr (typical, including power supply, speaker off) 3811Plus 20.
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Pin Assignments E Appendix E lists the pin assignments for EIA-232-D and VF TELCO interfaces, and shows the wiring diagram for an 8-position to 6-position cable.
COMSPHERE 3800Plus Modems EIA-232-D Pin Assignments Table E-1 lists the EIA-232-D pin assignments for the modem.
Pin Assignments VF Connector Pin Assignments Table E-2 lists the connector pin assignments for 3810Plus modular jacks and the pin assignments for the TELCO jacks (Figure E-1). Table E-2 VF Connector Pin Assignments Type of Telco Jack Pin Leased Dial/Leased RJ11 JM8 1 4-Wire: TX 2-Wire: TX/RX Ring 1 2 4-Wire: TX 2-Wire: TX/RX Tip 1 3 4 Ring/ 2-Wire Leased Ring 5 Tip/ 2-wire Leased Tip 6 7 4-Wire: RX Tip 8 4-Wire: RX Ring Figure E-1.
COMSPHERE 3800Plus Modems JM8 to RJ11 Crossover Cable For 2-wire leased-line connections to a JM8 network interface, an 8-position to 6-position crossover cable (see Figure E-2) must be used according to the following FCC requirements: ‘‘The RJ series of jacks should not be used for connecting data equipment to nonswitched private line networks – specifically, the service equivalents of the pre-divestiture Series 3002 (Category II, Tariff #260) service.
ITU-T V.25bis Dialing Commands and Responses F Overview Call Request with Number Provided (CRN) ITU-T V.25bis is an international dialing protocol that permits direct and stored number dialing using DTEs in either Asynchronous, Bisynchronous, or HDLC operating mode. The 3800Plus modems support V.
COMSPHERE 3800Plus Modems Call Response Call Answer Commands Call Failure Indication (CFI) Call Answer commands disable or enable the modem’s AutoAnswer function. These commands are issued from the DTE. Call Answer commands include Incoming Call (INC), Disregard Incoming Call (DIC) and Connect Incoming Call (CIC). The CFI response is issued to the DTE if the modem fails a CRN or CRS command. CFI is similar to the AT result codes BUSY, NO ANSWER, NO CARRIER, NO DIALTONE, and ERROR.
ITU-T V.25bis Dialing Commands and Responses Program Normal (PRN) Command Response The Program Normal (PRN) command allows the DTE to enter and store a telephone number to a specific directory location. PRN is similar to the AT&Z command. A Command Response indicates that the command entered was a valid or invalid entry. Command Response includes Valid (VAL) and Invalid (INV). The PRN command format is: Valid (VAL) PRNx;n Where: The VAL response indicates that the modem has accepted the V.
COMSPHERE 3800Plus Modems Table F-1 V.25bis Commands V.25bis Command Description AT Command/ S-Register Equivalent CALL REQUEST COMMANDS CRN Call Request with Number Provided ATD CRS Call Request with Memory Address ATDS CALL ANSWER COMMANDS INC Incoming Call Indication RING DIC Disregard Incoming Call NONE CIC Connect Incoming Call ATA PROGRAM COMMAND PRN Program Normal AT&Z LIST REQUEST RLN Request to List Stored Number NONE Table F-2 V.25bis Response Messages V.
Default Configuration Options Overview Table G-1 lists all default configuration options for the main four factory preset configurations. (Additional configuration options set by the optional Cellular (Mobile) G and Cellular (PSTN) factory preset configurations are listed under the &F5 and &F6 commands in Chapter 13, AT Command Set and S-Registers.) An N/A indicates that the value for this configuration option does not appear on the LCD if that factory default configuration is selected.
COMSPHERE 3800Plus Modems Table G-1 (2 of 5) Factory Default Configuration Options Configuration Option DTE DIALER DTE Dialer Type AT Escape Character Escape Guard Time Break Forces Escape Command Character Echo Carriage Return Character Backspace Character Linefeed Character Result Codes Extended Result Codes Result Codes Format V.25bis Coding V.25bis Idle Fill V.
Default Configuration Options Table G-1 (3 of 5) Factory Default Configuration Options Configuration Option Async Dial and UNIX Dial Default Settings Sync Dial Default Settings Sync Leased Answer/ Originate Mode Default Settings DIAL LINE Modulation Dial Line Rate Automode Autorate Dial Transmit Level V.22bis Guard Tone Train Time Asymmetric Rate Fall Forward Delay V.34 33600(V34) Enable Enable Permissive – 9 dBm Disable Long Enable Disable V.
COMSPHERE 3800Plus Modems Table G-1 (4 of 5) Factory Default Configuration Options Configuration Option V.42/MNP/BUFFER Error Control Mode V.
Default Configuration Options Table G-1 (5 of 5) Factory Default Configuration Options Configuration Option SECURITY Entry Wait Time2 VF Prompt Type2 DTE Password Tries2 DTE Password Termination Character2 Password Backspace Character2 Answer Security Mode 2 Originate Security Mode 2 2 This Async Dial and UNIX Dial Default Settings Sync Dial Default Settings Sync Leased Answer/ Originate Mode Default Settings 20 sec 2nd Dial Tone 1 20 sec 2nd Dial Tone 1 20 sec 2nd Dial Tone 1 013 ASCII 013 ASCII
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Equipment List Equipment H Feature/Part Number Model 3810Plus (110 v) 3980-A2-201 Model 3811Plus 3981-B1-001 V.29 Feature 3980-C1-002 V.
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Synchronous Data Compression Overview I The SyncDTE CRC configuration option determines whether the CRC of the DTE frame (the FCS field) is transmitted. If the CRC type is known to be the 16-bit CRC for HDLC frames as defined by ITU-T (generator polynomial x16 + x12 + x5 + 1), the CRC can be removed by the local modem and added to the DTE frame by the remote modem.
COMSPHERE 3800Plus Modems • Natural flow control. Some DTEs can only send a limited number of information frames without any acknowledgment from the remote DTE. This number is the acknowledgment window size. If the DCE buffers this number of DTE frames, it will not receive another DTE frame. This is equivalent to the SyncFlowControl configuration option being set to None. When the transmit clock is provided by the DTE, the receive clock is set by the modem equal to the DTE clock.
Synchronous Data Compression Table I-1 SDC Negotiation Configuration Scenarios Answering Modem Originating Modem Negotiation Results SDC enabled with LAPM_Buffer negotiation. SDC enabled. SDC connection. SDC enabled with LAPM_Discon negotiation. SDC enabled. SDC connection. SDC enabled with LAPM_Buffer negotiation. SDC disabled. Buffer mode connection.* SDC enabled with LAPM_Discon negotiation. SDC disabled. Disconnect.** SDC disabled. SDC enabled with LAPM_Buffer negotiation.
COMSPHERE 3800Plus Modems Tuning SDC Efficiency Modem Configuration SDC efficiency is dependent on the configuration parameters of the DTE and the modem. There are also configuration options in the V42/MNP/Buffer branch of the 3800Plus modem which affect SDC efficiency. DTE Configuration (LAPM) Max Frame Size. Except in environments where line impairments are known to be unusually high, set this to the maximum (256).
Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem. When a power cycle occurs, a reset is performed, or a save is issued using the DCP, this area is updated with the contents of Active (Saved). Active (Saved) A nonvolatile configuration area containing the most recently saved configuration options. Any changes made to configuration options can be saved using either the DCP’s Save command or by issuing an AT&W0 command.
COMSPHERE 3800Plus Modems autorate To adjust to varying VF line conditions by changing the data rate to a higher or lower rate after connection. The lowest rate the modem autorates to is 4800 bps; the highest possible rate depends on the modulation the modems connected with. In V.34, the modems may autorate asymmetrically. backplane A common bus at the rear of a nest or chassis that provides communications and power to circuit card slots.
Glossary connector An outlet on equipment and cables that provides a connection. CPU Central Processing Unit. The main or only computing device in a data processing system. CSA Canadian Standards Association. CTS Clear To Send. A signal indicating that the device is ready for the DTE to transmit data. Usually occurs in response to Request To Send (RTS). Customer 1 A user-defined configuration area containing customized configuration options for a specific application.
COMSPHERE 3800Plus Modems DTR Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the EIA-232 interface (V.24 circuit 108/1, /2), that indicates the DTE is turned ON and connected to the modem. edit area A temporary work area used to view and change configuration options from the DCP without impacting modem operation. The edit area can be loaded from one of five configuration option areas: Active (Operating), Active (Saved), Customer 1, Customer 2, or Factory.
Glossary ITU-T The Telecommunications Standardization Sector of the International Telecommunications Union, an advisory committee established by the United Nations to recommend communications standards and policies. Before March 1993 it was called CCITT. JM8 A jack used for leased-line networks. Pins 1 and 2 are the transmit pair and Pins 7 and 8 are the receive pair. kB Kilobyte or kilobytes. One kilobyte is usually taken to be 1,024 bytes. kbps Kilobits per second.
COMSPHERE 3800Plus Modems online The state of a modem that is connected to and communicating with another modem. Originate mode The modem is in a state where it is ready to transmit a call. In a dial network, it is the modem that makes the call. In a leased-line network, it is one of two sides of the network that is selected to be the originating modem. parity A way of checking data accuracy by counting the number of bits that have a value of one. PBX Private Branch Exchange.
Glossary SDCP Shared Diagnostic Control Panel. A feature that allows carrier-mounted devices to share the same diagnostic control panel. SDU Shared Diagnostic Unit. A circuit card installed in Slot 0 of the COMSPHERE 3000 Series Carrier that provides an interface between an optional SDCP or network management system and the devices in the carrier. Select key An SDCP key that allows the selection of a specific card slot in the COMSPHERE 3000 Series Carrier.
COMSPHERE 3800Plus Modems V.32bis An ITU-T standard for modems operating full-duplex with asynchronous or synchronous data over dial networks (PSTN) or leased lines at 14,400, 12,000, 9600, 7200, or 4800 bps. V.32terbo A modulation that adds the 19,200 bps and 16,800 bps data rates to the V.32bis data rates. It is a proprietary modulation, not an ITU-T standard. V.33 An ITU-T standard for devices operating half-duplex with synchronous data at 14,400 and 12,000 bps. V.
Index A A/ (Repeat Last Command), 13-3 Abort (Test branch), 7-2 ac power connection, 2-4 requirements, D-3 Access from Remote, 8-44 Active (Operating) configuration area, 8-1 Active (Saved) configuration area, 8-1 Administrative Password, 11-4, 11-10 Answer, 5-3 Answer Access security, 11-2 Answer Access Security Mode, 8-47 Answer Security, 11-8 any–key abort, 5-2, 13-4, 13-5 Asymmetric Rate Mode Dial Line, 13-20 Leased Line, 13-20 Async DTE Rate, 8-7 AT Command Mode, 8-18 AT commands “H (V.
COMSPHERE 3800Plus Modems connection ac power, 2-4 COMSPHERE 6700 Series NMS, 2-5 dial-line, 2-4 DTE, 2-3 leased-line, 2-4 Control branch, 9-1 CT111 Rate Control, 8-13, 13-27 CTS Control (\D), 8-11, 13-13 Customer configuration areas, 8-1 B Backspace Character, 8-16 Bad Lines Auto Originate, 8-30 Bell Mode, 13-3 Blind Dial Pause, 8-19 Break Buffer Control, 8-38 Break Forces Escape, 8-15 Buffer Size in Buffer Mode, 8-40 Busy Tone Detect, 8-20 C cables auxiliary, E-4 crossover, E-4 Call Answer commands (V.
Index DTE Rate Async, 8-7 Sync, 8-8 DTE Rate=VF Rate, 8-13 DTE rates supported, D-2 DTE Remote Loopback, 8-41 DTE RL (CT140), 13-26 DTE status, 6-4 DTE-side password backspace character, 8-47 number of tries, 8-46 termination character, 8-46 DTR Action, 8-9 DTR Action (&D), 13-8 DTR Alarm Reporting, 8-45, 13-29 DTR Auto Redial, 8-23 DTR Continuous Repeat, 8-18, 13-23 Flow Control of Modem, 8-37 Front Panel Security Access, 4-13 G Get_User_ID, 8-47 H HDLC, 8-34 heat dissipation, D-3 Hidden Choice Indicat
COMSPHERE 3800Plus Modems pin assignments EIA–232–D, E-2 VF Connector, E-3 power consumption, D-3 power-up procedure, 2-5 primary channel, 10-2 Proactive Retrain, 8-27 S23, 13-20 messages, 4-7 MI/MIC Dialing, 8-23 MNP5 Compression, 8-36 models, 1-2 carrier-mounted, 3-1 standalone, 2-1 Modem-to-Modem Flow Control, 8-38 Modulation (Dial Line configuration option), 8-24 Modulation (Leased Line configuration option), 8-28 Modulation/Data Rate, %B, %BL commands, 13-15 modulations supported, D-2 Q quiet answer
Index S14 (Asymmetric Rate Mode), 13-20 S15 (Asymmetric Rate Mode), 13-20 S18 (Test Timeout), 8-41, 13-20 S23 (Proactive Retrain), 13-20 S26 (RTS/CTS Delay), 8-12, 13-20 S28 (SDC Negotiation), 13-21 S29 (SDC Idle Fill), 13-21 S31 (SDC Bit Encoding), 13-21 S32 (Sync DTE CRC), 13-22 S35 (Auto Redial), 13-22 S36 (Rate Auto Originate), 8-30, 13-22 S37 (Auto Redial), 8-23, 8-31 S37 (DTR Auto Redial), 13-23 S38 (DTR Continuous Repeat), 8-18, 13-23 S39 (Receive Buffer Disconnect Delay), 8-39, 13-23 S40 (Auto Make
COMSPHERE 3800Plus Modems V.25bis response messages, F-3 V.29 Train On Data, 8-31, 13-32 V.42 ARQ WIndow Size, 13-31 V.42bis Compression, 8-36 V.54 Address, 8-42, 13-27 V.
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