Paradyne 3800PLUS инструкция обслуживания

COMSPHERE 3800 P LUS MODEMS USER’S GUIDE Documen t No. 3980-A2-GB30-4 1 February 2002[...]

COMSPHERE 3800 Plus Modems A February 2002 3980-A2-GB30-4 1 COMSPHERE 3800 Plus Modems User ’ s Guide 3980-A2-GB30-4 1 6 t h Edition ( February 2002 ) 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 3810 Plus standalone modems the Universal Service Order [...]

Safety Instructions B 3980-A2-GB30-40 October 1998 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. T o ensure reliable operation of the product and to protect it from overheating, these slots and [...]

COMSPHERE 3800 Plus Modems C October 1998 3980-A2-GB30-40 Notices                      ?[...]

Government Requirements D 3980-A2-GB30-40 October 1998 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 excee[...]

COMSPHERE 3800 Plus Modems E October 1998 3980-A2-GB30-40 Canada Notice to Users of the Canadian Public Switched T elephone 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 [...]

i 3980-A2-GB30-40 October 1998 T able of Contents Preface Objectives and Reader Assumptions vii . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3800 Plus Modems ii October 1998 3980-A2-GB30-40 4. Front Panel Operation Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Indicators 4-2 . . . . . . . . . . . . . . . . . .[...]

T able of Contents iii 3980-A2-GB30-40 October 1998 12. Fax Operation Overview 12-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fax Operation 12-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13. A T Command Set and S-Registers Overview 13-1 . . . . . .[...]

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T able of Contents v 3980-A2-GB30-40 October 1998 List of Figures Figure Page 2-1 3810 Plus Modem 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 3810 Plus Rear Panel 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 3600 Hubbing [...]

COMSPHERE 3800 Plus Modems vi October 1998 3980-A2-GB30-40 List of T ables T able Page 4-1 3800 Plus DCP LEDs 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 SDCP LEDs 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 T op[...]

vii 3980-A2-GB30-40 October 1998 Preface Objectives and Reader Assumptions This manual describes how to install and operate the 3810 Plus (standalone) and 381 1 Plus (carrier -mounted) modems. The reader is assumed to have a basic understanding of modems and their operation. How to Use This Manual Chapter 1 provides information about the features o[...]

COMSPHERE 3800 Plus Modems viii October 1998 3980-A2-GB30-40 Related Documents 3000-A2-GA31 COMSPHERE 3000 Series Carrier , Installation Manual 3610-A2-GZ45 3600 Hubbing Device, Featur e Number 3600-F3-300, Installation Instructions 3980-A2-GZ41 COMSPHERE 381 1Plus Modem Installation Instructions 6700-A2-GY31 COMSPHERE 6700 Series Network Managemen[...]

1-1 3980-A2-GB30-40 October 1998 Introduction Overview The COMSPHERE r 3810 Plus and 381 1 Plus 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 3800 Plus modems’ software d[...]

COMSPHERE 3800 Plus Modems 1-2 October 1998 3980-A2-GB30-40 • 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). • Convenient migration to new or optional features through software downloading. • ITU-T V .42bis and MNP Class 5 data compr[...]

2-1 3980-A2-GB30-4 1 February 2002 3810 Plus Installation Overview The standalone 3810 Plus modem ( Figure 2-1 ) is capable of either dial or 4-wire/2-wire leased-line operation. It is controlled using A T commands or the diagnostic control panel (DCP). The DCP consists of an LCD which displays selections, three function keys and four directional k[...]

COMSPHERE 3800 Plus Modems 2-2 October 1998 3980-A2-GB30-40 DIAGNOSTIC CONTROL LCD AND ST A TUS POWER SUPPL Y 496-14678-01 POWER ON/OFF LEASED (3810 Plus ONL Y) DIAL (OR LEASED FOR 3820 Plus ) DTE 1 NMS POWER IN Figure 2-1. 3810 Plus Modem Customer-Supplied Equipment The following customer-supplied equipment may be required to complete a data commu[...]

3810 Plus Installation 2-3 3980-A2-GB30-40 October 1998 • An 6-pin modular keyed jack for dial (PSTN) lines. • A 4-pin modular jack for network management system (NMS) connection. • A 25-pin DB-25-S receptacle for DTE interface. Connecting 3810 Plus Modems with Supplied Cables Figure 2-2 shows how 3810 Plus modems are connected to certain TEL[...]

COMSPHERE 3800 Plus Modems 2-4 October 1998 3980-A2-GB30-40 Dial-Line Connection Use the following procedure to connect the 3810 Plus modem to the dial network interface: 1. Insert the 6-position, 4-conductor modular plug into the jack labeled DIAL/LEASED ( Figure 2-2 ). 2. Insert the other end of the modular cord into the dial network interface (?[...]

3810 Plus Installation 2-5 3980-A2-GB30-40 October 1998 Network Management System Connection For the 3810 Plus 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 [...]

COMSPHERE 3800 Plus Modems 2-6 October 1998 3980-A2-GB30-40 Removing and Replacing 3810 Plus Modems T o remove and replace a 3810 Plus 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 [...]

3-1 3980-A2-GB30-40 October 1998 381 1 Plus Installation Overview The carrier-mounted 381 1 Plus 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 381 1 Plus has 16 LED status indicators for displaying modem activity and an audio speaker jack for the [...]

COMSPHERE 3800 Plus Modems 3-2 October 1998 3980-A2-GB30-40 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 [...]

381 1 Plus Installation 3-3 3980-A2-GB30-40 October 1998 The installation of a 381 1 Plus varies slightly if an SDCP is installed on the front of the carrier . T o install a 381 1 Plus modem into the carrier without an SDCP , perform the following steps: CAUTION If you remove the 381 1 Plus from the carrier , always use a ground strap when handling[...]

COMSPHERE 3800 Plus Modems 3-4 October 1998 3980-A2-GB30-40 If the modem is to communicate with an installed SDCP , install the modem as described above and 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 wan[...]

4-1 3980-A2-GB30-40 October 1998 Front Panel Operation Overview This chapter describes how to use the diagnostic control panel (DCP) of the 3800 Plus modem. Diagnostic Control Panels There are two types of DCPs: the front panel on the standalone 3810 Plus modem, and the shared diagnostic control panel (SDCP), an optional feature used with a 381 1 P[...]

COMSPHERE 3800 Plus Modems 4-2 October 1998 3980-A2-GB30-40 381 1 Plus Faceplate and Shared Diagnostic Control Panel (SDCP) The shared diagnostic control panel (SDCP) is used to manage carrier-mounted 381 1 Plus modems. Use the SDCP to issue commands to view and select configuration options on, or to monitor tests for , a specific 381 1 Plus modem.[...]

Front Panel Operation 4-3 3980-A2-GB30-40 October 1998 T able 4-1 3800 Plus 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 (3810 Plus only) green The modem has responded to a diagnosti[...]

COMSPHERE 3800 Plus Modems 4-4 October 1998 3980-A2-GB30-40 The SDCP LEDs are listed and described in T able 4-2. T able 4-2 SDCP LEDs Label Color Indicates OK green Power is ON and the modem is capable of operating. Alarm red The modem has detected a problem with its operation. For example, the modem failed a self-test. BckUp yellow The modem, ori[...]

Front Panel Operation 4-5 3980-A2-GB30-40 October 1998 Left/Right Scroll Indicato r The left/right scroll indicator displays when more choices are available to the left and right of what is currently displayed on the LCD. Left Scroll Indicator < The left scroll indicator displays when more choices are available to the left of what is currently d[...]

COMSPHERE 3800 Plus Modems 4-6 October 1998 3980-A2-GB30-40 Menu Structure The menu tree is a hierarchical structure used to display functions that configure and control local and remote 3800 Plus modems. It is accessed via the DCP and is shown in Appendix A, Menu T ree . The menu tree contains the following branches: Call Setup  Used to dial, d[...]

Front Panel Operation 4-7 3980-A2-GB30-40 October 1998 T op-Level Menu Status and Operational Messages Access to all menu tree branches from the DCP begins at the T op-Level menu, the head of the menu hierarchy . The LCD’ s top line identifies the modem status, as listed in T able 4-3, while the bottom line displays the main menu tree branches an[...]

COMSPHERE 3800 Plus Modems 4-8 October 1998 3980-A2-GB30-40 T able 4-3 (2 of 3) T op 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. T raining The modem is training or retraining. EC Negotiating The local and remote modems are ne[...]

Front Panel Operation 4-9 3980-A2-GB30-40 October 1998 T able 4-3 (3 of 3) T op 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 i[...]

COMSPHERE 3800 Plus Modems 4-10 October 1998 3980-A2-GB30-40 T able 4-4 Common Operational Messages Common Operational Messages Indicates Please W ait... 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 whe[...]

Front Panel Operation 4-1 1 3980-A2-GB30-40 October 1998 Selecting Factory Configuration Options After the modem passes the power-up self-test, configure it for operation using one of the factory preset configurations. The 3800 Plus modems have several factory preset templates that contain the most commonly used configuration options (straps) for A[...]

COMSPHERE 3800 Plus Modems 4-12 October 1998 3980-A2-GB30-40 • On initial power-up, the modem is in Command mode. T o verify that the modem is connected and functioning properly , enter the following: TYPE: AT PRESS: Return (Enter) The screen displays OK. If the modem does not return OK , refer to Appendix C, T roubleshooting . NOTE If you have a[...]

Front Panel Operation 4-13 3980-A2-GB30-40 October 1998 Diagnostic Control Panel Security Access NOTE This page of the manual is self-supporting and can be removed to prevent unwanted knowledge of the DCP security access selections. Use the DCP security access function to ‘ ‘lock” the DCP of any 3800 Plus modem and prevent unwanted user acces[...]

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5-1 3980-A2-GB30-40 October 1998 Call Setup Branch Overview The Call Setup branch of the T op-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[...]

COMSPHERE 3800 Plus Modems 5-2 October 1998 3980-A2-GB30-40 Call Setup Branch In the following descriptions, the shaded key indicates what key to press to perform the described operation. T o access the Call Setup branch from the T op-Level menu, select Call Setup: F1 Idle: 28.8 > Call_Setup F2 F3 Dial Dial allows you to dial any telephone numbe[...]

Call Setup Branch 5-3 3980-A2-GB30-40 October 1998 Select Disconnect. F1 Disconnect Command Complete F2 F3 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. T o exit this function and remain in the Call Setup branch, p[...]

COMSPHERE 3800 Plus Modems 5-4 October 1998 3980-A2-GB30-40 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. F1 Call Setup: Dial Standby F2 F3 When this occurs, the Dial Standby function now app[...]

Call Setup Branch 5-5 3980-A2-GB30-40 October 1998 T o access Change Directory from the Call Setup branch, make the following selections: F1 Call Setup: > Change_Directory F2 F3 Press the key until Change Directory is displayed. Press any function key to select Change Directory . F1 01 : 5551234 ← Nxt "# F2 F3 The phone number listed in d[...]

COMSPHERE 3800 Plus Modems 5-6 October 1998 3980-A2-GB30-40 T able 5-1 V alid 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 3800 Plus modems recognize: T – T one (DTMF) dial. Any digit 0–9, *, #, A, B, C,[...]

6-1 3980-A2-GB30-40 October 1998 Status Branch Overview The Status branch of the T op-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,[...]

COMSPHERE 3800 Plus Modems 6-2 October 1998 3980-A2-GB30-40 VF VF displays the condition of the dial or leased-line connection. T o access VF from the Status branch, make the following selection: F1 Status: VF Identity F2 F3 Select VF . F1 Status : VF > SigQual = Excelent F2 F3 The modem’ s signal quality is displayed on the LCD’ s bottom li[...]

Status Branch 6-3 3980-A2-GB30-40 October 1998 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. T o access Identity from the S[...]

COMSPHERE 3800 Plus Modems 6-4 October 1998 3980-A2-GB30-40 DTE DTE displays the state and/or activity of the EIA-232-D interface leads: LSD, DTR, DSR, T st, TXD, RXD, R TS, and CTS signals are monitored. The interface leads status is updated every 5 seconds. T o access DTE from the Status branch, make the following selections: F1 Status: Identity [...]

Status Branch 6-5 3980-A2-GB30-40 October 1998 T o access Record from the Status branch, make the following selections: F1 Status < Options Record F2 F3 Press the key until Record appears. Select Record. F1 Record Status Display Clear F2 F3 T o display sequence faults, select Display . F1 Record Number 1 Modem O.K. F2 F3 The LCD displays the fir[...]

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7-1 3980-A2-GB30-40 October 1998 T est Branch Overview The T est branch of the T op-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 [...]

COMSPHERE 3800 Plus Modems 7-2 October 1998 3980-A2-GB30-40 T est Branch T o access the T est branch from the T op-Level menu, make the following selections: F1 Idle : 28.8 Status T est F2 F3 Press the key until T est appears. Select T est. Abort Abort ends any test that is in progress and brings the modem back to the normal mode of operation. Conf[...]

T est Branch 7-3 3980-A2-GB30-40 October 1998 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 [...]

COMSPHERE 3800 Plus Modems 7-4 October 1998 3980-A2-GB30-40 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 [...]

T est Branch 7-5 3980-A2-GB30-40 October 1998 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 digi[...]

COMSPHERE 3800 Plus Modems 7-6 October 1998 3980-A2-GB30-40 Pattern Pattern can transmit and receive a 51 1 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 Asynchr[...]

T est Branch 7-7 3980-A2-GB30-40 October 1998 T o access Pattern from the T est branch, make the following selections: F1 T est : > Pattern F2 F3 Press the key until Pattern appears. Select Pattern to start this test. F1 T est : Pattern > Blks Errd = xxxxxxx F2 F3 BlksErrd=xxxxxxx displays the number of blocks of data found in error (block si[...]

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8-1 3980-A2-GB30-40 October 1998 Configure Branch Overview After installing a 3800 Plus modem, you set its software configuration options using either the diagnostic control panel (DCP) or the A T command set. This chapter describes how to access and use the Configure branch of the T op-Level menu via the DCP . The Configure branch accesses the Edi[...]

COMSPHERE 3800 Plus Modems 8-2 October 1998 3980-A2-GB30-40 CONTENTS OF Active (Saved) ARE AUTOMA TICALL Y COPIED TO Active (Operating) WHEN A SA VE IS COMMANDED VIA THE DCP , ON A RESET , OR ON POWER-UP • Async Dial • Sync Dial • Sync Leased (Answer/Originate) • UNIX Dial • Cellular (Mobile) • Cellular (PSTN) Load Edit Area From 494-13[...]

Configure Branch 8-3 3980-A2-GB30-40 October 1998 Active (Saved) (A TZ0, A TZ3) LOAD Active (Operating) USING AT Z OR A T&F COMMAND Active (Operating) CHANGES MADE USING ANY AT COMMAND IMMEDIA TEL Y AFFECT MODEM OPERA TION USE A T&W COMMAND TO SA VE CHANGES TO Active (Saved), Customer 1, OR Customer 2 494-13080-02 Customer 1 (A TZ1) Custome[...]

COMSPHERE 3800 Plus Modems 8-4 October 1998 3980-A2-GB30-40 Configure Branch The Configure branch of the T op-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 The Cellular[...]

Configure Branch 8-5 3980-A2-GB30-40 October 1998 Editing and Saving a Configuration Option The following example shows how to change the Remote Access Password using the DCP . (If you ever intend to access another 3800 Plus Series modem via the Remote branch of the T op-Level menu, the Remote Access Password must be the same for both modems.) By f[...]

COMSPHERE 3800 Plus Modems 8-6 October 1998 3980-A2-GB30-40 Select the F2 (  ) key to increment password values. F1 RemAccssPasswrd Nxt ąĄ  0 0000000 F2 F3 Press the key to move the cursor to the next position. F1 RemAccssPasswrd Nxt ąĄ  12345678 F2 F3 Continue this sequence until you have entered the new password value. T o save the n[...]

Configure Branch 8-7 3980-A2-GB30-40 October 1998 Configuration T ables The modem’ s configuration options are arranged into eight groups based upon functionality: DTE Interface (T able 8-1), DTE Dialer (T able 8-2), Line Dialer (T able 8-3), Dial Line (T able 8-4), Leased Line (T able 8-5), V .42/MNP/Buffer (T able 8-6), T est (T able 8-7), and [...]

COMSPHERE 3800 Plus Modems 8-8 October 1998 3980-A2-GB30-40 T able 8-1 (2 of 7) DTE Interface Configuration Options Sync DTE Rate:128000 Nxt 128000 1 15200 1 12000 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 [...]

Configure Branch 8-9 3980-A2-GB30-40 October 1998 T able 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 A T command equivalent; A T prefix determines the number of stop bits via autobauding. DTR Ac[...]

COMSPHERE 3800 Plus Modems 8-10 October 1998 3980-A2-GB30-40 T able 8-1 (4 of 7) DTE Interface Configuration Options DSR Control: Forced_On Nxt Forced_On Stndrd_RS232 WinkWhenDisc Follows_DTR On_Early Delay_T oData DialBkT oggle Data Data Set Ready Control. DSR is a signal from the modem to the DTE indicating the modem is connected and ready for op[...]

Configure Branch 8-1 1 3980-A2-GB30-40 October 1998 T able 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[...]

COMSPHERE 3800 Plus Modems 8-12 October 1998 3980-A2-GB30-40 T able 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 R TS from the DTE and the modem sending CTS to the DTE. This delay is o[...]

Configure Branch 8-13 3980-A2-GB30-40 October 1998 T able 8-1 (7 of 7) DTE Interface Configuration Options TX Clock Source: Internal Nxt Internal External RXC_Loop T ransmit 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 inte[...]

COMSPHERE 3800 Plus Modems 8-14 October 1998 3980-A2-GB30-40 DTE Dialer The DTE Dialer configuration options establish the DTE-to-modem protocol for call establishment and control. T able 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[...]

Configure Branch 8-15 3980-A2-GB30-40 October 1998 T able 8-2 (2 of 5) DTE Dialer Configuration Options *A T Escape Char: 043 ASCI Nxt  043 ASCI A T 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 fr[...]

COMSPHERE 3800 Plus Modems 8-16 October 1998 3980-A2-GB30-40 T able 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). A T command equivalent is S-register S5= n . *Linefe[...]

Configure Branch 8-17 3980-A2-GB30-40 October 1998 T able 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 Number[...]

COMSPHERE 3800 Plus Modems 8-18 October 1998 3980-A2-GB30-40 T able 8-2 (5 of 5) DTE Dialer Configuration Options *A T Cmnd Mode: Normal Nxt Normal No_ERROR NoStrapOrERR A T Command Mode. Determines how the modem responds to valid and invalid A T commands. NOTE: Since this configuration option affects A T commands, it cannot be changed by the A T&a[...]

Configure Branch 8-19 3980-A2-GB30-40 October 1998 Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. T able 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[...]

COMSPHERE 3800 Plus Modems 8-20 October 1998 3980-A2-GB30-40 T able 8-3 (2 of 5) Line Dialer Configuration Options BusyT one Detect: Enable Nxt Enable Disable Busy T one Detect. Sets the modem to monitor for Busy T one (Enable) or ignore Busy T one (Disable). This configuration option is normally enabled; however , if the modem receives false busy [...]

Configure Branch 8-21 3980-A2-GB30-40 October 1998 T able 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. NO[...]

COMSPHERE 3800 Plus Modems 8-22 October 1998 3980-A2-GB30-40 T able 8-3 (4 of 5) Line Dialer Configuration Options NoDataDiscT rig: TXD and RXD Nxt TXD and RXD TXD Only RXD Only TXD or RXD No Data Disconnect T rigger Signal. Works in conjunction with No Data Disconnect (T), and determines whether Pin 2 (transmit data) or Pin 3 (receive data) of th[...]

Configure Branch 8-23 3980-A2-GB30-40 October 1998 T able 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 [...]

COMSPHERE 3800 Plus Modems 8-24 October 1998 3980-A2-GB30-40 Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. T able 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) [...]

Configure Branch 8-25 3980-A2-GB30-40 October 1998 T able 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[...]

COMSPHERE 3800 Plus Modems 8-26 October 1998 3980-A2-GB30-40 T able 8-4 (3 of 4) Dial Line Configuration Options Dial TX Level: Permissv(– 9) Nxt Permissv(– 9) –10 dBm –1 1 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[...]

Configure Branch 8-27 3980-A2-GB30-40 October 1998 T able 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 ove[...]

COMSPHERE 3800 Plus Modems 8-28 October 1998 3980-A2-GB30-40 Leased Line The Leased Line configuration options are used to configure the modem for operation over leased lines. NOTE The Leased Line configuration group only appears if the modem is configured with the Sync Leased factory preset template. The Leased Line configuration group only appear[...]

Configure Branch 8-29 3980-A2-GB30-40 October 1998 T able 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) 960[...]

COMSPHERE 3800 Plus Modems 8-30 October 1998 3980-A2-GB30-40 T able 8-5 (3 of 5) Leased Line Configuration Options *Leased TX Level: 0 N x t0– 1– 2– 3– 4– 5– 6– 7– 8– 9– 1 0– 1 1– 1 2– 1 3 – 1 4 – 1 5 Leased T ransmit Level. Selects the modem’s transmit power level over leased lines. The transmit output level can be [...]

Configure Branch 8-31 3980-A2-GB30-40 October 1998 T able 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 backu[...]

COMSPHERE 3800 Plus Modems 8-32 October 1998 3980-A2-GB30-40 T able 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 asymmet[...]

Configure Branch 8-33 3980-A2-GB30-40 October 1998 V .42/MNP/Buffer V .42/MNP/Buf fer 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 configura[...]

COMSPHERE 3800 Plus Modems 8-34 October 1998 3980-A2-GB30-40 T able 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 – [...]

Configure Branch 8-35 3980-A2-GB30-40 October 1998 T able 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 whet[...]

COMSPHERE 3800 Plus Modems 8-36 October 1998 3980-A2-GB30-40 T able 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 opera[...]

Configure Branch 8-37 3980-A2-GB30-40 October 1998 T able 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 co[...]

COMSPHERE 3800 Plus Modems 8-38 October 1998 3980-A2-GB30-40 T able 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. I[...]

Configure Branch 8-39 3980-A2-GB30-40 October 1998 T able 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 [...]

COMSPHERE 3800 Plus Modems 8-40 October 1998 3980-A2-GB30-40 T able 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 co[...]

Configure Branch 8-41 3980-A2-GB30-40 October 1998 T est The T est configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. T able 8-7 shows each T est configuration option as it appears on the LCD, with the Async Dial factory default setting (the default value if the modem [...]

COMSPHERE 3800 Plus Modems 8-42 October 1998 3980-A2-GB30-40 T able 8-7 (2 of 2) T est Configuration Options V54 Address: Disable Nxt Disable (Address V alues) V .54 Address. Determines which remote 3800 Plus modem is placed into a remote loopback test. This can be either a remote digital loopback or local analog loopback. This type of addressing c[...]

Configure Branch 8-43 3980-A2-GB30-40 October 1998 Misc The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. T able 8-8 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Async Dial factory default setting (the default[...]

COMSPHERE 3800 Plus Modems 8-44 October 1998 3980-A2-GB30-40 T able 8-8 (2 of 3) Miscellaneous Configuration Options Speaker V olume: Medium Nxt Medium Low High Speaker V olume. Controls the level of speaker volume. The factory default is Medium. NOTE: Speaker V olume can also be temporarily set using the Control branch; however , a reset or power [...]

Configure Branch 8-45 3980-A2-GB30-40 October 1998 T able 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 CallProg[...]

COMSPHERE 3800 Plus Modems 8-46 October 1998 3980-A2-GB30-40 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. T able 8-9 shows each Security configuration option as it appears on the LCD.[...]

Configure Branch 8-47 3980-A2-GB30-40 October 1998 T able 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). G[...]

COMSPHERE 3800 Plus Modems 8-48 October 1998 3980-A2-GB30-40 This page intentionally left blank.[...]

9-1 3980-A2-GB30-40 October 1998 Control Branch Overview The Control branch of the T op-Level menu allows you to manage hardware and software functions, such as speaker volume, reset, busy out, and firmware download. The 381 1 Plus modem has the additional hardware function, Service Line. Control Branch T o access Control from the T op-Level menu, [...]

COMSPHERE 3800 Plus Modems 9-2 October 1998 3980-A2-GB30-40 Speaker 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, Configur e Branch . T o access Speaker from the Contr[...]

Control Branch 9-3 3980-A2-GB30-40 October 1998 Make Busy/Remove Make Busy 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. W ARNING T o not violate FCC and DOC regulations, this function must only be used behind a user ?[...]

COMSPHERE 3800 Plus Modems 9-4 October 1998 3980-A2-GB30-40 Download Code 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. There are two selectio[...]

Control Branch 9-5 3980-A2-GB30-40 October 1998 W ARNING 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). If the[...]

COMSPHERE 3800 Plus Modems 9-6 October 1998 3980-A2-GB30-40 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. F1 RemClone OK Call_Setup F2 F3 If the download is successful, the local modem displays Rem[...]

10-1 3980-A2-GB30-40 October 1998 Remote Branch Overview The Remote branch of the T op-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 .32 terbo , V .32bis,[...]

COMSPHERE 3800 Plus Modems 10-2 October 1998 3980-A2-GB30-40 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 acti[...]

Remote Branch 10-3 3980-A2-GB30-40 October 1998 The T op-Level menu of the remote 3800 Plus modem is similar to the local 3800 Plus modem with the following exceptions: • Change Directory is the only function available under the Call Setup branch. • Self and Local Analog Loop do not appear under the T est branch when using the secondary channel[...]

COMSPHERE 3800 Plus Modems 10-4 October 1998 3980-A2-GB30-40 This page intentionally left blank.[...]

1 1-1 3980-A2-GB30-40 October 1998 Security Overview NOTE This chapter supports the operation of dial access security for COMSPHERE 3800 Plus modems. This chapter is self-supporting and can be removed to prevent unwanted knowledge of dial access security operation. Although the security functions described in this chapter are designed to prevent un[...]

COMSPHERE 3800 Plus Modems 1 1-2 October 1998 3980-A2-GB30-40 Originate Access Security Originate Access lets you control who can originate a call from a local modem via the A T command set. This is useful in LAN and modem pooling applications. W ith Originate Access security , a local user ’ s password is embedded in the A T dial command. If the[...]

Security 1 1-3 3980-A2-GB30-40 October 1998 NOTE 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 . Refer to the Dial command in Chapter 13, AT Command Set and S-Registers , for more on modifiers. This method of password entry requires[...]

COMSPHERE 3800 Plus Modems 1 1-4 October 1998 3980-A2-GB30-40 Security Branch The Security branch of the T op-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 a[...]

Security 1 1-5 3980-A2-GB30-40 October 1998 T o enter your Administrative Password from Set_Access_Ctrl, make the following selections: F1 Security > Set_Access_Ctrl F2 F3 Select Set_Access_Ctrl from the Security branch. F1 Admin Password? Ent ąĄ  0 0000000 F2 F3 The Administrative Password appears. This occurs every time you enter the Secu[...]

COMSPHERE 3800 Plus Modems 1 1-6 October 1998 3980-A2-GB30-40 F1 Select Index Ent ąĄ " 0 001 F2 F3 Select Index appears. Press the F2 ( " ) key to increment index values. Press the key to move the cursor to the next position. Continue this sequence until the desired index appears, and then press Ent. If an index outside of the range is [...]

Security 1 1-7 3980-A2-GB30-40 October 1998 T able 1 1-1 Edit Password T able Group Options PsWdT ype xxxx Nxt Cleared DTE Entry VF_Entry VF_plus_DTE Password T ype. 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 th[...]

COMSPHERE 3800 Plus Modems 1 1-8 October 1998 3980-A2-GB30-40 Set Answer Sec 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[...]

Security 1 1-9 3980-A2-GB30-40 October 1998 Set Orig Sec Set Originate Security controls whether or not the modem can originate a call using A T commands when the dial access security feature is installed. This method of outbound security only applies to modems originating a call. T o access Set_Orig_Sec from Set Access Ctrl, make the following sel[...]

COMSPHERE 3800 Plus Modems 1 1-10 October 1998 3980-A2-GB30-40 Set Admin PsWd 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. NOTE If this value is forgotten, then the only way to acce[...]

Security 1 1-1 1 3980-A2-GB30-40 October 1998 F1 Reset Security < Erase_All_PassWd F2 F3 T o reset security , press until Erase_All_PassWd appears on the LCD. Select Erase_All_PassWd. The entire security database is erased and the Administrative Password defaults to the Reset Default password value. This value appears as a single number on the l[...]

COMSPHERE 3800 Plus Modems 1 1-12 October 1998 3980-A2-GB30-40 Some experimentation may be necessary to determine the number of pauses necessary for your call. A DTE-side password is entered after the modems have trained, but before a normal connection is established. The following example illustrates how to enter a DTE-side password: TYPE: abc123 [...]

Security 1 1-13 3980-A2-GB30-40 October 1998 T able 1 1-5 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. T able 1 1-5 Security Database T able Using DTE-Side Password DTE Password Only Index Password T ype Assigned to 1001 winter DTE_Entry User A [...]

COMSPHERE 3800 Plus Modems 1 1-14 October 1998 3980-A2-GB30-40 T able 1 1-7 is an example of a security database table that uses paired VF and DTE passwords for use in VF_w/_DTE answer security mode. T able 1 1-7 Security Database T able Using Paired VF-Side and DTE-Side Passwords VF and DTE Passwords Index Password T ype Assigned to 02 user1 DTE_E[...]

12-1 3980-A2-GB30-40 October 1998 Fax Operation 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. Fax Operation Y[...]

COMSPHERE 3800 Plus Modems 12-2 October 1998 3980-A2-GB30-40 Y our fax software uses A T 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. Y ou do not have to issue A T commands yourself, unles[...]

13-1 3980-A2-GB30-40 October 1998 A T Command Set and S-Registers Overview The A T command set provides an alternative method to the front panel for entering commands that control the operation and configuration of the 3800 Plus modems. A T commands are issued from an asynchronous DTE (such as a personal computer). This chapter explains how to use [...]

COMSPHERE 3800 Plus Modems 13-2 October 1998 3980-A2-GB30-40 • All commands (except A/ (repeat last command) and +++) must begin with the characters A T and end by pressing the Enter key . The A T (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 [...]

A T Command Set and S-Registers 13-3 3980-A2-GB30-40 October 1998 T able 13-1 (1 of 15) 3800 Plus A T Commands A T Command Description Front Panel Branch A/ Repeat Last Command Re-executes last command string. (Not to be preceded with A T or followed by pressing the Return key .) A Answer Mode Goes off-hook and attempts to establish a connection wi[...]

COMSPHERE 3800 Plus Modems 13-4 October 1998 3980-A2-GB30-40 T able 13-1 (2 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description D n 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 digi[...]

A T Command Set and S-Registers 13-5 3980-A2-GB30-40 October 1998 T able 13-1 (3 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description DS= n Dial Stored Number Dials the number stored in Location n (1–10). (T o store a telephone number , refer to the &Z n=x command.) If any character is received from the DTE before the mode[...]

COMSPHERE 3800 Plus Modems 13-6 October 1998 3980-A2-GB30-40 T able 13-1 (4 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description P Pulse Dial Sets the modem for pulse dial mode. See the D n command. ConfigureEdit Line Dialer Q n Result Codes Q0 Enables modem to send result codes to the DTE. Q1 Disables modem from sending resul[...]

A T Command Set and S-Registers 13-7 3980-A2-GB30-40 October 1998 T able 13-1 (5 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description X n Extended Result Code, Dial T one Detect, and Busy T one Detect Configuration Options Dial Busy Extended T one T one Result Code Detect Detect X0 Disable Disable Disable X1 Enable Disable Disab[...]

COMSPHERE 3800 Plus Modems 13-8 October 1998 3980-A2-GB30-40 T able 13-1 (6 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description +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 o[...]

A T Command Set and S-Registers 13-9 3980-A2-GB30-40 October 1998 T able 13-1 (7 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description &F n Select Factory Default Configuration Options Loads factory configuration options into Active (Operating) area. &F0 Async Dial &F1 Sync Dial &F2 Sync Leased: Answer &F3 UNI[...]

COMSPHERE 3800 Plus Modems 13-10 October 1998 3980-A2-GB30-40 T able 13-1 (8 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description & I Dial T ransmit Level When Dial T ransmit Level T ype is set to Permissive, & I n sets Dial T ransmit Level to a value between –10 and –32 dBm. & I 99 and & I 100 are available [...]

A T Command Set and S-Registers 13-1 1 3980-A2-GB30-40 October 1998 T able 13-1 (9 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description &M n and &Q n Async/Sync Mode and DTE Dialer T ype &M0, &Q0 Modem operates in Asynchronous mode and uses A T Command protocol. &M1, &Q1 Modem operates in Synchronous mode[...]

COMSPHERE 3800 Plus Modems 13-12 October 1998 3980-A2-GB30-40 T able 13-1 (10 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description &T n T ests &T0 Abort. Stops any test in progress. &T1 Local Analog Loop. &T2 Pattern. T ransmits and receives a 51 1 Bit Error Rate T est (BERT). &T3 Local Digital Loopback test.[...]

A T Command Set and S-Registers 13-13 3980-A2-GB30-40 October 1998 T able 13-1 (1 1 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description A n Error Control Maximum Frame Size A0 64 A1 128 A2 192 A3 256 A4 32 A5 16 ConfigureEdit V42/MNP/Buffer C n Error Control Negotiate Buffer C0 Disable. C1 Enable. C2 Disables and s[...]

COMSPHERE 3800 Plus Modems 13-14 October 1998 3980-A2-GB30-40 T able 13-1 (12 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description Q n Flow Control of DTE, Flow Control of Modem Flow Flow Control Control of of DTE Modem Q0 Disable Disable Q1 XON/XOFF XON/XOFF Q2 CTS to DTE Disable Q3 CTS to DTE RTS to Mdm Q4 XON/XOFF Disab[...]

A T Command Set and S-Registers 13-15 3980-A2-GB30-40 October 1998 T able 13-1 (13 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description %B n , %BL n 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 wit[...]

COMSPHERE 3800 Plus Modems 13-16 October 1998 3980-A2-GB30-40 T able 13-1 (14 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description %R 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. %R n must be the last c[...]

A T Command Set and S-Registers 13-17 3980-A2-GB30-40 October 1998 T able 13-1 (15 of 15) 3800 Plus A T Commands A T Command Front Panel Branch Description #SC n Sync Comp Mode Enables and disables synchronous data compression. #SC0 Disable Synchronous Data Compression mode. #SC1 Enable Synchronous Data Compression mode. The factory setting is Disa[...]

COMSPHERE 3800 Plus Modems 13-18 October 1998 3980-A2-GB30-40 S-Register List S-registers af fect the operating parameters of 3800 Plus modems. S-registers are only applicable when the DTE Dialer T ype configuration option is set for A T . (See &M n command.) T able 13-2 lists all S-registers supported by 3800 Plus modems. The first column list[...]

A T Command Set and S-Registers 13-19 3980-A2-GB30-40 October 1998 T able 13-2 (2 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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 li[...]

COMSPHERE 3800 Plus Modems 13-20 October 1998 3980-A2-GB30-40 T able 13-2 (3 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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 d[...]

A T Command Set and S-Registers 13-21 3980-A2-GB30-40 October 1998 T able 13-2 (4 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S28 SDC Negotiation Controls negotiation between two modems attempting to connect using SDC. Register has the following values: 0 = LAPM_Buffer 1 = LAPM_Discon The factory setting is LAPM_Buffer .[...]

COMSPHERE 3800 Plus Modems 13-22 October 1998 3980-A2-GB30-40 T able 13-2 (5 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S32 SyncDTE CRC Determines whether the CRC of the DTE frame is transmitted from modem to modem. Register has the following values: 0 = Ignore 1 = CRC16 The factory setting is Ignore. ConfigureEdit V4[...]

A T Command Set and S-Registers 13-23 3980-A2-GB30-40 October 1998 T able 13-2 (6 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S37 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 p[...]

COMSPHERE 3800 Plus Modems 13-24 October 1998 3980-A2-GB30-40 T able 13-2 (7 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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 .3[...]

A T Command Set and S-Registers 13-25 3980-A2-GB30-40 October 1998 T able 13-2 (8 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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 fo[...]

COMSPHERE 3800 Plus Modems 13-26 October 1998 3980-A2-GB30-40 T able 13-2 (9 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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=T est([...]

A T Command Set and S-Registers 13-27 3980-A2-GB30-40 October 1998 T able 13-2 (10 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description 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. ConfigureEd[...]

COMSPHERE 3800 Plus Modems 13-28 October 1998 3980-A2-GB30-40 T able 13-2 (1 1 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S62 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 Factory setting is ASCII. Configure[...]

A T Command Set and S-Registers 13-29 3980-A2-GB30-40 October 1998 T able 13-2 (12 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S74 Network Position Identification Register identifies each modem as either a control or tributary modem. Register has the following values: 0=T ributary 1=Control Factory setting is T ributary [...]

COMSPHERE 3800 Plus Modems 13-30 October 1998 3980-A2-GB30-40 T able 13-2 (13 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S80 No Data Disconnect T rigger 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 [...]

A T Command Set and S-Registers 13-31 3980-A2-GB30-40 October 1998 T able 13-2 (14 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S88 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 [...]

COMSPHERE 3800 Plus Modems 13-32 October 1998 3980-A2-GB30-40 T able 13-2 (15 of 15) 3800 Plus S-Registers A T Command Front Panel Branch Description S92 V .29 T rain 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[...]

A-1 3980-A2-GB30-40 October 1998 Menu T ree 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. A[...]

COMSPHERE 3800 Plus Modems A-2 October 1998 3980-A2-GB30-40 Call_Setup Status T est “Status” Dial Disconnect Answer Dial_Standby or Return_to_Dial Change_Directory Directory Locations 1 – 10 Abort Self Loc_Analog_Loop Rem_Digital_Loop Loc_Digital_Loop Pattern DTE_Interface Async/Sync Mode Async DTE Rate Sync DTE Rate #Data Bits Parity Bit #St[...]

Menu T ree A-3 3980-A2-GB30-40 October 1998 Configure Ld EditArea frm: Edit Save Choose Function Active (Sav ed) Customer1 Customer2 V42/MNP/Buffer Err Contrl Mode Sync Comp Mode SDC Negotiation SDC Idle Fill SDC BitEncoding SyncDTE CRC SDC Delay Min Sync Flow Cntrl V42bis Compress MNP5 Compress EC Negotiat Bfr EC F allbck Char Flw Cntl of DTE Flw [...]

COMSPHERE 3800 Plus Modems A-4 October 1998 3980-A2-GB30-40 Control Remote Speaker Reset Make_Busy or RemoveMakeBusy Service_Line or DiscServLine Download Code Secondary Prim (data blc kd) ( ExitRem appears instead of Remote when using Remote Mode) Does not appear in Remote Mode. (Rem_Digital_Loop, Loc_Digital_Loop , and P atter n appear if the sec[...]

B-1 3980-A2-GB30-40 October 1998 Result Codes Overview T able B-1 lists all the result codes 3800 Plus modems may send to the DTE. Result codes can be numeric or verbal, terse or extended. See the Q n , V n , and X n commands in Chapter 13, A T Command Set and S-Registers for more information. T able B-1 (1 of 3) Result Codes Numbers (1) Numbers (2[...]

COMSPHERE 3800 Plus Modems B-2 October 1998 3980-A2-GB30-40 T able B-1 (2 of 3) Result Codes Numbers (1) Description Word Numbers (2) *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 rat[...]

Result Codes B-3 3980-A2-GB30-40 October 1998 T able B-1 (3 of 3) Result Codes Numbers (1) Description Word Numbers (2) 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 288[...]

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C-1 3980-A2-GB30-40 October 1998 T roubleshooting Overview Appendix B, Result Codes , points out basic problems that can occur when operating a 3800 Plus modem. Use T ables C-1 through C-6 to check out these problems. If you are having data communication difficulties, such as periodic character loss, random errors, or constant format errors, use th[...]

COMSPHERE 3800 Plus Modems C-2 October 1998 3980-A2-GB30-40 T able C-2 Modem – DTE Connection Symptom Action Modem does not accept or echo back A T commands V erify 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 [...]

T roubleshooting C-3 3980-A2-GB30-40 October 1998 T able 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. V erify that the originating modem is compatible. V erify that originating modem recog[...]

COMSPHERE 3800 Plus Modems C-4 October 1998 3980-A2-GB30-40 T able C-4 Online Operation Symptom Action Data scrambled V erify that the character format (data bits, parity , and stop bits) is set to the same value in both modems. Missing data during a transfer V erify that you are using the same method of flow control for both the modem and the DTE.[...]

D-1 3980-A2-GB30-40 October 1998 T echnical Specifications T able D-1 shows the technical specifications for 3800 Plus modems. T able D-1 (1 of 3) T echnical Specifications for COMSPHERE 3800 Plus Modems Specifications Criteria APPROV ALS (1 10 V ac, 60 Hz only) FCC Part 15 Class A FCC Part 68 Registration Number: (See label on modem.) UL 3810 Plus[...]

COMSPHERE 3800 Plus Modems D-2 October 1998 3980-A2-GB30-40 T able D-1 (2 of 3) T echnical Specifications for COMSPHERE 3800 Plus Modems Specifications Criteria COMP A TIBILITY DIAL-LINE MODULA TIONS 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 .32 terbo (19,20[...]

T echnical Specifications D-3 3980-A2-GB30-40 October 1998 T able D-1 (3 of 3) T echnical Specifications for COMSPHERE 3800 Plus Modems Specifications Criteria AC POWER REQUIREMENTS 3810 Plus 1 10 V ac, 50 to 60 Hz POWER CONSUMPTION 3810 Plus 8 watts (typical, including power supply , speaker off) 381 1 Plus 6 watts (typical, each card) Speaker con[...]

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E-1 3980-A2-GB30-40 October 1998 Pin Assignments 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. E[...]

COMSPHERE 3800 Plus Modems E-2 October 1998 3980-A2-GB30-40 EIA-232-D Pin Assignments T able E-1 lists the EIA-232-D pin assignments for the modem. T able E-1 EIA-232-D Pin Assignments RS-232 Pin Name EIA Circuit ITU-T Signal Source Circuit Function 1 — AA 101 — Shield 2 TXD BA 103 DTE Transmit Data 3 RXD BB 104 DCE Receive Data 4 RTS CA 105 DT[...]

Pin Assignments E-3 3980-A2-GB30-40 October 1998 VF Connector Pin Assignments T able E-2 lists the connector pin assignments for 3810 Plus modular jacks and the pin assignments for the TELCO jacks (Figure E-1). T able E-2 VF Connector Pin Assignments Pin Leased Dial/Leased T ype of T elco Jack Pi n L ease d Di a l/L ease d RJ1 1 JM8 1 4-Wire: TX 2-[...]

COMSPHERE 3800 Plus Modems E-4 October 1998 3980-A2-GB30-40 JM8 to RJ1 1 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 [...]

F-1 3980-A2-GB30-40 October 1998 ITU-T V .25bis Dialing Commands and Responses Overview 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 3800 Plus modems support V .25bis request and answer commands that initiate and cancel[...]

COMSPHERE 3800 Plus Modems F-2 October 1998 3980-A2-GB30-40 Call Response Call Failure Indication (CFI) The CFI response is issued to the DTE if the modem fails a CRN or CRS command. CFI is similar to the A T result codes BUSY , NO ANSWER, NO CARRIER, NO DIAL TONE, and ERROR. The CFI response format is: CFI xx Where: xx is one of ET Engaged tone NS[...]

ITU-T V .25bis Dialing Commands and Responses F-3 3980-A2-GB30-40 October 1998 Program Normal (PRN) 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 A T&Z command. The PRN command format is: PRN x;n Where: x is the directory location 1–10. n is the te[...]

COMSPHERE 3800 Plus Modems F-4 October 1998 3980-A2-GB30-40 T able F-1 V .25bis Commands V .25bis Command Description A T Command/ S-Register Equivalent CALL REQUEST COMMANDS CRN Call Request with Number Provided AT D CRS Call Request with Memory Address A TDS CALL ANSWER COMMANDS INC Incoming Call Indication RING DIC Disregard Incoming Call NONE C[...]

G-1 3980-A2-GB30-40 October 1998 Default Configuration Options Overview T able G-1 lists all default configuration options for the main four factory preset configurations. (Additional configuration options set by the optional Cellular (Mobile) and Cellular (PSTN) factory preset configurations are listed under the &F5 and &F6 commands in Cha[...]

COMSPHERE 3800 Plus Modems G-2 October 1998 3980-A2-GB30-40 T able G-1 (2 of 5) Factory Default Configuration Options Configuration Option Sync Leased Answer/ Originate Mode Default Settings Sync Dial Default Settings Async Dial and UNIX Dial Default Settings DTE DIALER DTE Dialer T ype A T Escape Character Escape Guard T ime Break Forces Escape Co[...]

Default Configuration Options G-3 3980-A2-GB30-40 October 1998 T able G-1 (3 of 5) Factory Default Configuration Options Configuration Option Sync Leased Answer/ Originate Mode Default Settings Sync Dial Default Settings Async Dial and UNIX Dial Default Settings DIAL LINE Modulation Dial Line Rate Automode Autorate Dial T ransmit Level V .22bis Gua[...]

COMSPHERE 3800 Plus Modems G-4 October 1998 3980-A2-GB30-40 T able G-1 (4 of 5) Factory Default Configuration Options Configuration Option Sync Leased Answer/ Originate Mode Default Settings Sync Dial Default Settings Async Dial and UNIX Dial Default Settings V .42/MNP/BUFFER Error Control Mode V .42bis Compression MNP5 Compression EC Negotiate Buf[...]

Default Configuration Options G-5 3980-A2-GB30-40 October 1998 T able G-1 (5 of 5) Factory Default Configuration Options Configuration Option Sync Leased Answer/ Originate Mode Default Settings Sync Dial Default Settings Async Dial and UNIX Dial Default Settings SECURITY Entry W ait T ime 2 VF Prompt T ype 2 DTE Password T ries 2 DTE Password T erm[...]

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H-1 3980-A2-GB30-40 October 1998 Equipment List Equipment Feature/Part Number Model 3810 Plus (1 10 v) 3980-A2-201 Model 381 1 Plus 3981-B1-001 V .29 Feature 3980-C1-002 V .33 Feature 3980-C1-003 Expanded Security Feature (for 381 1 Plus modems only) 3980-C1-004 Synchronous Data Compression (SDC) Feature 3980-F1-700 Enhanced Throughput Cellular (ET[...]

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I-1 3980-A2-GB30-40 October 1998 Synchronous Data Compression Overview The Paradyne proprietary Synchronous Data Compression (SDC) feature allows an increase of throughput in data transmission, and has an error correcting procedure so that transmitted data is less sensitive to channel disturbances. The ITU-T recommendations V .42bis and V .42 have [...]

COMSPHERE 3800 Plus Modems I-2 October 1998 3980-A2-GB30-40 When the transmit clock is provided by the DTE, the receive clock is set by the modem equal to the DTE clock. When SDC is in use, the Tx Clock Source configuration option cannot be set to Receiver Clock Loop. NOTE When faster speeds are used (above 57.6 kHz), and the transmit clock is prov[...]

Synchronous Data Compr ession I-3 3980-A2-GB30-40 October 1998 T able I-1 SDC Negotiation Configuration Scenarios Originating Modem Answering 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[...]

COMSPHERE 3800 Plus Modems I-4 October 1998 3980-A2-GB30-40 T uning SDC Efficiency SDC efficiency is dependent on the configuration parameters of the DTE and the modem. DTE Configuration The way DTE parameters are changed, and whether they can be changed, depends on your DTE. See the documentation that came with your DTE. DTE rate configuration par[...]

Glossary-1 3980-A2-GB30-40 October 1998 Glossary 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). A nonvolatile configuration area containing the most recently saved confi[...]

COMSPHERE 3800 Plus Modems Glossary-2 October 1998 3980-A2-GB30-40 T o 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 asymmet[...]

Glossary Glossary-3 3980-A2-GB30-40 October 1998 An outlet on equipment and cables that provides a connection. Central Processing Unit. The main or only computing device in a data processing system. Canadian Standards Association. Clear T o Send. A signal indicating that the device is ready for the DTE to transmit data. Usually occurs in response t[...]

COMSPHERE 3800 Plus Modems Glossary-4 October 1998 3980-A2-GB30-40 Data T erminal 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. A temporary work area used to view and change configuration options from the DCP without imp[...]

Glossary Glossary-5 3980-A2-GB30-40 October 1998 T he T elecommunications Standardization Sector of the International T elecommunications Union, an advisory committee established by the United Nations to recommend communications standards and policies. Before March 1993 it was called CCITT . A jack used for leased-line networks. Pins 1 and 2 are th[...]

COMSPHERE 3800 Plus Modems Glossary-6 October 1998 3980-A2-GB30-40 The state of a modem that is connected to and communicating with another modem. 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 b[...]

Glossary Glossary-7 3980-A2-GB30-40 October 1998 Shared Diagnostic Control Panel. A feature that allows carrier-mounted devices to share the same diagnostic control panel. 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 a[...]

COMSPHERE 3800 Plus Modems Glossary-8 October 1998 3980-A2-GB30-40 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. A modulation that adds the 19,200 bps and 16,800 bps data rates to the V .32bis data rates. It is a propriet[...]

Index-1 3980-A2-GB30-40 October 1998 Index A A/ (Repeat Last Command), 13-3 Abort (T est 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, 1 1-4, 1 1-10 Answer, 5-3 Answer Access security , 1 1-2 Answer Access Se[...]

COMSPHERE 3800 Plus Modems Index-2 October 1998 3980-A2-GB30-40 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 Buf fer Mode, 8-40 Busy T one Detect, 8-20 C cables auxiliary , E-4 crossover, E-4 Call Answer commands (V .25bis), F-2 [...]

Index Index-3 3980-A2-GB30-40 October 1998 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, [...]

COMSPHERE 3800 Plus Modems Index-4 October 1998 3980-A2-GB30-40 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-[...]

Index Index-5 3980-A2-GB30-40 October 1998 S14 (Asymmetric Rate Mode), 13-20 S15 (Asymmetric Rate Mode), 13-20 S18 (T est T imeout), 8-41, 13-20 S23 (Proactive Retrain), 13-20 S26 (R TS/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[...]

COMSPHERE 3800 Plus Modems Index-6 October 1998 3980-A2-GB30-40 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 .54 Device T ype, 8-42, 13-27 VF line requirements, D-3 VF Prompt T ype, 8-46 VF rate, 13-24 %B, %BL commands, 13-15 ITU–T/Bell Mode, [...]

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