Paradyne 3921PLUS - Manuals

Page 2 - Plus Modems; Trademarks; COPYRIGHT

COMSPHERE 392xPlus Modems A November 1996 3920-A2-GN31-30 COMSPHERE392x Plus Modems Models 3920 Plus and 3921Plus Installation and Operation Manual3920-A2-GN31-30 4th Edition (November 1996) Changes and enhancements to the product and to the information herein will be documented and issued as a new ...

Page 3 - Important Safety Instructions; Never install telephone wiring during a lightning storm.

Safety Instructions B 3920-A2-GN31-30 November 1996 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product orincluded in the manual. 2. This product is intended to be used with a three-wire grounding type plug – a plugwhich has a grounding pin. Th...

Page 4 - Notices

COMSPHERE 392xPlus Modems C November 1996 3920-A2-GN31-30 Notices

Page 5 - Table of Contents; Preface; vii; Introduction

i 3920-A2-GN31-30 November 1996 Table of Contents Preface Objectives and Reader Assumptions vii . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . ...

Page 6 - DCP Configuration

COMSPHERE 392xPlus Modems ii November 1996 3920-A2-GN31-30 Poll List Branch 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Branch 3-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Branch 3-54 . . . . . . . . ...

Page 7 - List of Figures; Figure

Table of Contents iii 3920-A2-GN31-30 November 1996 List of Figures Figure Page 1-1 Model 3920Plus Standalone Singleport and Multiport Modems 1-3 . . . . . . . . . . . . . . . 1-2 Model 3921Plus Singleport Modem 1-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Model ...

Page 8 - List of Tables; Table

COMSPHERE 392xPlus Modems iv November 1996 3920-A2-GN31-30 List of Tables Table Page 1-1 392xPlus Operational Modes 1-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Technical Specifications for 392xPlus Modems 1-13 . . . . . . . . . . . . . . . . . . . . ...

Page 10 - Objectives and Reader Assumptions; This manual describes how to install and operate the COMSPHERE; How to Use This Manual; Appendix A provides a menu tree for the 392xPlus modems.

vii 3920-A2-GN31-30 November 1996 Preface Objectives and Reader Assumptions This manual describes how to install and operate the COMSPHERE r Model 3920Plus standalone and Model 3921Plus carrier-mounted modems. Users of this manual must have a basicunderstanding of modems and their operation. How to ...

Page 11 - Related Documents; COMSPHERE 3000 Series Carrier, Installation Manual

COMSPHERE 392xPlus Modems viii November 1996 3920-A2-GN31-30 Related Documents 3000-A2-GA31 COMSPHERE 3000 Series Carrier, Installation Manual 3610-A2-GZ45 3600 Hubbing Device, Feature Number 3600-F3-300, InstallationInstructions 3920-A2-GK41 COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus,I...

Page 12 - Overview; The COMSPHERE

1-1 3920-A2-GN31-30 November 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMSPHERE 392xPlus Models 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3920Plus Standalone Singleport M...

Page 13 - Plus Models; Model 3921Plus carrier-mounted; NOTE; Throughout this manual, reference to the 392x; Plus Standalone Singleport Modem

COMSPHERE 392xPlus Modems 1-2 November 1996 3920-A2-GN31-30 COMSPHERE 392x Plus Models The COMSPHERE 392xPlus modem is available in the following four models: • Model 3920Plus standalone singleport modem (model no. 3920-A1-41x). • Model 3920Plus standalone multiport modem (model no. 3920-A1-40x). • ...

Page 14 - Plus Singleport and

Introduction 1-3 3920-A2-GN31-30 November 1996 DIAGNOSTIC CONTROL PANEL LCD AND KEYPAD STATUS INDICATORS SPEAKER POWER SUPPLY POWER CORD 496-14684-01 LEASED Model 3920 Plus Singleport and Multiport Housing Singleport ModemBack Panel Multiport ModemBack Panel POWERON/OFF DIAL DTE 1 NMS POWER IN DTE 2...

Page 15 - Plus Carrier-Mounted Singleport Modem

COMSPHERE 392xPlus Modems 1-4 November 1996 3920-A2-GN31-30 Model 3921 Plus Carrier-Mounted Singleport Modem The Model 3921Plus is a carrier-mounted singleport modem (Figure 1-2) capable of either4-wire/2-wire leased-line or dial operation. The modem installs into a COMSPHERE 3000 SeriesCarrier, occ...

Page 16 - Plus Singleport Modem

Introduction 1-5 3920-A2-GN31-30 November 1996 FACEPLATE 496-14178a-04 EIA232/V.24 EDGE CARD CONNECTOR FUTURE USE BACK CONNECTOR PLATE V .35 (3600/3500) RS366A/V .25 (3800) EIA232/V .24 TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 107 108 109 Pwr Alrm Test Dial RI Busy Serv SQ Status Front Panel 3921...

Page 17 - Plus Multiport Modem

COMSPHERE 392xPlus Modems 1-6 November 1996 3920-A2-GN31-30 49614423a-03 FACEPLATE EDGE CARD CONNECTORS PORT 3 PORT 4 PORT 1 PORT 2 3921 Plus TXD RXD RTS CTS DSR DTR LSD Pwr Alrm Test Dial RI Busy Serv SQ Status Front Panel Spkr 142 125 103 104 105 106 107 108 109 1 3 2 4 Port BACK CONNECTOR PLATES ...

Page 18 - There are two operational modes:; Plus Operational Modes; Plus Features; The 392xPlus modems share a wide variety of features.

Introduction 1-7 3920-A2-GN31-30 November 1996 392x Plus Operational Modes The 392xPlus operational modes determine how your modem performs in various applications.These operational modes are determined by your modem model and the selected configurationoptions. There are two operational modes: • Sin...

Page 19 - Plus Singleport Features; Features specific to 392xPlus singleport modems are:; Plus Multiport Features; Features specific to 392xPlus multiport modems are:; Applications; Multipoint

COMSPHERE 392xPlus Modems 1-8 November 1996 3920-A2-GN31-30 • Network management system (NMS) support through the COMSPHERE 6800 or6700 Series NMS using Advanced Diagnostic protocol (ADp). • Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-lineapplications. (The backup ...

Page 20 - MSD; When MSD mode is enabled:; Digital Bridge; Ports 3 and 4 are not available.

Introduction 1-9 3920-A2-GN31-30 November 1996 Dual-Leased Backup Dual-Leased Backup is available in all 392xPlus modems. It enables a 2-wire leased line to beused as the backup facility instead of the normal 2-wire dial line. Plug the leased line into the jacklabeled DIAL on the back panel of the m...

Page 21 - Symbol Rate; Multiport Backup

COMSPHERE 392xPlus Modems 1-10 November 1996 3920-A2-GN31-30 The CCITT standard for V.34 modulation includes dial- or leased-line operation. For properleased-line operation, one modem must be designated as the answer modem while the othermodem must be designated as the originate modem. The V.34 stan...

Page 22 - Government Requirements and Equipment Return; United States; NOTICE TO USERS OF THE PUBLIC SWITCHED TELEPHONE NETWORK; the services on which the equipment is to be connected.

Introduction 1-11 3920-A2-GN31-30 November 1996 Government Requirements and Equipment Return Certain governments require that instructions pertaining to modem connection to the publicswitched telephone network be included in the installation and operation manual. Specificinstructions are listed in t...

Page 23 - Canada; CAUTION

COMSPHERE 392xPlus Modems 1-12 November 1996 3920-A2-GN31-30 9. If you experience trouble with this equipment, please contact your sales or service representative (as appropriate) for repair or warranty information. If the product needs tobe returned to the company service center for repair, contact...

Page 24 - Technical Specifications; Technical Specifications for 392x

Introduction 1-13 3920-A2-GN31-30 November 1996 Technical Specifications Table 1-2 shows the technical specifications for the 392xPlus modems. Table 1-2 (1 of 2) Technical Specifications for 392x Plus Modems Specifications Description APPROVALS Model 3920 Plus, 3921Plus, and COMSPHERE 3000 Series Ca...

Page 26 - Modem Installation; For the standalone models

2-1 3920-A2-GN31-30 November 1996 Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392xPlus Modem Package 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipme...

Page 27 - For the carrier-mounted models; Customer-Supplied Equipment

COMSPHERE 392xPlus Modems 2-2 November 1996 3920-A2-GN31-30 For the carrier-mounted models • Installation instructions • Model 3921Plus modem • One (singleport) or two (multiport) connector plates with two DB-25-S edge card connectorson each plate If any hardware components are damaged, notify your ...

Page 28 - Plus Modem Installation

Modem Installation 2-3 3920-A2-GN31-30 November 1996 Model 3920 Plus Modem Installation Before installing your standalone modem, make sure your installation site is clean andwell-ventilated. Allow space around the modem for installing cables and telephone cords, andmake sure the modem is located wit...

Page 29 - Plus Multiport Back Panel and Power Supply; DTE Connection

COMSPHERE 392xPlus Modems 2-4 November 1996 3920-A2-GN31-30 8-POSITION, 8-CONDUCTOR PLUG FOR LEASED-LINE NETWORK OPERATION 6-POSITION, 4-CONDUCTOR PLUG FOR PERMISSIVE DIAL NETWORK OPERATION DB-25-P CONNECTOR FOR DATA TERMINAL EQUIPMENT OPERATION SUB-MINIATURE, 4-POSITION, 4-CONDUCTOR PLUG FOR NETWOR...

Page 30 - Power Supply Connection; Use the following steps to connect the modem to an ac power outlet:; Leased-Line Connection

Modem Installation 2-5 3920-A2-GN31-30 November 1996 Power Supply Connection Use the following steps to connect the modem to an ac power outlet: 1. Make sure the modem is powered OFF. 2. Insert the power supply’s 8-pin DIN connector into the modem’s back panel dc power receptacle, labeled PWR (Figur...

Page 31 - Network Management System Connection; Removing and Replacing the Model 3920; Disconnect the power cord from the ac power outlet.

COMSPHERE 392xPlus Modems 2-6 November 1996 3920-A2-GN31-30 Network Management System Connection Use the following steps to connect the modem to the network management system (NMS)interface: 1. Insert the sub-miniature, 4-conductor modular plug of the 3600 Hubbing Device into the jack labeled NMS (F...

Page 32 - use the same slot positions as that intended for the modem.; Figure 2-2. Modem’s Back Connector Plates

Modem Installation 2-7 3920-A2-GN31-30 November 1996 SDU is required when the modems in the carrier are controlled by an NMS, or when multiplecarriers in a cabinet configuration are to be controlled by a single shared diagnostic control panel(SDCP). The SDCP of the COMSPHERE 3000 Series Carrier is t...

Page 33 - Plus Modem

COMSPHERE 392xPlus Modems 2-8 November 1996 3920-A2-GN31-30 3000 SERIES CARRIER MODEL 3921 Plus MULTIPORT MODEM LATCH CIRCUIT CARD GUIDES 495-14708 SDU MODEL 3921 Plus SINGLEPORT MODEM LATCH CIRCUIT CARD GUIDES SDU 3000 SERIES CARRIER Figure 2-3. Installing the Model 3921 Plus Modem

Page 35 - earlier in this chapter.

COMSPHERE 392xPlus Modems 2-10 November 1996 3920-A2-GN31-30 6. Once you have determined that the modem is installed properly and completed its power-up self-test, rotate the circuit pack lock until it covers the faceplate latch(Figure 2-4) and tighten the retention screw on the circuit pack lock. T...

Page 36 - Removing and Replacing the Model 3921; Selecting Factory Configuration Options for 392x

Modem Installation 2-11 3920-A2-GN31-30 November 1996 Removing and Replacing the Model 3921 Plus Modem CAUTION When removing the Model 3921 Plus modem from the carrier, always use a ground strap when handling the modem. Alwaysstore the Model 3921 Plus modems in an antistatic bag when it is removed f...

Page 37 - The LCD now displays Ld EditArea frm.; factory preset configurations.; The LCD now displays Sav EditArea to.; key to

COMSPHERE 392xPlus Modems 2-12 November 1996 3920-A2-GN31-30 configuration, then you must change the factory setting using either the modem’s DCP (asdescribed in the following sections) or the AT command set. The purpose of having preset configurations is so that you can have a “head start” in getti...

Page 38 - DCP Operation

3-1 3920-A2-GN31-30 November 1996 DCP Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3920Plus Diagnostic C...

Page 40 - Plus Diagnostic Control Panel; Plus DCP; Plus Faceplate and Shared Diagnostic Control Panel (SDCP); Status Indicators

DCP Operation 3-3 3920-A2-GN31-30 November 1996 Model 3920 Plus Diagnostic Control Panel The diagnostic control panel (DCP) of the Model 3920Plus modem (Figure 3-1) contains statusindicators, pushbutton-type keys, an LCD, and speaker grill. PWR ALRM CTS TXD LSD RXD TEST RATE 105 106 103 109 108 142 ...

Page 41 - Plus Faceplates

COMSPHERE 392xPlus Modems 3-4 November 1996 3920-A2-GN31-30 TXD RXD RTS CTS DSR DTR LSD Pwr Alrm Test Dial RI Busy Serv SQ Status Front Panel Spkr 142 125 103 104 105 106 107 108 109 1 3 2 4 Port 3921 Plus OK Alrm In Out Status Diag Diag SDU TXD RXD RTS CTS DSR DTR LSD Pwr Alrm Test Dial RI Busy Ser...

Page 42 - Plus DCP LEDs; Pwr

DCP Operation 3-5 3920-A2-GN31-30 November 1996 Table 3-1 (1 of 2) 392x Plus DCP LEDs Label Color Indicates Pwr green Power has been applied to the modem. Alrm red Flashing – A major alarm has been detected in a remote 392x Plus modem. ON – A major alarm has been detected in the local modem. (For He...

Page 43 - The SDCP LEDs are listed and described in Table 3-2.

COMSPHERE 392xPlus Modems 3-6 November 1996 3920-A2-GN31-30 Table 3-1 (2 of 2) 392x Plus DCP LEDs Label Indicates Color Port* 1,2,3,4(3921Plusmultiport only) green ON – The selected port* is one of the mux ports (either 1, 2, 3, or 4). OFF – The port* is not selected. TXD/103* green The modem is rec...

Page 44 - Diagnostic Control Panel Operation; Configure; Plus LCD and Keypad; LCD Display; or; Hidden Choice Indicators; Right Scroll Indicator >

DCP Operation 3-7 3920-A2-GN31-30 November 1996 Diagnostic Control Panel Operation The 392xPlus modem’s diagnostic control panel (DCP) is the user interface to all functions used toconfigure and control the modem. In addition to the status LEDs, this interface includes the liquidcrystal display (LCD...

Page 45 - Other Indicators; Keypad

COMSPHERE 392xPlus Modems 3-8 November 1996 3920-A2-GN31-30 Other Indicators Other indicators may turn on depending on existing conditions, such as error detection,informational alerts, and warnings. These indicators appear on the top or bottom line of the LCD. Remote Mode Indicator If the local 392...

Page 46 - Keys; The; key appears on the optional SDCP of the COMSPHERE 3000 Series; Menu Structure

DCP Operation 3-9 3920-A2-GN31-30 November 1996 F1 F2 F3 Keys Function keys F1, F2, and F3 select the LCD choice that appears above the function key.Refer to the Summary section in Chapter 4 for the exception. If the displayed LCD choice spans more than one function key, then any of the functionkeys...

Page 47 - The menu tree contains the following branches:

COMSPHERE 392xPlus Modems 3-10 November 1996 3920-A2-GN31-30 The menu tree contains the following branches: Status — Used to monitor the current status of the VF line and DTE interface as wellas view the identity of the modem. Configure — Used to change and save the modem’s configuration options. PL...

Page 48 - Top-Level Menu Status and Operational Messages; Top-Level Menu Status; Normal Operation

DCP Operation 3-11 3920-A2-GN31-30 November 1996 Top-Level Menu Status and Operational Messages Access to all menu tree branches from the DCP begins at the Top-Level menu, the head of themenu hierarchy. The LCD’s top line identifies the modem status, as listed in Table 3-3, while thebottom line disp...

Page 49 - Call Failure

COMSPHERE 392xPlus Modems 3-12 November 1996 3920-A2-GN31-30 Table 3-3 (2 of 3) Top-Level Menu Status Status Indicates Message Call Failure Busy Signal The answering modem is busy. DelayedNumber { As a result of failed call attempts, this number can not be called at this time.Please try again later....

Page 50 - Call Disconnect

DCP Operation 3-13 3920-A2-GN31-30 November 1996 Table 3-3 (3 of 3) Top-Level Menu Status Status Indicates Message Call Disconnect ATH Disconnect The modem has disconnected due to an ATH command. Bad Lines Disc The modem has disconnected because the lines do not support themodulation and/or data rat...

Page 51 - Messages listed in Table 3-5 are dial access security messages.

COMSPHERE 392xPlus Modems 3-14 November 1996 3920-A2-GN31-30 Messages listed in Table 3-4 are common operational messages that occur during modemoperation. These messages normally appear on the second line of the LCD. Table 3-4 Common Operational Messages Common Operational Message Indicates Please ...

Page 52 - Quick Configuration Display

DCP Operation 3-15 3920-A2-GN31-30 November 1996 The Top-Level menu’s main branches appear on the LCD in the order of Status, Configure,Control, Test, Call Setup, Talk/Data, Security, and Remote. These branches are discussed in thischapter except for the Configure branch which is reserved for Chapte...

Page 54 - Status Branch

DCP Operation 3-17 3920-A2-GN31-30 November 1996 Status Branch The Status branch of the Top-Level menu allows you to view the current status of the leased-lineor dial connection, the identity (for example, serial number and model number) of your equipment,and the DTE interface. Configure PList Contr...

Page 55 - DeviceHS VF; present, the word Normal appears on the LCD.; Major

COMSPHERE 392xPlus Modems 3-18 November 1996 3920-A2-GN31-30 Device Health and Status (DeviceHS) DeviceHS provides a ‘‘snapshot” of current modem alarms which are active at the time theDeviceHS function is selected. To access DeviceHS from the Status branch, make the following selection: F1 Status: ...

Page 56 - Health and Status Messages

DCP Operation 3-19 3920-A2-GN31-30 November 1996 Table 3-6 (2 of 3) Health and Status Messages Type Indicates Message Status Subtree Truncate Downstream health and status information has been truncated because itoverflowed system limits. There is a large amount of health and statusinformation in the...

Page 57 - Security; To exit DeviceHS and remain in the Status Branch, press the; VF; To access VF from the Status branch, make the following selection:

COMSPHERE 392xPlus Modems 3-20 November 1996 3920-A2-GN31-30 Table 3-6 (3 of 3) Health and Status Messages Type Indicates Message Security Database Reset The security database has been reset (passwords erased). Password Protect Security password protection is enabled. Mode Change There has been a ch...

Page 58 - Displaying VF Conditions; To display VF conditions, select Display from the Status:VF screen.; Not all conditions are available at 4800 bps.; SigQual

DCP Operation 3-21 3920-A2-GN31-30 November 1996 Displaying VF Conditions F1 Status:VFDisplay Clear F2 F3 To display VF conditions, select Display from the Status:VF screen. F1 Status:VF > SigQual=Excelent F2 F3 If the modem is receiving a signal, the signal quality appears on the LCD’s bottom li...

Page 59 - Clearing VF Counters

COMSPHERE 392xPlus Modems 3-22 November 1996 3920-A2-GN31-30 EchoFreqOff Echo Frequency Offset displays the frequency offset of the far end echo. Thisparameter appears for V.34, V.32 terbo, V.32bis, and V.32 modulations (in2-wire only). Phase Hts Phase Hits reports the total hit count of sudden unco...

Page 60 - Identity; FRev

DCP Operation 3-23 3920-A2-GN31-30 November 1996 F1 VF Counter ClearCommand Complete F2 F3 The message Command Complete appears on the LCD’s bottom line indicating the VF Countersare cleared. To exit VF and remain in the Status Branch, press the key. To exit and return to the Top-Level menu, press t...

Page 61 - DTE; Press the

COMSPHERE 392xPlus Modems 3-24 November 1996 3920-A2-GN31-30 DTE DTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, TST,TXD, RXD, RTS, and CTS. The interface leads status is updated every 5 seconds. To access DTE from the Status branch, make the following selecti...

Page 62 - To access V.34 from the Status branch, make the following selection:; TxRate

DCP Operation 3-25 3920-A2-GN31-30 November 1996 V.34 When running V.34 modulation, this function displays information about the modem’s receivingand transmitting data rate, symbol rate, transmitting level, and asymmetric rate. NOTE The V.34 status display is available only when the modem isconfigur...

Page 63 - Backup

COMSPHERE 392xPlus Modems 3-26 November 1996 3920-A2-GN31-30 Backup The Status Backup function displays the configuration of the modem’s current operating linefacility and the configuration and condition of the inactive line. NOTE The modem’s rear panel has two line interface jacks: LEASE andDIAL (s...

Page 64 - XXXX represents the condition code of the inactive line.; To exit this function and remain in the Status branch, press the

DCP Operation 3-27 3920-A2-GN31-30 November 1996 Table 3-7 provides information about the Status Backup screens. The first column lists all possibleconfigurations for the modem’s currently active line. The second column lists all possibleconfigurations for the modem’s inactive lines. The third colum...

Page 65 - Options; Record

COMSPHERE 392xPlus Modems 3-28 November 1996 3920-A2-GN31-30 Options The Options Status function displays all optional firmware features currently installed in themodem. If no firmware options are installed, None_Installed appears on the LCD. To access Options from the Status branch, make the follow...

Page 66 - Service Log

DCP Operation 3-29 3920-A2-GN31-30 November 1996 F1 Record StatusDisplay Clear F2 F3 To display sequence faults, select Display. F1 Record Number 1 Modem O.K. F2 F3 The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and areidentified by a number in the upper ri...

Page 67 - Select Nxt to scroll through the entries in the Service Log.; Configure Branch; The Poll List function is not available in:

COMSPHERE 392xPlus Modems 3-30 November 1996 3920-A2-GN31-30 Select Nxt to scroll through the entries in the Service Log. 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. Configure Branch The Configure branch of the LCD al...

Page 68 - Control; Display; Display allows you to view the modem’s poll list.; yyyyyy

DCP Operation 3-31 3920-A2-GN31-30 November 1996 F1 Leased:28.8PList Control F2 F3 Press the key until PList appears. Select PList. Within a network link, a control modem can communicate with a tributary modem by using thetributary modem’s network management address for polling functions. Each TMp t...

Page 69 - Clear; The Clear function does not appear in Remote mode.; The Change function does not appear in Remote mode.; Change

COMSPHERE 392xPlus Modems 3-32 November 1996 3920-A2-GN31-30 Select Nxt to scroll through the entries in the Active or Skip poll lists. To exit this function and remain in the PList Display branch, press the key. To exit and return to the Top-Level menu, press the key. Clear The Clear function does ...

Page 70 - Add

DCP Operation 3-33 3920-A2-GN31-30 November 1996 To implement Change, select the appropriate function (Active, Delete, or Skip). (For Skip, you willneed to press the key until Skip appears.) F1 Poll List:yyyyyyEnt xxx F2 F3 The function field (yyyyyy) displays the function selected (Active, Delete, ...

Page 71 - To exit this function and remain in the PList branch, press the; Acquire; The Acquire function does not appear in Remote mode.; Select Abort or allow the function to complete.

COMSPHERE 392xPlus Modems 3-34 November 1996 3920-A2-GN31-30 The message Command Complete appears on the LCD to indicate that the tributary modem willbe added to the control modem’s poll list. To exit this function and remain in the PList branch, press the key. To exit and return to the Top-Level me...

Page 72 - Control Branch; Test

DCP Operation 3-35 3920-A2-GN31-30 November 1996 F1 Poll List:AcquirNum Acquired yyy F2 F3 The number field (yyy) indicates the total number of devices acquired for the poll list. To exit this function and remain in the PList branch, press the key. To exit and return to the Top-Level menu, press the...

Page 73 - Speaker; Off

COMSPHERE 392xPlus Modems 3-36 November 1996 3920-A2-GN31-30 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 tothe Misc section in Chapter 4. To acce...

Page 74 - Reset; Data Stream

DCP Operation 3-37 3920-A2-GN31-30 November 1996 Reset 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. Configuration options stored in an Active (Saved) configuration ...

Page 75 - Selecting All Ports; Select DS Port

COMSPHERE 392xPlus Modems 3-38 November 1996 3920-A2-GN31-30 F1 Data StreamPort1 Disable F2 F3 The port field (for example, Port1) displays the selected port. The available Data Stream action (Disable or Enable) appears on the second line of the LCDbeside the port field. If the modem’s data transmit...

Page 76 - EIA LEDs

DCP Operation 3-39 3920-A2-GN31-30 November 1996 F1 Select DS Port > All F2 F3 To change the data stream on all ports again, press the F1 key. or To exit this function and remain in the Control branch, press the key. To exit and return to the Top-Level menu, press the key. EIA LEDs This function ...

Page 77 - The Port 1 interface is the only display allowed on the 3921; Make Busy/Remove Make Busy; WARNING; RemoveMakeBusy appears.

COMSPHERE 392xPlus Modems 3-40 November 1996 3920-A2-GN31-30 Press the F1 key until the appropriate digital interface appears. Select the appropriate interface bypressing the corresponding function key. After selecting the desired interface, the message Command Complete appears on the bottom lineof ...

Page 78 - Service Line/Disconnect Service Line

DCP Operation 3-41 3920-A2-GN31-30 November 1996 F1 Control:RemoveMakeBusy F2 F3 Press any function key to select RemoveMakeBusy. The message Command Complete appearson the LCD. Service Line/Disconnect Service Line The Service Line/Disconnect Service Line is only available in Models 3921-B1-001 and3...

Page 79 - key; Download Software; When implementing a Clone Remote operation, the following is true:; Selecting Clone Remote; modems cannot be used in cloning operations with 392x

COMSPHERE 392xPlus Modems 3-42 November 1996 3920-A2-GN31-30 To disconnect the modem from the service line and resume normal operation, press the key (returning to Control branch). From the Control branch, press the key until DiscServiceLine appears. F1 Control:DiscServiceLine F2 F3 Press F1 (DiscSe...

Page 80 - Clone Remote in Point-to-Point Configurations

DCP Operation 3-43 3920-A2-GN31-30 November 1996 F1 Control:Download_Code F2 F3 Press the key until Download_Code appears. Press any function key to select Download_Code. The DwnLoadSoftware screen appears. F1 DwnLoadSoftware >Clone_Remote F2 F3 Press any function key to select Clone_Remote. The ...

Page 81 - Cloning DC Broadcast Remote

COMSPHERE 392xPlus Modems 3-44 November 1996 3920-A2-GN31-30 From the Choose DLL Type screen, press the F1 key to select SC_Clone to request the transfer ofan exact copy of the tributary modem’s firmware to the VF connected control modem. Proceed to the section titled Implementing a Clone Remote Ope...

Page 82 - Clone Remote in Multipoint Configurations; tributary modem cannot download; For Multiple download configurations, ensure that:; — all 391x modems are removed from the active poll list.

DCP Operation 3-45 3920-A2-GN31-30 November 1996 Clone Remote in Multipoint Configurations A Trellis Multipoint (TMp) control modem can be used to download firmware to just one tributarymodem (Single) or to all of its tributary modems (Multiple). NOTE A Trellis Multipoint (TMp) tributary modem canno...

Page 83 - Cloning a Single TMp Remote

COMSPHERE 392xPlus Modems 3-46 November 1996 3920-A2-GN31-30 Cloning a Single TMp Remote F1 Choose DLL Type >Single Multiple F2 F3 Press the F1 key to select Single Clone Remote. F1 Choose Address:Ent xxx F2 F3 The address field (xxx) displays the network management address of the modem that rece...

Page 84 - Cloning a Multiple TMp Remote

DCP Operation 3-47 3920-A2-GN31-30 November 1996 Cloning a Multiple TMp Remote F1 Choose DLL Type >Single Multiple F2 F3 Press the F3 key to select Multiple Clone Remote. After completing this action, proceed to the next section titled Implementing a Clone RemoteOperation. Viewing Multiple TMp Cl...

Page 85 - Implementing a Clone Remote Operation; key to display the Reprogram_Remote selection.

COMSPHERE 392xPlus Modems 3-48 November 1996 3920-A2-GN31-30 Implementing a Clone Remote Operation WARNING The modem begins a transfer of its own program to the remotemodem. This process takes the communication linkout-of-service for a period of time depending on the data rateof the link. If the Clo...

Page 86 - Incompat Modulat; The remote modem’s Access from Remote configuration is disabled.; Password Invalid; There is no connection between the local and remote modem.

DCP Operation 3-49 3920-A2-GN31-30 November 1996 If unsuccessful, the modem remains in the Download Transfer mode. The LCD’s top line displaysRemClone Failed and the bottom line displays one of the following messages: Incompat Modulat The modems are connected, but are using a modulation scheme other...

Page 87 - Automatic Firmware Download; Automatic Firmware Download Failure

COMSPHERE 392xPlus Modems 3-50 November 1996 3920-A2-GN31-30 Automatic Firmware Download New releases may be available for the 392xPlus modems. The latest 392xPlus firmware isavailable at no charge from the Automatic Firmware Download Center. Refer to page A in thefront of this document for contact ...

Page 88 - VF Thresholds Update; thresholds and their valid ranges and default values.

DCP Operation 3-51 3920-A2-GN31-30 November 1996 VF Thresholds Update The VF Thresholds Update function allows you to set the thresholds that determine the Health andStatus alarm conditions for the VF parameters. Refer to Table 3-8 in this section for VF thresholds and their valid ranges and default...

Page 89 - If you want to modify additional VF thresholds, select Nxt.

COMSPHERE 392xPlus Modems 3-52 November 1996 3920-A2-GN31-30 NOTE Note that a warning ( ) appears on the second line of the screen ifyou enter an invalid VF threshold (out of range). You cannot saveyour edits until all thresholds are within their valid range. Refer toTable 3-8 for valid VF threshold...

Page 90 - To correct the invalid VF threshold, press the; Valid Ranges for VF Thresholds

DCP Operation 3-53 3920-A2-GN31-30 November 1996 If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory.When the Save completes, the message Save Completed appears. F1 Save VF ThreshThd Out of Range F2 F3 If the edited VF threshold is invalid (out of range), the ...

Page 91 - Test Branch

COMSPHERE 392xPlus Modems 3-54 November 1996 3920-A2-GN31-30 Table 3-8 (2 of 2) Valid Ranges for VF Thresholds VF Thresholds Default Values Valid Ranges Far Echo 0 –38 dBm Above –20 dBm Frequency Offset 1 Hz to 15 Hz Above 4 Hz Phase Jitter 1 degree to 45 degrees Above 9 degrees Phase Hits 1 to 255 ...

Page 92 - Abort; To access Abort from the Test branch, make the following selection:

DCP Operation 3-55 3920-A2-GN31-30 November 1996 To access the Test branch from the Top-Level menu, make the following selections: F1 Leased:28.8Control Test F2 F3 Press the key until Test appears. Select Test. Abort Abort ends any test that is in progress and brings the modem back to the normal mod...

Page 93 - Self; To access Self from the Test branch, make the following selection:; To exit this function and remain in the Test branch, press the

COMSPHERE 392xPlus Modems 3-56 November 1996 3920-A2-GN31-30 Self Self performs an internal self-test of the modem, which takes less than a minute to complete. Themodem must be offline; otherwise, Invalid Command appears. WARNING When this test is run in Remote mode, it causes the Remotemode session...

Page 94 - Loc Analog Loop

DCP Operation 3-57 3920-A2-GN31-30 November 1996 Loc Analog Loop This test is not available when using V.34 modulation in Multiport mode. Loc Analog Loop performs a local analog loopback (CCITT V.54 Loop 3), Figure 3-4, that verifiesmodem operation as well as the connection between the DTE and modem...

Page 95 - Rem Digital Loop; This test is not available when:

COMSPHERE 392xPlus Modems 3-58 November 1996 3920-A2-GN31-30 NOTE The test delays 15 to 30 seconds to allow any outstanding networkmanagement messages to propagate before the VF channel isinterrupted by the test. The message Started appears on the LCD, and the Test LED lights for the duration of the...

Page 96 - Pick Test Port

DCP Operation 3-59 3920-A2-GN31-30 November 1996 To access Rem_Digital_Loop from the Test branch, make the following selections: F1 Test:Rem_Digital_Loop F2 F3 Press the key until Rem_Digital_Loop appears. Press any function key to start this test. F1 Pick Test Port > Port1 Port2 F2 F3 Select the...

Page 97 - Loc Digital Loop; A TMp tributary cannot perform a local digital loopback test.

COMSPHERE 392xPlus Modems 3-60 November 1996 3920-A2-GN31-30 Loc Digital Loop Loc Digital Loop is issued by a local modem and forces it to loopback any data received from theremote modem (Figure 3-6 ). (This test operates the same as a CCITT V.54 Loop 2 except it isissued at your modem.) This is use...

Page 98 - This screen does not appear in Singleport mode.; Pattern; Figure 3-7. Pattern Test and Local Analog Loopback Test

DCP Operation 3-61 3920-A2-GN31-30 November 1996 This screen does not appear in Singleport mode. F1 Test:P1:Dig LoopStarted F2 F3 The message Started appears on the LCD and the Test LED lights. The port field (for example, P1for Port 1) displays the port that is currently selected. You may see P1, P...

Page 99 - Figure 3-8. Pattern Test and Digital Loopback Test

COMSPHERE 392xPlus Modems 3-62 November 1996 3920-A2-GN31-30 Figure 3-8. Pattern Test and Digital Loopback Test Figure 3-9. End-to-End Pattern Test To access Pattern from the Test branch, make the following selections: F1 Test: < Pattern F2 F3 Press the key until Pattern appears. Select Pattern t...

Page 101 - Sub-Network Health and Status Branch; SubHS

COMSPHERE 392xPlus Modems 3-64 November 1996 3920-A2-GN31-30 Sub-Network Health and Status Branch The Sub-Network Health and Status (SubHS) function is not available on multipointtributary modems or with certain modulations (V.29, V.33, V.22bis, and V.27bis). The SubHS branch of the Top-Level menu a...

Page 102 - Call Setup Branch; The Call Setup function is not available in TMp Control mode.

DCP Operation 3-65 3920-A2-GN31-30 November 1996 When you select SubHS, xxx Displays the network management address of the downstream modem selected. yyyyyy Displays the status of the downstream modem. This message is updated everyseveral seconds to display the latest status. MAJOR, MINOR, and STATU...

Page 103 - Dial; Dial Disconnect

COMSPHERE 392xPlus Modems 3-66 November 1996 3920-A2-GN31-30 To access the Call Setup branch from the Top-Level menu, make the following selections: F1 Leased:28.8Call_Setup F2 F3 Press the key until Call_Setup appears. Select Call Setup. Dial For dial backup applications, Dial allows you to dial an...

Page 104 - Disconnect

DCP Operation 3-67 3920-A2-GN31-30 November 1996 F1 DialDirectory:01Off Hook F2 F3 The Call Setup status Off Hook appears during the connection process. If the connection is successful, the modem is online and one of the Normal Operation statusmessages (Table 3-3) appears on the LCD. If the connecti...

Page 105 - Answer; Dial Standby/Return to Dial

COMSPHERE 392xPlus Modems 3-68 November 1996 3920-A2-GN31-30 Answer For dial backup applications, Answer allows the modem to go off-hook, generate an answer tone,and begin the handshaking process with the calling modem. Use the Answer function when theAuto-Answer Ring Count configuration option is d...

Page 107 - Change Directory

COMSPHERE 392xPlus Modems 3-70 November 1996 3920-A2-GN31-30 Change Directory Change Directory allows you to enter or modify telephone numbers. The modem has nonvolatilememory locations that allow you to store up to 24 telephone numbers. Each directory location canaccept up to 40 characters; this in...

Page 108 - Nxt

DCP Operation 3-71 3920-A2-GN31-30 November 1996 Entering Telephone Numbers and Dial Command Modifiers into Directory Locations The following example uses an empty directory location for describing how to enter a telephonenumber. If you want to change an existing telephone number in any of the 24 di...

Page 109 - Valid Dial Command Modifiers; Space; Directory Status (may not appear for certain countries); Directory Status displays the status of each directory location.

COMSPHERE 392xPlus Modems 3-72 November 1996 3920-A2-GN31-30 Table 3-9 Valid Dial Command Modifiers Dial command modifiers are parameters entered in the dial command string which specify how, when, and what numberto dial. The following is a list of parameters the 392x Plus modems recognize: T — Tone...

Page 110 - No Number

DCP Operation 3-73 3920-A2-GN31-30 November 1996 F1 Number StatusNxt 01:Allowed F2 F3 Select Nxt to display other directory locations. The status of a directory location can be: No Number The directory location is empty. Allowed The number in this directory location may be dialed at this time. Delay...

Page 111 - Line Dialer section in Chapter 4) must be set to

COMSPHERE 392xPlus Modems 3-74 November 1996 3920-A2-GN31-30 The following sections describe the uses of the Talk/Data function. Manual Dialing When the Remote Modem is Configured for Auto-Answer NOTE On the remote modem, the Line Current Disconnect configurationoption (refer to the Line Dialer sect...

Page 112 - Line Dialer section in Chapter 4) must be set to Disable.; Security Branch

DCP Operation 3-75 3920-A2-GN31-30 November 1996 Manual Dialing When the Remote Modem is Configured for Manual Answer NOTE On both modems, the Line Current Disconnect configuration option(refer to the Line Dialer section in Chapter 4) must be set to Disable. If you are originating a call using a tel...

Page 113 - Remote Branch

COMSPHERE 392xPlus Modems 3-76 November 1996 3920-A2-GN31-30 Remote Branch The Remote branch of the Top-Level menu allows you to control the remote modem’s DCP usingthe local modem’s DCP. This function allows you to change configuration options and control testfunctions in a remote modem. Any change...

Page 114 - xxx

DCP Operation 3-77 3920-A2-GN31-30 November 1996 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 datarate, but it also interrupts data flow because primary data...

Page 115 - yyyyyyyy

COMSPHERE 392xPlus Modems 3-78 November 1996 3920-A2-GN31-30 For Trellis Multipoint (TMp) modems (control or tributary), you must specify the remote accesspassword of the modem that will be accessed by the Remote function. The following display doesnot appear in point-to-point modems. F1 Choose Pass...

Page 116 - ExitRem

DCP Operation 3-79 3920-A2-GN31-30 November 1996 F1 Leased:28.8Control ExitRem F2 F3 If the remote modem accepts the password and the entry is successful, the Top-Level menu of theremote modem appears on the local modem’s LCD. An appears in the upper right-hand cornerindicating that what is displaye...

Page 117 - Diagnostic Control Panel Access

DCP Operation 3-81 3920-A2-GN31-30 November 1996 Diagnostic Control Panel Access NOTE This page of the manual is self supporting and can be removed toprevent unwanted knowledge of the DCP security accessselections. Use the DCP security access function to “lock” the DCP of any 392xPlus modem and prev...

Page 121 - The Configure branch consists of the following three levels:; Editing and Saving a Configuration Option

COMSPHERE 392xPlus Modems 4-4 November 1996 3920-A2-GN31-30 The Configure branch consists of the following three levels: • Ld EditArea frm. Allows the selection of the Active (Operating), Active (Saved),Customer 1, Customer 2, and Factory configuration areas. • Choose Function. Allows you to make ch...

Page 122 - Originate

DCP Configuration 4-5 3920-A2-GN31-30 November 1996 F1 Ld Fact Preset: > Sync_Leased F2 F3 Select Sync_Leased. F1 Choose Mode:Answer Originate F2 F3 Select Answer. F1 Choose Function:Edit Save F2 F3 Select Edit. F1 Edit StrapGroup: > DTE_Interface F2 F3 F1 Edit StrapGroupTest Misc F2 F3 Scroll...

Page 123 - StrapsWhenDisc

COMSPHERE 392xPlus Modems 4-6 November 1996 3920-A2-GN31-30 F1 StrapsWhenDisc > Nxt No_Change F2 F3 F1 RemAccssPasswrd:Nxt 00000000 F2 F3 Select Nxt until RemAccssPasswrd appears. F1 RemAccssPasswrd:Nxt 10000000 F2 F3 Select the F2 ( ) key to increment password values. F1 RemAccssPasswrd:Nxt 1000...

Page 124 - Save; Summary

DCP Configuration 4-7 3920-A2-GN31-30 November 1996 To save the new password to a configuration area, make the following selections: F1 RemAccssPasswrd:Nxt 12345678 F2 F3 Press the key to scroll up (twice). F1 Choose FunctionEdit Save F2 F3 Select Save. F1 Sav EditArea to > Active(Saved) F2 F3 Se...

Page 125 - Configuration Tables; Multiport Mode

COMSPHERE 392xPlus Modems 4-8 November 1996 3920-A2-GN31-30 Configuration Tables Each modem operates in either the Multiport or Singleport mode depending on the modem’sconfiguration (refer to 392xPlus Operational Modes in Chapter 1). The modem’s configuration options are arranged into six groups in ...

Page 127 - DTE Interface — Multiport Mode; DTE Interface Configuration Options — Multiport Mode; Disable – Disables MUX Mode on the modem. Refer to the

COMSPHERE 392xPlus Modems 4-10 November 1996 3920-A2-GN31-30 DTE Interface — Multiport Mode l The DTE Interface configuration options contain EIA-232-D (CCITT V.24) and asynchronouscharacter format information essential for maintaining a connection and for transmitting databetween the DTEs and the m...

Page 128 - Disable – Disregards all CT111 Rate Control.

DCP Configuration 4-11 3920-A2-GN31-30 November 1996 Table 4-1 (2 of 9) DTE Interface Configuration Options — Multiport Mode l Bakup_TXClk_Src: InternalNxt Internal RXC_Loop Port1 Port2 Port3 Port4 This configuration option only appears when Dual_Leased_Ln is configured for Enable. Backup Transmit C...

Page 130 - =Sync – The asynchronous data is equal to the synchronous rate.

DCP Configuration 4-13 3920-A2-GN31-30 November 1996 Table 4-1 (4 of 9) DTE Interface Configuration Options — Multiport Mode l Rate at 7200Nxt Disable 7200 4800 2400 1200 Rate at 7200. When the modem rate is 7200 bps the port rate will be as selected by this configuration option (Disable or7200 to 1...

Page 132 - Disable – The antistreaming function is not in effect.

DCP Configuration 4-15 3920-A2-GN31-30 November 1996 Table 4-1 (6 of 9) DTE Interface Configuration Options — Multiport Mode l RTS Action: Stndrd_RS232Nxt Stndrd_RS232 Ignore Sim_Cntl_Car Request-to-Send Action. RTS is a signal from the DTE indicating the DTE has data to send. Standard RS232 – Allow...

Page 133 - Forced On – Forces LSD to be ON at all times.

COMSPHERE 392xPlus Modems 4-16 November 1996 3920-A2-GN31-30 Table 4-1 (7 of 9) DTE Interface Configuration Options — Multiport Mode l RTS/CTS Delay: 0msecNxt 0msec 10msec 50msec 150msec 600msec 5 Request-to-Send/Clear-to-Send Delay. RTS/CTS Delay sets the delay time between the modem receiving RTS ...

Page 134 - Disable – Disregards the DTEs CT111 signal.

DCP Configuration 4-17 3920-A2-GN31-30 November 1996 Table 4-1 (8 of 9) DTE Interface Configuration Options — Multiport Mode l CT111 Control: DisableNxt Disable Enable This configuration option does not appear when V.34 is enabled for a leased or dial line. CT111 Control. Used in conjunction with CT...

Page 135 - Primary data can only be extended one link.

COMSPHERE 392xPlus Modems 4-18 November 1996 3920-A2-GN31-30 Table 4-1 (9 of 9) DTE Interface Configuration Options — Multiport Mode l Extend Main Ch.: DisableNxt Disable Enable Primary data can only be extended one link. Extend Main Channel. Supports extended diagnostics. Specifies whether there is...

Page 136 - Line Dialer — Multiport Mode; Line Dialer Configuration Options — Multiport Mode; NOTE: Pulse Mode is disabled in Denmark and in Sweden.

DCP Configuration 4-19 3920-A2-GN31-30 November 1996 Line Dialer — Multiport Mode l The Line Dialer configuration options establish parameters used by the modem to answer ororiginate calls. Table 4-2 shows each Line Dialer configuration option as it appears on the LCD, with the SyncLeased factory de...

Page 138 - Disable – Modem does not disconnect if carrier turns OFF.

DCP Configuration 4-21 3920-A2-GN31-30 November 1996 Table 4-2 (3 of 3) Line Dialer Configuration Options — Multiport Mode l No Carrier Disc: 2secNxt 2sec Disable 5sec 10sec 20sec No Carrier Disconnect. If the modem no longer receives carrier from the remote modem, it disconnects the call. Thisconfi...

Page 139 - Dial Line — Multiport Mode; Dial Line Configuration Options — Multiport Mode

COMSPHERE 392xPlus Modems 4-22 November 1996 3920-A2-GN31-30 Dial Line — Multiport Mode l The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 4-3 shows each Dial Line configuration option as it appears on the LCD, with the SyncLeased factory defau...

Page 141 - Leased Line — Multiport Mode; Leased Line Configuration Options — Multiport Mode

COMSPHERE 392xPlus Modems 4-24 November 1996 3920-A2-GN31-30 Leased Line — Multiport Mode l The Leased Line configuration options only appear when the Sync Leased factory preset templateis selected. They are used to configure the modem for operation over leased lines. Table 4-4 shows each Leased Lin...

Page 143 - This configuration option does not appear when V.34 is enabled.

COMSPHERE 392xPlus Modems 4-26 November 1996 3920-A2-GN31-30 Table 4-4 (3 of 3) Leased Line Configuration Options — Multiport Mode l SpecialStandby: DisableNxt Disable Enable This configuration option is only available if Automatic Dial Standby is configured for 15min, 1hr, 4hr orTest(2min) and Leas...

Page 144 - Test — Multiport; The Test configuration option determines the duration of a test.; Test Configuration Options — Multiport Mode; Disable – Allows a test to run indefinitely.

DCP Configuration 4-27 3920-A2-GN31-30 November 1996 Test — Multiport l The Test configuration option determines the duration of a test. Table 4-5 shows the Test configuration option as it appears on the LCD, with the Sync Leasedfactory default setting (the default value if the modem is just being i...

Page 145 - Misc — Multiport; Miscellaneous Configuration Options — Multiport Mode; Enable – Allows access from a remote modem.

COMSPHERE 392xPlus Modems 4-28 November 1996 3920-A2-GN31-30 Misc — Multiport l The Miscellaneous configuration options determine specifics for various functions, includingnetwork management parameters and remote modem access. Table 4-6 shows each Misc (Miscellaneous) configuration option as it appe...

Page 146 - Disable – Modem does not use the single number callback function.

DCP Configuration 4-29 3920-A2-GN31-30 November 1996 Table 4-6 (2 of 3) Miscellaneous Configuration Options — Multiport Mode l Dir#1_Callback: DisableNxt Disable Enable Directory Location 1 Callback. This configuration option controls whether or not the modem’s single number callbackfunction is used...

Page 147 - Disable – Prevents messages being sent from the diagnostic port.

COMSPHERE 392xPlus Modems 4-30 November 1996 3920-A2-GN31-30 Table 4-6 (3 of 3) Miscellaneous Configuration Options — Multiport Mode l Diag Connection: Modem(DC)Nxt Modem(DC) NMS(CC) Disable This configuration option does not appear when the LeaseLine Rate is configured for TMp and NetworkPosition i...

Page 148 - Singleport Mode

DCP Configuration 4-31 3920-A2-GN31-30 November 1996 Singleport Mode A In Singleport mode, the modem’s configuration options are arranged into nine groups based onfunctionality: • DTE Interface (Table 4-7) • DTE Dialer (Table 4-8) • Line Dialer (Table 4-9) • Dial Line (Table 4-10) • Leased Line (Tab...

Page 150 - DTE Interface — Singleport Mode; DTE Interface Configuration Options — Singleport Mode

DCP Configuration 4-33 3920-A2-GN31-30 November 1996 DTE Interface — Singleport Mode A The DTE Interface configuration options contain EIA-232-D (CCITT V.24) and asynchronouscharacter format information essential for maintaining a connection and for transmitting databetween the DTE and the modem. Ta...

Page 151 - – Sets data length to 8 data bits.; None – No parity bit is used.

COMSPHERE 392xPlus Modems 4-34 November 1996 3920-A2-GN31-30 Table 4-7 (2 of 8) DTE Interface Configuration Options — Singleport Mode A Asyn #Data Bits: 8Nxt 8 7 9(DirectMde) 6(DirectMde) This configuration option only appears when Async/Sync Mode is configured for Async. Asynchronous Number of Data...

Page 156 - Disable – Disregards CT111 Rate Control.

DCP Configuration 4-39 3920-A2-GN31-30 November 1996 Table 4-7 (7 of 8) DTE Interface Configuration Options — Singleport Mode A Bakup_TXClk_Src: InternalNxt Internal External RXC_Loop This configuration option only appears in customized installations in which the Dual_Leased_Ln is configuredfor Enab...

Page 158 - DTE Dialer — Singleport Mode; DTE Dialer Configuration Options — Singleport Mode

DCP Configuration 4-41 3920-A2-GN31-30 November 1996 DTE Dialer — Singleport Mode A The DTE Dialer configuration options establish the DTE-to-modem protocol for call establishmentand control. Table 4-8 shows each DTE Dialer configuration option as it appears on the LCD, with the SyncLeased factory d...

Page 159 - Disable – A break character is sent to the remote end.

COMSPHERE 392xPlus Modems 4-42 November 1996 3920-A2-GN31-30 Table 4-8 (2 of 5) DTE Dialer Configuration Options — Singleport Mode A AT Escape Char: 043 ASCINxt 043 ASCI This configuration option only appears when DTE Dialer Type is configured for AT. AT Escape Character. The escape sequence (+++) a...

Page 160 - Enable – Modem sends result codes to the DTE.

DCP Configuration 4-43 3920-A2-GN31-30 November 1996 Table 4-8 (3 of 5) DTE Dialer Configuration Options — Singleport Mode A Linefeed Char: 010 ASCINxt 010 ASCI This configuration option only appears when DTE Dialer Type is configured for AT. Line Feed Character. Sets the character used to perform a...

Page 163 - Line Dialer — Singleport Mode; Line Dialer Configuration Options — Singleport Mode; NOTE: Pulse Mode is disabled in Denmark and Sweden.

COMSPHERE 392xPlus Modems 4-46 November 1996 3920-A2-GN31-30 Line Dialer — Singleport Mode A The Line Dialer configuration options establish parameters used by the modem to answer ororiginate calls. Table 4-9 shows each Line Dialer configuration option as it appears on the LCD, with the SyncLeased f...

Page 164 - This configuration option does not appear on Models 3920

DCP Configuration 4-47 3920-A2-GN31-30 November 1996 Table 4-9 (2 of 4) Line Dialer Configuration Options — Singleport Mode A BusyTone Detect: EnableNxt Enable Disable Busy Tone Detect. Sets the modem to monitor for Busy Tone (Enable) or ignore Busy Tone (Disable). NOTE: This configuration option is...

Page 166 - This option is only valid on Model 3921

DCP Configuration 4-49 3920-A2-GN31-30 November 1996 Table 4-9 (4 of 4) Line Dialer Configuration Options — Singleport Mode A Auto Make Busy: DisableNxt Disable Enable This option is only valid on Model 3921 Plus. Automatic Make Busy. Forces the modem to go off-hook under the following conditions: i...

Page 167 - Dial Line — Singleport Mode; Dial Line Configuration Options — Singleport Mode

COMSPHERE 392xPlus Modems 4-50 November 1996 3920-A2-GN31-30 Dial Line — Singleport Mode A The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 4-10 shows each Dial Line configuration option as it appears on the LCD, with the SyncLeased factory def...

Page 169 - Disable – No guard tone.

COMSPHERE 392xPlus Modems 4-52 November 1996 3920-A2-GN31-30 Table 4-10 (3 of 3) Dial Line Configuration Options — Singleport Mode A V22b Guard Tone: DisableNxt Disable 550Hz 1800Hz This configuration option only appears when Dial Line Rate is configured for V.22bis or V.22 data rate, or whenAutomod...

Page 170 - Leased Line — Singleport Mode; Leased Line Configuration Options— Singleport Mode

DCP Configuration 4-53 3920-A2-GN31-30 November 1996 Leased Line — Singleport Mode A The Leased Line configuration options only appear when the Sync Leased factory preset templateis selected. They are used to configure the modem for operation over leased lines. Table 4-11 shows each Leased Line conf...

Page 177 - not configured for Disable.

COMSPHERE 392xPlus Modems 4-60 November 1996 3920-A2-GN31-30 Table 4-12 (3 of 6) V.42/MNP/Buffer Configuration Options — Singleport Mode A EC Fallbck Char: 013 ASCINxt 013 ASCI This configuration option only appears when Async/Sync Mode is configured for Async, and EC NegotiateBuffer is not configur...

Page 178 - not configured for DirectMode.

DCP Configuration 4-61 3920-A2-GN31-30 November 1996 Table 4-12 (4 of 6) V.42/MNP/Buffer Configuration Options — Singleport Mode A XON/XOFF Psthru: DisableNxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async, and Flow Control ofModem is configured fo...

Page 181 - Test — Singleport Mode; Test Configuration Options — Singleport Mode

COMSPHERE 392xPlus Modems 4-64 November 1996 3920-A2-GN31-30 Test — Singleport Mode A The Test configuration options determine specifics, such as the duration of a test, for the variousdiagnostic tests available to the modem. Table 4-13 shows each Test configuration option as it appears on the LCD, ...

Page 183 - Misc — Singleport Mode; Miscellaneous Configuration Options — Singleport Mode

COMSPHERE 392xPlus Modems 4-66 November 1996 3920-A2-GN31-30 Misc — Singleport Mode A The Miscellaneous configuration options determine specifics for various functions, includingnetwork management parameters and remote modem access. Table 4-14 shows each Misc (Miscellaneous) configuration option as ...

Page 185 - Security — Singleport Mode

COMSPHERE 392xPlus Modems 4-68 November 1996 3920-A2-GN31-30 Table 4-14 (3 of 3) Miscellaneous Configuration Options — Singleport Mode A NetworkPosition: TributaryEnd Tributary Control Network Position Identification. Each modem must be identified either as a control modem or a tributary modem. NOTE...

Page 186 - AT Command Set and S-Registers; Switching Between Data Mode and Online Command Mode

5-1 3920-A2-GN31-30 November 1996 AT Command Set and S-Registers Overview 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch...

Page 187 - Escape Sequence and Escape Guard Time; ATO; Command Guidelines; Review the following guidelines before using any AT Commands.

COMSPHERE 392xPlus Modems 5-2 November 1996 3920-A2-GN31-30 Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is online and in Data mode. The 392xPlus modems use three consecutive plus ( + ) characters as the escape sequence. (To changethis value, refer to S-Reg...

Page 188 - Table 5-1 lists all valid result codes for the 392xPlus modems.; Result Codes

AT Command Set and S-Registers 5-3 3920-A2-GN31-30 November 1996 Result Codes Table 5-1 lists all valid result codes for the 392xPlus modems. Table 5-1 (1 of 2) Result Codes Numbers (1) Numbers (2) Word Description 0 0 OK Command executed 1 1 CONNECT Modem connected to line 2 2 RING Modem receiving ...

Page 190 - AT Command List; AT Command Format; ATXn

AT Command Set and S-Registers 5-5 3920-A2-GN31-30 November 1996 AT Command List AT commands are issued from an asynchronous DTE, such as a PC, and control the modem’soperation and software configuration. AT commands are only applicable when the DTE DialerType configuration option is set for AT. (Re...

Page 194 - NOTE: Only the Standard RS232 setting is allowed in Austria.

AT Command Set and S-Registers 5-9 3920-A2-GN31-30 November 1996 Table 5-2 (4 of 9) 392x Plus AT Commands AT Command DCP LCD Command Sequence Description &C n LSD Control. &C0 Forced On. LSD ON at all times. &C1 Standard RS232. LSD is ON when the remote modem’s carriersignal is detected....

Page 195 - NOTE: The V.22bis Guard Tone cannot be disabled in some countries.

COMSPHERE 392xPlus Modems 5-10 November 1996 3920-A2-GN31-30 Table 5-2 (5 of 9) 392x Plus AT Commands AT Command DCP LCD Command Sequence Description &G n V.22bis Guard Tone. &G0 Disable. &G1 550 Hz. &G2 1800 Hz. Configure\Edit\Dial Line NOTE: The V.22bis Guard Tone cannot be disable...

Page 196 - NOTE: The only way to gain control of the modem is via the DCP.

AT Command Set and S-Registers 5-11 3920-A2-GN31-30 November 1996 Table 5-2 (6 of 9) 392x Plus AT Commands AT Command DCP LCD Command Sequence Description &M n and &Q n Async/Sync Mode and DTE Dialer Type. &M0, &Q0 Modem operates in Asynchronous mode using AT Commandprotocol. &M1...

Page 199 - NOTE: The factory default value is country dependent.

COMSPHERE 392xPlus Modems 5-14 November 1996 3920-A2-GN31-30 Table 5-2 (9 of 9) 392x Plus AT Commands AT Command DCP LCD Command Sequence Description \N n Error Control Mode. \N0 Buffer Mode. \N1 Direct Mode. \N2 MNP or Disconnect. \N3 MNP or Buffer. \N4 V.42/MNP or Disconnect. \N5 V.42/MNP or Buffe...

Page 200 - n is the register number.

AT Command Set and S-Registers 5-15 3920-A2-GN31-30 November 1996 S-Register List S-Registers affect the operating parameters of the 392xPlus modems. S-Registers are onlyapplicable when the DTE Dialer Type configuration option is set for AT. (Refer to the &Mn and&Qn commands.) Table 5-3 list...

Page 201 - Description

COMSPHERE 392xPlus Modems 5-16 November 1996 3920-A2-GN31-30 Table 5-3 (1 of 12) 392x Plus S-Registers S-Register Description DCP LCD Command Sequence S0 Auto-Answer Ring Number 1 . Register determines number of rings the modem will count before automatically answering a call. Enter zero (0) if you ...

Page 202 - DCP LCD

AT Command Set and S-Registers 5-17 3920-A2-GN31-30 November 1996 Table 5-3 (2 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S12 Escape Guard Time. Register sets the value (in 20-millisecond increments) forthe required pause before and after the escape sequence is issu...

Page 213 - Dial Access Security

6-1 3920-A2-GN31-30 November 1996 Dial Access Security Chapter 6, Dial Access Security, is not available for viewing online because it containssecurity-sensitive information. Dial Access Security information is available in the COMSPHERE392xPlus Modems Models 3920Plus and 3921Plus Installation and O...

Page 214 - Menu Tree; Pages A-2 and A-3 provide a menu tree for the 392xPlus modems.

A-1 3920-A2-GN31-30 November 1996 Menu Tree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Pages A-2 and A-3 provide a menu tree for the 392xPlus modems. A

Page 217 - Troubleshooting; Modem Health

B-1 3920-A2-GN31-30 November 1996 Troubleshooting Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview This appendix points out basic problems that can occur when operating a 392xPlus modem. UseTables B-1 through B-6 to check o...

Page 219 - Modem — DTE Connection

Troubleshooting B-3 3920-A2-GN31-30 November 1996 Table B-4 Modem — DTE Connection Symptom Action The modem does not accept or echoback AT commands. Verify that the cable between the Async port of the DTE and the modem is astandard RS-232 cable. (Null modem cables, also known as crossover cables,do ...

Page 220 - Modem — VF Connection

COMSPHERE 392xPlus Modems B-4 November 1996 3920-A2-GN31-30 Table B-5 (1 of 2) Modem — VF Connection Symptom Action The modem does not receive a dialtone. Attach a telephone directly to the telephone line to verify that a dial tone exists. Make sure the VF line is connected to the modem’s rear jack ...

Page 222 - Pin Assignments

C-1 3920-A2-GN31-30 November 1996 Pin Assignments Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignments C-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments ...

Page 224 - VF Connector Pin Assignments

Pin Assignments C-3 3920-A2-GN31-30 November 1996 VF Connector Pin Assignments Table C-2 lists the connector pin assignments for Model 3920Plus modular jacks as well as thepin assignments for the TELCO jacks. (See Figure C-1.) Table C-2 VF Connector Pin Assignments Type of Telco Jack Pin Leased Dial...

Page 225 - Auxiliary Cables Not Supplied; Figure C-2. Wiring Diagram — “Y” Cable for External Telephone

COMSPHERE 392xPlus Modems C-4 November 1996 3920-A2-GN31-30 Auxiliary Cables Not Supplied To add an external telephone to your modem, use an external “Y” cable to connect the phoneline to both the modem and the telephone (Figure C-2). Figure C-2. Wiring Diagram — “Y” Cable for External Telephone

Page 226 - -wire operations with TEK leads

Pin Assignments C-5 3920-A2-GN31-30 November 1996 For 2-wire leased-line connections to a JM8 network interface, use an 8-position to 6-positioncrossover cable (Figure C-3) according to the following FCC requirements: “The RJ series of jacks should not be used for connecting data equipment to nonswi...

Page 228 - Plus modem must be configured for V.25bis dialing.

D-1 3920-A2-GN31-30 November 1996 CCITT V.25bis Dialing Command and Responses Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 229 - Call Request Commands; n is the telephone number to be dialed.; Call Request with Stored Memory Address Provided (CRS); x is directory location 1–24.; Call Response; xx is

COMSPHERE 392xPlus Modems D-2 November 1996 3920-A2-GN31-30 Call Request Commands Call Request commands are issued from the DTE to the modem and are responsible for initiatingdial calls. Call Request commands include Call Request with Number Provided (CRN) and CallRequest with Stored Memory Address ...

Page 230 - The CNX response format is CNX.; Delayed Call Indicator; The DLC response format is:; Call Answer Commands; The DIC command format is DIC.

CCITT V.25bis Dialing D-3 3920-A2-GN31-30 November 1996 ET is similar to the Call Failure Messages Busy Signal and Trunk Busy and the result codeBUSY. NS is similar to the Common Operational Message Invalid Number and the result code ERROR. CB is similar to the Call Failure Messages Dial Line in Use...

Page 231 - The CIC command format is CIC.

COMSPHERE 392xPlus Modems D-4 November 1996 3920-A2-GN31-30 Connect Incoming Call (CIC) The CIC command forces the modem to cancel any DIC commands and answer an incomingcall. This command is only valid when the DTE issues a DIC command. CIC must be issuedwithin 10 seconds after sending a DIC. CIC i...

Page 233 - Command Response; The INV response format is:

COMSPHERE 392xPlus Modems D-6 November 1996 3920-A2-GN31-30 Command Response A Command Response indicates that the command entered was a valid or invalid entry.Command Response includes Valid (VAL) and Invalid (INV). Valid (VAL) The VAL response indicates that the modem has accepted the V.25bis comm...

Page 234 - S-Register Equivalent; List Request; V.25bis Response Messages

CCITT V.25bis Dialing D-7 3920-A2-GN31-30 November 1996 Table D-1 (2 of 2) V.25bis Commands V.25bis Command AT Command/ S-Register Equivalent Description List Request RLD Request to List Delayed Numbers NONE RLF Request to List Forbidden Numbers NONE RLN Request to List Stored Numbers NONE List Resp...

Page 235 - ASCII Character Table; Table E-1 in this appendix provides the ASCII character table.

E-1 3920-A2-GN31-30 November 1996 ASCII Character Table Overview E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Table E-1 in this appendix provides the ASCII character table. Table E-1 (1 of 4) ASCII Characters Hexadecimal ASCII V...

Page 239 - Default Configuration Options

F-1 3920-A2-GN31-30 November 1996 Default Configuration Options Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Table F-1 lists the six sets of default (preset) configuration options, labeled Sync Leased, AsyncLeased, TMp ...

Page 240 - Factory Default Configuration Options

COMSPHERE 392xPlus Modems F-2 November 1996 3920-A2-GN31-30 Table F-1 (1 of 10) Factory Default Configuration Options Configuration Option Sync Leased Default Settings Async Leased Default Settings TMp Default Settings Async Dial Default Settings UNIX Dial Default Settings Sync Dial Default Settings...

Page 243 - DTE Dialer

Default Configuration Options F-5 3920-A2-GN31-30 November 1996 Table F-1 (4 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Sett...

Page 245 - Dial Line; Lease Line

Default Configuration Options F-7 3920-A2-GN31-30 November 1996 Table F-1 (6 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Sett...

Page 248 - Misc

COMSPHERE 392xPlus Modems F-10 November 1996 3920-A2-GN31-30 Table F-1 (9 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Setting...

Page 250 - Sample Configurations

G-1 3920-A2-GN31-30 November 1996 Sample Configurations Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point-to-Point G-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configurat...

Page 251 - Configuration Options; Refer to Sample Port Rate Table in this section.; Refer to Sample Port Rate Table in this section.

COMSPHERE 392xPlus Modems G-2 November 1996 3920-A2-GN31-30 Point-to-Point Figure G-1 shows a sample configuration for point-to-point applications. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 9600 9600 4800 48...

Page 252 - Sample Port Rate Table; Cables; Cable 1

Sample Configurations G-3 3920-A2-GN31-30 November 1996 Sample Port Rate Table Port Rate Port 1 Port 2 Port 3 Port 4 ÁÁÁ Á ÁÁ 28.8K ÁÁÁÁ Á ÁÁ Á 9600 ÁÁÁÁ Á ÁÁ Á 9600 ÁÁÁ Á Á Á 4800 ÁÁÁÁ Á ÁÁ Á 4800 ÁÁÁ Á ÁÁ ÁÁÁ 24.0K ÁÁÁÁ Á ÁÁ Á ÁÁÁÁ 9600 ÁÁÁÁ Á ÁÁ Á ÁÁÁÁ Disable ÁÁÁ Á Á Á ÁÁÁ 4800 ÁÁÁÁ Á ÁÁ Á ÁÁÁÁ ...

Page 253 - TX Clock Source; Port TXC Source; Set Port 4 to External.

COMSPHERE 392xPlus Modems G-4 November 1996 3920-A2-GN31-30 Extended Point-to-Point Figure G-2 shows a sample configuration for extended point-to-point applications. DTE (Sync) Cable 1 Cable 2 Cable 2 Leased 4800(V32b) 4800(V32b) TX TX Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable...

Page 255 - Extended Multipoint; Figure G-3. Sample Configuration — Extended Multipoint

COMSPHERE 392xPlus Modems G-6 November 1996 3920-A2-GN31-30 Extended Multipoint Figure G-3 shows a sample configuration for extended multipoint applications. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 3 9600 96...

Page 257 - Point-to-Point with Automatic Dial Backup

COMSPHERE 392xPlus Modems G-8 November 1996 3920-A2-GN31-30 Cables Cable 1 Use a standard, customer-supplied, EIA-232-D/V.24 cable with a DB-25-P (plug)connector at one end to attach to the modem. Attach this to the connector labeledDTE1, 2, 3, or 4. Cable 2 Use part number 125-0053-1431 (an 8-posit...

Page 259 - Diag Connection; Refer to the Sample Port Rate Table in this section.

COMSPHERE 392xPlus Modems G-10 November 1996 3920-A2-GN31-30 Point-to-Point with Network Management Figure G-5 shows a sample configuration for point-to-point applications with networkmanagement. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 C...

Page 261 - Carrier with Network Management; Figure G-6. Sample Configuration — Carrier with Network Management

COMSPHERE 392xPlus Modems G-12 November 1996 3920-A2-GN31-30 Carrier with Network Management Figure G-6 shows a sample configuration for COMSPHERE 3000 Series Carrier applications withnetwork management. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 480...

Page 263 - Figure G-7 shows a sample configuration for extended diagnostics.; Extended Diagnostics; Set Port 1 to External.

COMSPHERE 392xPlus Modems G-14 November 1996 3920-A2-GN31-30 Extended Diagnostics Figure G-7 shows a sample configuration for extended diagnostics. Figure G-7. Sample Configuration  Extended Diagnostics Configuration Options 3920Plus A Use Sync Leased (Answer) default configuration options with the...

Page 264 - Set Port 1 to Enable.

Sample Configurations G-15 3920-A2-GN31-30 November 1996 3920Plus C Use Sync Leased (Answer) default configuration options with the followingexceptions: Tx Clock Source Set to External. Extended Channel Set Port 1 to Enable. Upstream Port # Set to Port 1. Diag Connection Set to Modem(DC). NetworkPos...

Page 265 - Digital Bridging; Figure G-8 shows a sample for Digital Bridging.

COMSPHERE 392xPlus Modems G-16 November 1996 3920-A2-GN31-30 Digital Bridging Figure G-8 shows a sample for Digital Bridging. Figure G-8. Sample Configuration  Digital Bridge 3920Plus A Use TMp Control Template default configuration options with the followingexception: MUX Mode Set to DTE Bridge. 3...

Page 269 - Multipoint MSD; Figure G-10 shows a sample configuration for multipoint MSD.; Figure G-10. Sample Configuration — Multipoint MSD

COMSPHERE 392xPlus Modems G-20 November 1996 3920-A2-GN31-30 Multipoint MSD Figure G-10 shows a sample configuration for multipoint MSD. Figure G-10. Sample Configuration — Multipoint MSD 3920Plus A Use TMp Control Template default configuration options with the followingexception: NetworkPosition S...

Page 271 - Equipment List; Equipment

H-1 3920-A2-GN31-30 November 1996 Equipment List Equipment Feature/ Part Number Model 3920 Plus 3920-A1-XXX Model 3921 Plus 3921-B1-XXX 6-position, 4-wire modular cord, 7-foot length 125-0067-0031 8-position, 8-wire modular cord, 14-foot length 125-0053-1431 Universal Power Supply 327-0074-XXXX 3600...

Page 272 - Glossary; See local analog loop.

Glossary-1 3920-A2-GN31-30 November 1996 Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem.Any time a power cycle occurs or a reset is performed or a save is issued using the DCP,this area is updated with the contents of Active (Saved). A...

Page 273 - Binary Synchronous Communications. An IBM

COMSPHERE 392xPlus Modems Glossary-2 November 1996 3920-A2-GN31-30 automatic dial standby When operating in Dial Backup mode, this function forces the modem to periodicallycheck the quality of the leased line. If the leased line is found to be at normal operatingcondition, the modem disconnects from...

Page 274 - An outlet on equipment and cables that provides a connection.; data bank

Glossary Glossary-3 3920-A2-GN31-30 November 1996 circuit pack lock A screw lock tab installed over a circuit card’s latch release tab to prevent the unit frombeing removed without a tool. It is used on SDUs, modems, and filler panels. command mode One of two modem operating modes. When in Command m...

Page 275 - The process of recovering data from a modulated carrier wave.

COMSPHERE 392xPlus Modems Glossary-4 November 1996 3920-A2-GN31-30 dBm A decibel referenced to one milliwatt. This unit measures relative signal power. DCE The equipment (Data Communications Equipment or Data Circuit TerminatingEquipment) that provides the functions required to establish, maintain, ...

Page 276 - An algorithm used to correct data transmission errors.

Glossary Glossary-5 3920-A2-GN31-30 November 1996 EIA Electronic Industries Association. This organization provides standards for the datacommunications industry. EIA-232-D An Electronic Industries Association’s standard defining the 25-position interfacebetween data terminal equipment and data comm...

Page 277 - The modem’s transmit VF signal is looped to its receiver.

COMSPHERE 392xPlus Modems Glossary-6 November 1996 3920-A2-GN31-30 idle A state in which the modem’s operating parameters can be modified or commands can beissued to the modem using either AT commands or the DCP. JM8 A jack used for leased-line networks. Pins 1 and 2 are the transmit pair and Pins 7...

Page 280 - A device connected “closer” to the host computer.

Glossary Glossary-9 3920-A2-GN31-30 November 1996 TDM Time Division Multiplexer. A device that enables the simultaneous transmission ofmultiple independent data streams into a single high-speed data stream bysimultaneously sampling the independent data streams and combining these samples toform the ...

Page 281 - A character that tells the DTE or modem to stop transmitting data.; XON

COMSPHERE 392xPlus Modems Glossary-10 November 1996 3920-A2-GN31-30 VF Voice Frequency. The part of the audio frequency range used to transmit voice sound(usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal. XOFF A character that tells the DTE or modem to stop transmi...

Page 282 - Index

Index-1 3920-A2-GN31-30 November 1996 Index A Abort (test), 3-55ac power requirements, 1-13Active (Operating) configurations, 4-1Active (Saved) configurations, 4-1address, network management, 3-31, 4-29, 4-68analog loopback test, 3-57–3-58answer access security, 6-2–6-4answering a call auto-answer, ...