Paradyne 3910 - Manuals - manualsarea.com

Page 2 - Trademarks; COPYRIGHT

COMSPHERE 3900 Series Modems A November 1996 3910-A2-GN32-30 COMSPHERE3900 Series ModemsModels 3910 and 3911Point-to-Point/Multipoint Installation and Operation Manual3910-A2-GN32-30 4th Edition (November 1996) Changes and enhancements to the product and to the information herein will be documented ...

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

Safety Instructions B 3910-A2-GN32-30 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 3900 Series Modems C November 1996 3910-A2-GN32-30 Notices

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

i 3910-A2-GN32-30 November 1996 Table of Contents Preface Objectives and Reader Assumptions vii . . . . . . . . . . . . . . . . . . . . . . . . . How to Use this Manual vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . ...

Page 6 - DCP Operation

COMSPHERE 3900 Series Modems ii November 1996 3910-A2-GN32-30 3. DCP Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Indicators 3-...

Page 7 - Appendices

Table of Contents iii 3910-A2-GN32-30 November 1996 Appendices A. Menu Tree A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B. Troubleshooting B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C. Pin Assignments C-1 . . . . . . . . . ...

Page 8 - List of Figures; Figure

COMSPHERE 3900 Series Modems iv November 1996 3910-A2-GN32-30 List of Figures Figure Page 1-1 Model 3910 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Model 3911 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 9 - List of Tables; Table

Table of Contents v 3910-A2-GN32-30 November 1996 List of Tables Table Page 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Model 3910 and Model 3911 DCP LEDs 3-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 SDCP LEDs 3-6 . . . . . . . . . . . . . . . . . . . . . ....

Page 10 - V.25bis Response Messages

COMSPHERE 3900 Series Modems vi November 1996 3910-A2-GN32-30 Table Page D-2 V.25bis Response Messages D-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1 ASCII Characters E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 11 - Objectives and Reader Assumptions

vii 3910-A2-GN32-30 November 1996 Preface Objectives and Reader Assumptions This manual describes how to install and operate the COMSPHERE r 391x Series standalone and carrier-mounted modems. This manual assumes that you have a basic understanding of modemsand their operation. How to Use this Manual...

Page 12 - Related Documents; COMSPHERE 3000 Series Carrier, Installation Manual

COMSPHERE 3900 Series Modems viii November 1996 3910-A2-GN32-30 Related Documents 3000-A2-GA31 COMSPHERE 3000 Series Carrier, Installation Manual 3610-A2-GZ45 3600 Hubbing Device Feature Number 3600-F3-300, InstallationInstructions 3910-A2-GK41 COMSPHERE 3900 Series Modems, Models 3910 and 3911,Inst...

Page 13 - Overview; The 391x Series modems have a wide variety of features.

1-1 3910-A2-GN32-30 November 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipoint Appl...

Page 14 - Mixed inbound rates for multipoint applications.; Multipoint Applications

COMSPHERE 3900 Series Modems 1-2 November 1996 3910-A2-GN32-30 • Mixed inbound rates for multipoint applications. • Convenient migration to new or optional features through software downloading. • Extended data circuits with diagnostics. • Network management system (NMS) support through the COMSPHER...

Page 17 - 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 1-5 3910-A2-GN32-30 November 1996 manner similar to the DCP on the Model 3910. For a better understanding of DCP operation, referto Chapter 3, DCP Operation. The COMSPHERE 3000 Series Carrier has a total of 17 slots. The first slot, Slot 0, is reserved forthe shared diagnostic unit (SDU...

Page 18 - The user is not authorized to repair or modify the equipment.

COMSPHERE 3900 Series Modems 1-6 November 1996 3910-A2-GN32-30 7. 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, conta...

Page 19 - Canada; CAUTION

Introduction 1-7 3910-A2-GN32-30 November 1996 Canada NOTICE TO THE USERS OF THE CANADIAN PUBLIC SWITCHED TELEPHONE NETWORK The Canadian Department of Communications label identifies certified equipment. Thiscertification means that the equipment meets certain telecommunications network protective,o...

Page 20 - Technical Specifications; Class A

COMSPHERE 3900 Series Modems 1-8 November 1996 3910-A2-GN32-30 Technical Specifications Table 1-1 shows the technical specifications for the 391x Series modems. Table 1-1 (1 of 3) Technical Specifications for 391x Series Modems Specifications Description APPROVALS FCC Part 15 Class A FCC Part 68 Reg...

Page 22 - Leased Line

COMSPHERE 3900 Series Modems 1-10 November 1996 3910-A2-GN32-30 Table 1-1 (3 of 3) Technical Specifications for 391x Series Modems Specifications Description DATA RATES Leased Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400 1200 bps Dial Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 240...

Page 23 - Modem Installation; For the standalone model

2-1 3910-A2-GN32-30 November 1996 Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391x Series Modem Package 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipmen...

Page 24 - For the carrier-mounted model; Customer-Supplied Equipment; Model 3910 Modem Installation

COMSPHERE 3900 Series Modems 2-2 November 1996 3910-A2-GN32-30 For the carrier-mounted model • Installation instructions • Model 3911 modem • Rear connector plate with two DB-25-S edge card connectors If any hardware components are damaged, notify your service representative. Return equipmentusing t...

Page 25 - Connecting Cables to the Model 3910 Modems; Figure 2-1. Model 3910 Rear Panel and Power Supply

Modem Installation 2-3 3910-A2-GN32-30 November 1996 The rear panel of the Model 3910 modem (Figure 2-1) has the following switches and connectors: • An ON/OFF power switch. • An 8-pin DIN type power receptacle (PWR) for the dc power supply. • An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire l...

Page 26 - DTE Connection; Make sure the modem’s rear panel power switch is OFF.; Dial Network Connection

COMSPHERE 3900 Series Modems 2-4 November 1996 3910-A2-GN32-30 DTE Connection Use the following procedures to connect the EIA-232-D cable from the modem to the DTE: 1. Make sure the modem’s rear panel power switch is OFF. 2. Connect the DB-25-P (plug) connector on the cable to the DB-25-S (socket) c...

Page 27 - Network Management System Connection; Make sure the modem’s power switch is in the OFF position.

Modem Installation 2-5 3910-A2-GN32-30 November 1996 Network Management System Connection For the Model 3910, use the following procedures to connect the modem to the networkmanagement system interface: 1. Insert the sub-miniature, 4-conductor modular plug of the 3600 Hubbing Device into the jack la...

Page 28 - Selecting Factory Configuration Options; The LCD now displays Ld EditArea frm.; factory preset configurations.; The LCD now displays Sav EditArea to.

COMSPHERE 3900 Series Modems 2-6 November 1996 3910-A2-GN32-30 Selecting Factory Configuration Options After the modem passes the power-up self-test, configure it for operation using one of the sixfactory preset configurations. The 391x Series modems have six factory preset templates that contain th...

Page 29 - key to; Using AT Commands; When using AT commands, the following criteria must be met:; The screen displays OK.; Using

Modem Installation 2-7 3910-A2-GN32-30 November 1996 6. Press the key until the appropriate configuration area appears on the LCD, then press the corresponding function key to select your choice. (Saving configuration options to theActive (Saved) configuration area automatically saves them to the Ac...

Page 30 - appropriate storage area. Enter the following:; Where: n is one of the following storage areas:; NOTE; The selected factory configuration is saved.

COMSPHERE 3900 Series Modems 2-8 November 1996 3910-A2-GN32-30 To change a factory template using AT commands, perform the following steps. For moreinformation on changing factory templates using AT commands, refer to Chapter 5, AT CommandSet and S-Registers. 1. Use the AT&F&W command to loa...

Page 31 - Removing and Replacing Model 3910 Modems; cable from the connector on the rear of the modem.; Model 3911 Modem Installation; slot position as that intended for the modem.

Modem Installation 2-9 3910-A2-GN32-30 November 1996 Removing and Replacing Model 3910 Modems To remove and replace a Model 3910 modem, perform the following steps: 1. Make sure the modem is offline, and press the modem’s rear panel power switch to the OFF position. 2. Disconnect the power cord from...

Page 32 - Figure 2-2. Installing a Model 3911 Modem; key on the SDCP. The cursor appears in the carrier selection entry.

COMSPHERE 3900 Series Modems 2-10 November 1996 3910-A2-GN32-30 Figure 2-2. Installing a Model 3911 Modem 2. At the front of the carrier, hold the modem vertically, with the latch on its faceplate in the open position, and insert it into the top and bottom card guides of one of the slotsnumbered 1–1...

Page 33 - key to place the SDCP in direct communication with the selected

Modem Installation 2-11 3910-A2-GN32-30 November 1996 5. Press the Select key to place the SDCP in direct communication with the selected modem. The LCD displays the Top-Level menu for the selected modem. In addition, the FrontPanel LED on the modem’s faceplate and the OK LED on the SDCP light. 6. O...

Page 34 - Removing and Replacing Model 3911 Modems; Rotate the circuit pack lock until the release tab is exposed.

COMSPHERE 3900 Series Modems 2-12 November 1996 3910-A2-GN32-30 Removing and Replacing Model 3911 Modems CAUTION If the Model 3911 is removed from the carrier, always use aground strap when handling the modem. Always store theModel 3911 in an antistatic bag when it is removed from thecarrier. It is ...

Page 36 - Check modem status

COMSPHERE 3900 Series Modems 3-2 November 1996 3910-A2-GN32-30 Call Setup Branch 3-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dial 3-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disc...

Page 37 - Model 3910 Diagnostic Control Panel

DCP Operation 3-3 3910-A2-GN32-30 November 1996 Model 3910 Diagnostic Control Panel The diagnostic control panel (DCP) of the Model 3910 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 COMSPHERE...

Page 38 - Status Indicators

COMSPHERE 3900 Series Modems 3-4 November 1996 3910-A2-GN32-30 Status Indicators The 391x Series modems’ status indicators continuously provide information on the modem’soperating condition. All of the status indicators on the Model 3910 appear on the DCP(Figure 3-1), whereas the status indicators f...

Page 40 - The SDCP LEDs are listed and described in Table 3-2.; Diagnostic Control Panel Operation; LCD Display; or

COMSPHERE 3900 Series Modems 3-6 November 1996 3910-A2-GN32-30 The SDCP LEDs are listed and described in Table 3-2. Table 3-2 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 mo...

Page 41 - Hidden Choice Indicators; Right Scroll Indicator >; Other Indicators; Remote Mode Indicator; Keypad

DCP Operation 3-7 3910-A2-GN32-30 November 1996 Hidden Choice Indicators The hidden choice indicators serve as an alert that other choices are available besides what iscurrently displaying on the LCD. These indicators appear as one of the following symbols: Right Scroll Indicator > The right scro...

Page 42 - Menu Structure

COMSPHERE 3900 Series Modems 3-8 November 1996 3910-A2-GN32-30 These keys also allow you to move the cursor one character to the left or right on data entrydisplays; for example, to allow entry of one digit at a time. F1 F2 F3 Keys Function keys select the LCD choice that appears above the function ...

Page 43 - Top-Level Menu Status and Operational Messages; Top-Level Menu Status

DCP Operation 3-9 3910-A2-GN32-30 November 1996 All menu tree branches are discussed later in Chapter 3 except for Configure, which is discussed inChapter 4, and Security, which is discussed in Chapter 6. Functions that appear on the LCD varydepending upon the type of model installed, its operating ...

Page 47 - Messages listed in Table 3-5 are dial access security messages.; Dial Access Security Messages

DCP Operation 3-13 3910-A2-GN32-30 November 1996 Messages listed in Table 3-5 are dial access security messages. Table 3-5 Dial Access Security Messages Dial Access Security Message Indicates Get VF PsWd The answering modem is waiting for the originating caller to transmit a VFpassword. Get DTE PsWd...

Page 48 - Quick Configuration Display; Configure; CC

COMSPHERE 3900 Series Modems 3-14 November 1996 3910-A2-GN32-30 Quick Configuration Display The Quick Configuration display indicates the basic operational characteristics of the modem. F1 Leased:19.2Status Configure F2 F3 To access the Quick Configuration display from the Top-Level display, press t...

Page 49 - Status Branch

DCP Operation 3-15 3910-A2-GN32-30 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 50 - DeviceHS VF; present, the word Normal appears on the LCD.

COMSPHERE 3900 Series Modems 3-16 November 1996 3910-A2-GN32-30 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 Statu...

Page 52 - To exit DeviceHS and remain in the Status Branch, press the

COMSPHERE 3900 Series Modems 3-18 November 1996 3910-A2-GN32-30 Table 3-6 (2 of 2) Health and Status Messages Type Indicates Message Dial Make Busy Mode The modem is in a Make Busy condition. Service Line (Model 3911 only) The modem installed in a COMSPHERE 3000 SeriesCarrier has been switched to a ...

Page 53 - VF; VF displays the condition of the leased or dial connection.

DCP Operation 3-19 3910-A2-GN32-30 November 1996 VF VF displays the condition of the leased or dial connection. To access VF from the Status branch, make the following selection: F1 Status: > DeviceHS VF F2 F3 Select VF. F1 Status:VF > SigQual=Excelent F2 F3 If the modem is receiving a signal,...

Page 54 - NonLnearDist; Identity; FRev

COMSPHERE 3900 Series Modems 3-20 November 1996 3910-A2-GN32-30 NonLnearDist Non-Linear Distortion displays distortion which is usually associated withpulse-code modulation (PCM) compandor noise on the phone line. Thisvalue appears for Trellis Multipoint modulation. Retrains Retrains displays the nu...

Page 55 - DTE; Press the; Backup

DCP Operation 3-21 3910-A2-GN32-30 November 1996 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 selections: F1 Stat...

Page 57 - determination of the line conditions since the last; Options

DCP Operation 3-23 3910-A2-GN32-30 November 1996 Table 3-7 Backup Status Screens Active Line 1st Screen Display Inactive Line 2nd Screen Display Possible Inactive/Backup Line Condition Line=Pri 4w APLorLine=Pri 2w APL Bckup:2wAPL=XXXXorBckup : Dial =(blank) Good indicates that line continuity is det...

Page 58 - Record

COMSPHERE 3900 Series Modems 3-24 November 1996 3910-A2-GN32-30 F1 Options:Status > V.29 V.33 F2 F3 If optional features are installed in the modem, they appear on the LCD’s bottom line. If otherfeatures are installed, press the key to scroll other features into view. To exit this function and re...

Page 59 - key to view the remaining fields.; The message Modem O.K. appears if no sequence faults have occurred.; To exit this function and remain in the Status branch, press the; Configure Branch

DCP Operation 3-25 3910-A2-GN32-30 November 1996 The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and areidentified by a number in the upper right corner.) Press the key to view the remaining fields. The message Modem O.K. appears if no sequence faults have o...

Page 60 - Control; Display; Display allows you to view the modem’s poll list.; yyyyyy

COMSPHERE 3900 Series Modems 3-26 November 1996 3910-A2-GN32-30 To access PList from the Top-Level menu, make the following selections: F1 Leased:19.2PList 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 ...

Page 61 - Clear; The Clear function does not appear in Remote mode.; The Change function does not appear in Remote.; Change

DCP Operation 3-27 3910-A2-GN32-30 November 1996 If there are modems in the poll list when you select Display, xxx Displays the network management address of the modem in the poll list. yyyyyy Displays either Active or Skip to indicate the poll list in which the networkmanagement address is included...

Page 62 - Active; Add

COMSPHERE 3900 Series Modems 3-28 November 1996 3910-A2-GN32-30 F1 Poll List:Chang > Active Delete F2 F3 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 fiel...

Page 63 - To exit this function and remain in the PList branch, press the; Acquire; The Acquire function does not appear in Remote mode.

DCP Operation 3-29 3910-A2-GN32-30 November 1996 F1 Poll List:AddCommand Complete F2 F3 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...

Page 64 - Select Abort or allow the function to complete.; Control Branch; Test

COMSPHERE 3900 Series Modems 3-30 November 1996 3910-A2-GN32-30 The number field (yyy) indicates the total number of devices that responded to the modem’s polls.These devices have been acquired for the poll list. Select Abort or allow the function to complete. F1 Poll List:AcquirNum Acquired yyy F2 ...

Page 65 - Speaker; Off; Reset

DCP Operation 3-31 3910-A2-GN32-30 November 1996 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 access Speaker f...

Page 66 - Data Stream; The Data Stream function is not available in Async mode.

COMSPHERE 3900 Series Modems 3-32 November 1996 3910-A2-GN32-30 To access Reset from the Control branch, make the following selection: F1 Control: > Speaker Reset F2 F3 Select Reset. The message Reset appears momentarily before the modem performs the power-up diagnostic testsequence. Data Stream ...

Page 67 - EIA LEDs

DCP Operation 3-33 3910-A2-GN32-30 November 1996 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 Use the EIA LEDs function to change the port that controls the front panel LEDs. This functionallows the front pan...

Page 68 - Make Busy/Remove Make Busy; WARNING; RemoveMakeBusy appears.

COMSPHERE 3900 Series Modems 3-34 November 1996 3910-A2-GN32-30 Make Busy/Remove Make Busy The Make Busy function forces the modem off-hook so it cannot answer a call. This is often usedwith PBX systems to permit the busy out of a PBX port for rotary or hunt groups. WARNING To prevent violations of ...

Page 69 - Service Line/Disconnect Service Line; Download Software

DCP Operation 3-35 3910-A2-GN32-30 November 1996 Service Line/Disconnect Service Line The Service Line function allows you to switch a specific Model 3911 installed in a COMSPHERE3000 Series Carrier from normal leased or dial operation to service-line operation. This switchonly places the modem on t...

Page 70 - Selecting Clone Remote; Clone Remote in Point-to-Point Configurations

COMSPHERE 3900 Series Modems 3-36 November 1996 3910-A2-GN32-30 Selecting Clone Remote NOTE Clone Remote operations are not supported unless both local andremote modems are 391x Series modems. (The 3800 or 392xSeries modems cannot be used in cloning operations with 391xSeries modems.) To access DwnL...

Page 71 - Clone Remote in Broadcast Configurations; Cloning DC Broadcast Remote

DCP Operation 3-37 3910-A2-GN32-30 November 1996 Clone Remote in Broadcast Configurations A tributary modem configured for extended diagnostics (Diagnostic Connection configurationoption set to Modem(DC)) can perform two types of Remote Clone operations. It can clone theupstream, VF connected, contr...

Page 72 - Viewing DC Broadcast Clone Results; Clone Remote in Multipoint Configurations; tributary modem cannot download

COMSPHERE 3900 Series Modems 3-38 November 1996 3910-A2-GN32-30 Viewing DC Broadcast Clone Results F1 Choose DLL Type >DC_CloneResults F2 F3 From the Choose DLL Type screen, press the key until DC_CloneResults appears to view the results of the last DC_Broadcast clone operation. If the message Tr...

Page 73 - Cloning a Single TMp Remote

DCP Operation 3-39 3910-A2-GN32-30 November 1996 • For Multiple download configurations, ensure that the control modem’s active poll listcontains all the network management addresses for the remote tributary modems that willreceive the download (refer to the Poll List section in this chapter), and e...

Page 74 - Cloning a Multiple TMp Remote; Implementing a Clone Remote Operation

COMSPHERE 3900 Series Modems 3-40 November 1996 3910-A2-GN32-30 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, Implementing a Clone Remote Operation. Viewing Multi...

Page 75 - key to display the Reprogram_Remote selection.; 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 3-41 3910-A2-GN32-30 November 1996 F1 Warning:DownloadAbort_Download F2 F3 At this point, if you do not want to continue this process, abort the transfer by selecting anyfunction key. This returns the modem to the DwnLoadSoftware menu. However, to continue withthe transfer, press the k...

Page 76 - VF Thresholds Update

COMSPHERE 3900 Series Modems 3-42 November 1996 3910-A2-GN32-30 F1 RemClone StatusBank1:xxxx/yyyy F2 F3 As data banks are transferred, the local and remote LCD’s bottom line displays the status of thedownload process, and the number of records sent versus the total number of records for that bank. F...

Page 77 - If you want to modify additional VF thresholds, select Nxt.

DCP Operation 3-43 3910-A2-GN32-30 November 1996 F1 RSL High (- dBm)Nxt 09 F2 F3 In the example shown above, 09 is the upper (High) RSL threshold (in -dBm). To change the 09 to10, make the following selections: F1 RSL High (- dBm)Nxt 19 F2 F3 r Select the F2 ( ) key to increment the number above the...

Page 79 - Valid Ranges for VF Thresholds

DCP Operation 3-45 3910-A2-GN32-30 November 1996 Table 3-8 Valid Ranges for VF Thresholds VF Thresholds Valid Ranges Default Values Receive Signal Level High 0 dBm to –15 dBm Above –9 dBm Receive Signal Level Low –16 dBm to –50 dBm Below –23 dBm Signal to Noise Ratio 5 dB to 40 dB Below 23 dB Non-Li...

Page 80 - Test Branch; Abort

COMSPHERE 3900 Series Modems 3-46 November 1996 3910-A2-GN32-30 Test Branch The Test branch of the Top-Level menu allows you to initiate various modem tests. Use these testsif you are having data communication problems, such as periodic character loss, random errors, orconstant format errors. By the...

Page 81 - To access Abort from the Test branch, make the following selection:; Self; To access Self from the Test branch, make the following selection:

DCP Operation 3-47 3910-A2-GN32-30 November 1996 To access Abort from the Test branch, make the following selection: F1 Test: > Abort Self F2 F3 Select Abort. F1 Test:AbortCommand Complete F2 F3 The modem stops all tests currently in progress and displays the Command Complete statusmessage on the...

Page 82 - To exit this function and remain in the Test branch, press the; Loc Analog Loop

COMSPHERE 3900 Series Modems 3-48 November 1996 3910-A2-GN32-30 NOTE For tributary modems only, the test is delayed 30 seconds to allowany outstanding network management messages to propagateupstream before the VF channel is interrupted by the test. If the modem passes the self-test, Pass appears on...

Page 83 - Rem Digital Loop

DCP Operation 3-49 3910-A2-GN32-30 November 1996 F1 Test:Local LoopStarted F2 F3 NOTE For tributary modems only, the test is delayed 30 seconds to allowany outstanding network management messages to propagateupstream before the VF channel is interrupted by the test. The message Started appears on th...

Page 84 - Loc Digital Loop

COMSPHERE 3900 Series Modems 3-50 November 1996 3910-A2-GN32-30 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 Test:Remote LoopStarted F2 F3 The...

Page 85 - Pattern; Figure 3-7. Pattern Test and Local Analog Loopback Test

DCP Operation 3-51 3910-A2-GN32-30 November 1996 To access Loc Digital Loop from the Test branch, make the following selections: F1 Test:Loc_Digital_Loop F2 F3 Press the key until Loc_Digital_Loop appears. Press any function key to start this test. F1 Test:Digitl LoopStarted F2 F3 The message Starte...

Page 86 - Figure 3-8. Pattern Test and Digital Loopback Test

COMSPHERE 3900 Series Modems 3-52 November 1996 3910-A2-GN32-30 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 Patter...

Page 87 - key to display BlksRcvd=xxxxxxx, number of blocks of data received.; Sub-Network Health and Status Branch; SubHS

DCP Operation 3-53 3910-A2-GN32-30 November 1996 BlksErrd=xxxxxxx displays the number of blocks of data found in error (block size is 1000 bitsper block). BlksRcvd=xxxxxxx displays the total number of blocks of data received. The messageNoSync appears as a value for BlksErrd while the modem’s receiv...

Page 88 - Call Setup Branch; The Call Setup function is not available in TMp Control mode.

COMSPHERE 3900 Series Modems 3-54 November 1996 3910-A2-GN32-30 F1 Sub-network HSNxt xxx yyyyyy F2 F3 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 ...

Page 89 - Dial; Dial Disconnect

DCP Operation 3-55 3910-A2-GN32-30 November 1996 Call_Setup “Status” Status Configure PList Control Test SubHS Tlk/Data Security Remote Dial Disconnect Answer Dial_Standby or Return_to_Dial Change_Directory (Dial Backup only) Directory Locations 1 - 24 Directory_Status (Does not appearin North Ameri...

Page 90 - To view other directory locations, select Nxt.; Disconnect

COMSPHERE 3900 Series Modems 3-56 November 1996 3910-A2-GN32-30 F1 DialDirectory:Nxt 01:5551234 F2 F3 To view other directory locations, select Nxt. F1 DialDirectory:Nxt 02:5461879 F2 F3 Once the directory location you want appears on the LCD, press the F2 or F3 key to dial thenumber. F1 DialDirecto...

Page 91 - Answer

DCP Operation 3-57 3910-A2-GN32-30 November 1996 For dial backup applications, the modem goes on-hook (hangs up) and the call is disconnected.The Command Complete status message appears. To exit this function and remain in the Call Setup branch, press the key. To exit and return to the Top-Level men...

Page 93 - Change Directory

DCP Operation 3-59 3910-A2-GN32-30 November 1996 F1 Dial StandbyCommand Complete F2 F3 If the modem is operating in a Dial Backup mode, the Dial Standby function forces the modem toprimary leased lines and the LCD displays the status message Command Complete. Once the modem is in Dial Standby mode, ...

Page 94 - Nxt

COMSPHERE 3900 Series Modems 3-60 November 1996 3910-A2-GN32-30 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 a...

Page 95 - Valid Dial Command Modifiers; — Pulse dial. Only the digits 0–9 can be dialed in Pulse Dial mode.; Directory Status (Does Not Appear in North America); Directory Status displays the status of each directory location.

DCP Operation 3-61 3910-A2-GN32-30 November 1996 Table 3-9 Valid Dial Command Modifiers Dial command modifiers are parameters entered in the dial command string which specify how, when, andwhat number to dial. The following is a list of parameters the 391x Series modems recognize: T — Tone (DTMF) di...

Page 97 - Line Dialer section in Chapter 4) must be set to

DCP Operation 3-63 3910-A2-GN32-30 November 1996 The following sections describe three 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 section in Cha...

Page 98 - Line Dialer section in Chapter 4) must be set to Disable; Security Branch

COMSPHERE 3900 Series Modems 3-64 November 1996 3910-A2-GN32-30 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 . This configuration option...

Page 99 - Remote Branch

DCP Operation 3-65 3910-A2-GN32-30 November 1996 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 changes made to co...

Page 100 - Security; xxx

COMSPHERE 3900 Series Modems 3-66 November 1996 3910-A2-GN32-30 NOTE When initiating a Remote function from a TMp tributary modem,primary channel operation is not available. Also, if the tributarymodem is not on the control modem’s poll list, the error messageNo Trib Session appears when the functio...

Page 101 - yyyyyyyy

DCP Operation 3-67 3910-A2-GN32-30 November 1996 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 Password:Ent yyy...

Page 102 - The Talk/Data and Security branches do not appear.

COMSPHERE 3900 Series Modems 3-68 November 1996 3910-A2-GN32-30 Status “Status” Configure PList Control Test SubHS Call_Setup ExitRem The Top-Level menu of the remote 391x Series modem is similar to the local 391x Series modemwith the following exceptions: • The Talk/Data and Security branches do no...

Page 103 - Diagnostic Control Panel Access

DCP Operation 3-69 3910-A2-GN32-30 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 391x Series modem and p...

Page 104 - DCP Configuration

4-1 3910-A2-GN32-30 November 1996 DCP Configuration Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure Branch 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Editing and Saving...

Page 106 - Figure 4-2. AT Command Configuration Process

DCP Configuration 4-3 3910-A2-GN32-30 November 1996 Active (Saved) (ATZ0, ATZ3) Customer1 (ATZ1) Customer2 (ATZ2) Factory USE AT&W COMMAND TO SAVECHANGES TO Active (Saved),Customer1, OR Customer2 LOAD Active (Operating) USING ATZ OR AT&F COMMAND S SyncLeasedAnswer(AT&F2) S AsyncLeasedAns...

Page 108 - The Configure branch consists of the following three levels:; Editing and Saving a Configuration Option

DCP Configuration 4-5 3910-A2-GN32-30 November 1996 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 changes (E...

Page 109 - Originate

COMSPHERE 3900 Series Modems 4-6 November 1996 3910-A2-GN32-30 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 F...

Page 110 - StrapsWhenDisc

DCP Configuration 4-7 3910-A2-GN32-30 November 1996 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 10000000 F2 ...

Page 111 - Save; Summary

COMSPHERE 3900 Series Modems 4-8 November 1996 3910-A2-GN32-30 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(Save...

Page 112 - Configuration Tables; DTE Interface

DCP Configuration 4-9 3910-A2-GN32-30 November 1996 Configuration Tables The modem’s configuration options are arranged into nine groups based on functionality: DTEInterface (Table 4-1), DTE Dialer (Table 4-2), Line Dialer (Table 4-3), Dial Line (Table 4-4),Leased Line (Table 4-5), V.42/MNP/Buffer (...

Page 113 - DTE Interface Configuration Options; Mode configuration option (see the

COMSPHERE 3900 Series Modems 4-10 November 1996 3910-A2-GN32-30 Table 4-1 (1 of 10) DTE Interface Configuration Options Async/Sync Mode: SyncNxt Sync Async Asynchronous/Synchronous Mode. Determines whether the modem operates in Asynchronous mode orSynchronous mode. If the AT command set is enabled a...

Page 115 - Ignore

COMSPHERE 3900 Series Modems 4-12 November 1996 3910-A2-GN32-30 Table 4-1 (3 of 10) DTE Interface Configuration Options DTR Action: IgnoreNxt Ignore Stndrd_RS232 CntrlsOnHook CntrlsTxMute Data Terminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE isconnected and re...

Page 119 - Forced On

COMSPHERE 3900 Series Modems 4-16 November 1996 3910-A2-GN32-30 Table 4-1 (7 of 10) DTE Interface Configuration Options LSD Control: Stndrd_RS232Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Sim_Cntl_Car =DTR/DiscOFF Line Signal Detect Control. LSD is a signal indicating that the carrier signa...

Page 122 - Enable; DTE Dialer

DCP Configuration 4-19 3910-A2-GN32-30 November 1996 Table 4-1 (10 of 10) DTE Interface Configuration Options Extend Main Ch.: DisableNxt Disable Enable Primary data can only be extended one link. Extend Main Channel. This configuration option supports extended diagnostics. Specifies whether there i...

Page 123 - DTE Dialer Configuration Options; Disable

COMSPHERE 3900 Series Modems 4-20 November 1996 3910-A2-GN32-30 Table 4-2 (1 of 5) DTE Dialer Configuration Options DTE Dialer Type: DisableNxt Disable AT V25bis_Async V25bis_Bsync V25bis_HDLC DTR=Direct1 AT&T_Exclusv Data Terminal Equipment Dialer Type. Identifies to the modem the type of diali...

Page 126 - AT Commands and

DCP Configuration 4-23 3910-A2-GN32-30 November 1996 Table 4-2 (4 of 5) DTE Dialer Configuration Options ExtendResltCode: EnableNxt Enable Disable Add/EC Add/V42,MNP Use_DTE_Rate This configuration option only appears if DTE Dialer Type is configured for AT. Extended Result Codes. Informational mess...

Page 128 - Line Dialer; Line Dialer Configuration Options; NOTE: Pulse Mode is disabled in Denmark and in Sweden.

DCP Configuration 4-25 3910-A2-GN32-30 November 1996 Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer ororiginate calls. Table 4-3 shows each Line Dialer configuration option as it appears on the LCD, with the SyncLeased factory default setting (the ...

Page 129 - display from 0 to 255 seconds.

COMSPHERE 3900 Series Modems 4-26 November 1996 3910-A2-GN32-30 Table 4-3 (2 of 5) Line Dialer Configuration Options Blind Dial Pause: 2secNxt 2sec 4sec 6sec 8sec 10sec 20sec This configuration option only appears when Dial Tone Detect is configured for Disable. Blind Dial Pause. Determines how long...

Page 132 - n, where n is 0 for Disable and 1 for Enable.

DCP Configuration 4-29 3910-A2-GN32-30 November 1996 Table 4-3 (5 of 5) Line Dialer Configuration Options MakeBusyVia DTR: DisableEnd Disable Enable Make Busy Via DTR. Determines if the modem goes off-hook when DTR is OFF. Enable this setting if theDTE normally keeps DTR ON and turns DTR OFF when th...

Page 133 - Dial Line; Dial Line Configuration Options; Modem operates using the modulation and data rate selected.

COMSPHERE 3900 Series Modems 4-30 November 1996 3910-A2-GN32-30 Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 4-4 shows each Dial Line configuration option as it appears on the LCD, with the SyncLeased factory default setting (the ...

Page 134 - Start at 48 and Start at 96

DCP Configuration 4-31 3910-A2-GN32-30 November 1996 Table 4-4 (2 of 3) Dial Line Configuration Options V32bis Automode: EnableNxt Enable Disable System 85 This configuration option only appears when Dial Line Rate is configured for V.32 terbo, V.32bis, orV.32 data rate. V.32bis Automode. The modem ...

Page 135 - NOTE: The V.22bis Guard Tone cannot be disabled in some countries.; Long

COMSPHERE 3900 Series Modems 4-32 November 1996 3910-A2-GN32-30 Table 4-4 (3 of 3) Dial Line Configuration Options V22b Guard Tone: DisableNxt Disable 550Hz 1800Hz This configuration option only appears when Dial Line Rate is configured for V.22bis or V.22 datarate, or when V.32bis Automode is confi...

Page 136 - Leased Line Configuration Options; mode and the other set to Answer mode.

DCP Configuration 4-33 3910-A2-GN32-30 November 1996 Leased Line 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 4-5 shows each Leased Line configuration option as i...

Page 138 - n, where n is 0 for Enable and 1 for Disable.

DCP Configuration 4-35 3910-A2-GN32-30 November 1996 Table 4-5 (3 of 6) Leased Line Configuration Options V32bis Autorate: EnableNxt Enable Disable This configuration option only appears when Leased Line Rate is configured for V.32 terbo orV.32bis data rate. V.32bis Autorate. Once connected, the mod...

Page 141 - option can be enabled.

COMSPHERE 3900 Series Modems 4-38 November 1996 3910-A2-GN32-30 Table 4-5 (6 of 6) Leased Line Configuration Options Dual_Leased_Ln: DisableNxt Disable Enable This configuration option is only available when the Dual Leased Line device option is installed. Dual Leased Line. Allows the 2-wire backup ...

Page 144 - not configured for Disable.

DCP Configuration 4-41 3910-A2-GN32-30 November 1996 Table 4-6 (3 of 8) V.42/MNP/Buffer Configuration Options EC Negotiat Bfr: DisableNxt Disable Enable Disab&Switch This configuration option is only available if Async/Sync Mode is configured for Async, and ErrorControl Mode is configured for V4...

Page 145 - not configured for DirectMode.

COMSPHERE 3900 Series Modems 4-42 November 1996 3910-A2-GN32-30 Table 4-6 (4 of 8) V.42/MNP/Buffer Configuration Options Flw Cntl of DTE: CTS_to_DTENxt CTS_to_DTE Disable XON/XOFF This configuration option is only available if Async/Sync Mode is configured for Async, and ErrorControl Mode is not con...

Page 147 - Saves the data in the buffer in both the local and remote modems.; Dialer configuration options group) is enabled.

COMSPHERE 3900 Series Modems 4-44 November 1996 3910-A2-GN32-30 Table 4-6 (6 of 8) V.42/MNP/Buffer Configuration Options Break Buffr Ctl: Keep_DataNxt Keep_Data Discard_Data This configuration option is only available if Async/Sync Mode is configured for Async, and ErrorControl Mode is not configure...

Page 148 - not configured for BufferMode or DirectMode.

DCP Configuration 4-45 3910-A2-GN32-30 November 1996 Table 4-6 (7 of 8) V.42/MNP/Buffer Configuration Options BuffrDiscDelay: 10secNxt 10sec Disable 60sec This configuration option is only available if Async/Sync Mode is configured for Async, and ErrorControl Mode is not configured for DirectMode. B...

Page 149 - Test Configuration Options

COMSPHERE 3900 Series Modems 4-46 November 1996 3910-A2-GN32-30 Table 4-6 (8 of 8) V.42/MNP/Buffer Configuration Options RdcdAsyncBufSiz: DisableEnd Disable Enable This configuration option is only available if Async/Sync Mode is configured for Async, and ErrorControl Mode is configured for BufferMo...

Page 151 - Misc; Miscellaneous Configuration Options; No Change

COMSPHERE 3900 Series Modems 4-48 November 1996 3910-A2-GN32-30 Misc The Miscellaneous configuration options determine specifics for various functions, includingnetwork management parameters and remote modem access. Table 4-8 shows each Misc (Miscellaneous) configuration option as it appears on the ...

Page 155 - AT Command Set and S-Registers; Switching Between Data Mode and Online Command Mode

5-1 3910-A2-GN32-30 November 1996 AT Command Set and S-Registers Overview 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch...

Page 156 - Escape Sequence and Escape Guard Time; ATO; Command Guidelines; Review the following guidelines before using any AT Commands.

COMSPHERE 3900 Series Modems 5-2 November 1996 3910-A2-GN32-30 Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is online and in Data mode. The 391x Seriesmodem uses three consecutive plus ( + ) characters as the escape sequence. (To change this value,refer to ...

Page 157 - Table 5-1 lists all valid result codes for the 391x Series modem.; Result Codes

AT Command Set and S-Registers 5-3 3910-A2-GN32-30 November 1996 Result Codes Table 5-1 lists all valid result codes for the 391x Series modem. 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 receivin...

Page 158 - AT Command List; AT Command Format; ATXn

COMSPHERE 3900 Series Modems 5-4 November 1996 3910-A2-GN32-30 Table 5-1 (2 of 2) Result Codes Numbers (1) Description Word Numbers (2) 26 15 CONNECT 7200/ EC*** Connection at 7200 bps with error control 27 5 CONNECT 1200/ EC* Connection at 1200 bps with error control 28 28 CONNECT 38400** Connectio...

Page 163 - Reset and Load Active.

AT Command Set and S-Registers 5-9 3910-A2-GN32-30 November 1996 Table 5-3 (3 of 8) 391x Series AT Commands AT Command DCP LCD Command Sequence Description Z n Reset and Load Active. Z0 Loads configuration options from Active (Saved) to Active(Operating). Z1 Loads configuration options from Customer...

Page 167 - Follows DTR. The state of CTS follows the state of DTR.; Flow Control of DTE, Flow Control of Modem.

AT Command Set and S-Registers 5-13 3910-A2-GN32-30 November 1996 Table 5-3 (7 of 8) 391x Series AT Commands AT Command DCP LCD Command Sequence Description \D n CTS Control. \D0 Forced On. Forces CTS to always ON. \D1 Standard RS232. \D2 Wink When Disconnect. CTS is turned OFF for 1 to 2 secondsupo...

Page 169 - n is the register number.; 91x Series S-Registers; Auto-Answer Ring Number

AT Command Set and S-Registers 5-15 3910-A2-GN32-30 November 1996 S-Register Format S-Registers can be displayed and/or modified when the modem is in Command mode. To displaythe value of an S-Register, issue the following command: TYPE: ATSn? Where: n is the register number. PRESS: Enter To modify t...

Page 171 - Register has the following values:

AT Command Set and S-Registers 5-17 3910-A2-GN32-30 November 1996 Table 5-4 (3 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S40 Auto Make Busy. Register determines if the modem goes off-hookunder certain conditions. This register should only be enabled whenthe modem...

Page 182 - Dial Access Security

6-1 3910-A2-GN32-30 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 COMSPHERE3900 Series Modems Models 3910 and 3911 Point-To-Point/Multipoi...

Page 183 - Menu Tree; Pages A-2 and A-3 provide a menu tree for the 391x Series modems.

A-1 3910-A2-GN32-30 November 1996 Menu Tree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Pages A-2 and A-3 provide a menu tree for the 391x Series modems. A

Page 186 - Troubleshooting; Modem Health; Contact your service representative.

B-1 3910-A2-GN32-30 November 1996 Troubleshooting Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview This appendix points out basic problems that can occur when operating a 391x Series modem.Use Tables B-1 through B-6 to chec...

Page 187 - Verify that both modems are using the same modulation scheme.

COMSPHERE 3900 Series Modems B-2 November 1996 3910-A2-GN32-30 Table B-2 Leased-Line Operation Symptom Action The modems do not train-up onleased lines. Verify that the correct cabling is used for your application. Refer toChapter 2, Modem Installation. Verify that one modem is configured for Answer...

Page 188 - Modem — DTE Connection; DTE Dialer in Chapter 4.

Troubleshooting B-3 3910-A2-GN32-30 November 1996 Table B-4 Modem — DTE Connection Symptom Action The modem does not accept orecho back AT commands. Verify that the cable between the Async port of the DTE and themodem is a standard RS-232 cable. (Null modem cables, also knownas crossover cables, do ...

Page 189 - Modem — VF Connection; Line Dialer in Chapter 4.

COMSPHERE 3900 Series Modems B-4 November 1996 3910-A2-GN32-30 Table B-5 (1 of 2) Modem — VF Connection Symptom Action The modem does not receive adial tone. Attach a telephone directly to the telephone line to verify that a dialtone exists. Make sure the VF line is connected to the modem’s rear jac...

Page 191 - Pin Assignments

C-1 3910-A2-GN32-30 November 1996 Pin Assignments Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignments C-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments ...

Page 193 - VF Connector Pin Assignments

Pin Assignments C-3 3910-A2-GN32-30 November 1996 VF Connector Pin Assignments Table C-2 lists the connector pin assignments for Model 3910 modular jacks as well as the pinassignments for the TELCO jacks. (See Figure C-1.) Table C-2 VF Connector Pin Assignments Type of Telco Jack Pin Leased Dial RJ1...

Page 194 - Auxiliary Cables Not Supplied; Figure C-2. Wiring Diagram — “Y” Cable for External Telephone

COMSPHERE 3900 Series Modems C-4 November 1996 3910-A2-GN32-30 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 195 - -wire operations with TEK leads

Pin Assignments C-5 3910-A2-GN32-30 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 197 - DCP

D-1 3910-A2-GN32-30 November 1996 CCITT V.25bis Dialing Commands and Responses Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 198 - 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 3900 Series Modems D-2 November 1996 3910-A2-GN32-30 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 Addre...

Page 199 - 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 Commands and Responses D-3 3910-A2-GN32-30 November 1996 ET is similar to the Call Failure Messages Busy Signal and Trunk Busy and the result code BUSY. NS is similar to the Common Operational Message Invalid Number and the result code ERROR. CB is similar to the Call Failure M...

Page 200 - The CIC command format is CIC.

COMSPHERE 3900 Series Modems D-4 November 1996 3910-A2-GN32-30 Connect Incoming Call (CIC) The CIC command forces the modem to cancel any DIC commands and answer an incoming call.This command is only valid when the DTE issues a DIC command. CIC must be issued within 10seconds after sending a DIC. CI...

Page 201 - x is a directory location.

CCITT V.25bis Dialing Commands and Responses D-5 3910-A2-GN32-30 November 1996 Request List of Stored Numbers (RLN) The Request List of Stored Numbers (RLN) command displays telephone numbers stored in themodem’s directory location. If the RLN command is entered without specifying a directorylocatio...

Page 202 - Command Response; The INV response format is:

COMSPHERE 3900 Series Modems D-6 November 1996 3910-A2-GN32-30 Command Response A Command Response indicates that the command entered was a valid or invalid entry. CommandResponse includes Valid (VAL) and Invalid (INV). Valid (VAL) The VAL response indicates that the modem has accepted the V.25bis c...

Page 205 - ASCII Character Table; Table E-1 in this appendix provides the ASCII character table.

E-1 3910-A2-GN32-30 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 208 - delete

COMSPHERE 3900 Series Modems E-4 November 1996 3910-A2-GN32-30 Table E-1 (4 of 4) ASCII Characters Hexadecimal ASCII Value Key Control Character Decimal ASCII Value 5F 095 - 60 096 ( 61 097 a 62 098 b 63 099 c 64 100 d 65 101 e 66 102 f 67 103 g 68 104 h 69 105 i 6A 106 j 6B 107 k 6C 108 l 6D 109 m ...

Page 209 - Default Configuration Options

F-1 3910-A2-GN32-30 November 1996 Default Configuration Options Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Table F-1 in this appendix lists all default configuration options for the factory presetconfigurations. An N/...

Page 210 - Factory Default Configuration Options

COMSPHERE 3900 Series Modems F-2 November 1996 3910-A2-GN32-30 Table F-1 (1 of 7) 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 Settin...

Page 217 - Sample Configuration

G-1 3910-A2-GN32-30 November 1996 Sample Configuration Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point-to-Point G-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configurati...

Page 218 - Configuration Options; Cable 1

COMSPHERE 3900 Series Modems G-2 November 1996 3910-A2-GN32-30 Point-to-Point Figure G-1 shows a sample configuration for point-to-point applications. 3910 A Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX DTE (Sync) DTE (Sync) 3910 B Figure G-1. Sample Configuration — Point-to-...

Page 219 - Multipoint; Figure G-2. Sample Configuration — Multipoint

Sample Configuration G-3 3910-A2-GN32-30 November 1996 Multipoint Figure G-2 shows a sample configuration for multipoint applications. TMp control modems can accept mixed inbound rates from tributary modems. For example, oneinbound link may be configured for 14.4 kbps while another link experiencing...

Page 220 - Point-to-Point with Automatic Dial Backup; Auto Dial Back; Cables

COMSPHERE 3900 Series Modems G-4 November 1996 3910-A2-GN32-30 Point-to-Point with Automatic Dial Backup Figure G-3 shows a sample configuration for point-to-point applications with automatic dialbackup. Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX Cable 3 Cable 3 Dial DTE (S...

Page 222 - Carrier with Network Management; Figure G-5. Sample Configuration — Carrier with Network Management

COMSPHERE 3900 Series Modems G-6 November 1996 3910-A2-GN32-30 Carrier with Network Management Figure G-5 shows a sample configuration for COMSPHERE 3000 Series Carrier applications withnetwork management. NMS (6700 or 6800) Adapter (002-0025-0031) CC IN SDU Circuit Card COMSPHERE3000 Series Carrier...

Page 223 - Extended Multipoint; Figure G-6. Sample Configuration — Extended Multipoint

Sample Configuration G-7 3910-A2-GN32-30 November 1996 Extended Multipoint Figure G-6 shows a sample configuration for extended multipoint applications. Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX Cable 1 Cable 1 Cable 1 4800 4800 4800 4800 Cable 1 Cable 1 Cable 1 Cable 5 4800 4800 ...

Page 224 - Set port 4 to External.

COMSPHERE 3900 Series Modems G-8 November 1996 3910-A2-GN32-30 Configuration Options 3920 A Use Sync Leased (Answer) default configuration options with the followingexception: Rate at 19.2K Set ports 1, 2, 3, and 4 to 4800. 3920 B Use Sync Leased (Originate) default configuration options with the fo...

Page 225 - Figure G-7 shows a sample configuration for extended diagnostics.; Extended Diagnostics; Network position

Sample Configuration G-9 3910-A2-GN32-30 November 1996 Extended Diagnostics Figure G-7 shows a sample configuration for extended diagnostics. Figure G-7. Sample Configuration  Extended Diagnostics Configuration Options 3910 A Use Sync Leased (Answer) default configuration options with the following...

Page 227 - Equipment List; Equipment; Universal Power Supply

H-1 3910-A2-GN32-30 November 1996 Equipment List Equipment Feature/ Part Number Model 3910 3910-A1-XXX Model 3911 3911-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 Hubbing D...

Page 228 - Glossary; See local analog loop.

GL-1 3910-A2-GN32-30 November 1996 Glossary Active (Operating) A configuration area containing configuration options currently inuse by the modem. Anytime a power cycle occurs or a reset isperformed or a save is issued using the DCP, this area is updatedwith the contents of Active (Saved). Active (S...

Page 229 - Binary Synchronous Communications. An IBM

COMSPHERE 3900 Series Modems GL-2 November 1996 3910-A2-GN32-30 automatic dial backup When leased-line operation fails, this function forces the modem todial the telephone number stored in directory location 1. automatic dial standby When operating in Dial Backup mode, this function forces themodem ...

Page 230 - CCITT standard for error control protocol.

Glossary GL-3 3910-A2-GN32-30 November 1996 CCITT An advisory committee (Consultative Committee on InternationalTelephone and Telegraph) established by the United Nations torecommend communications standards and policies. CCITT V.22 A standard for modems operating full-duplex over dial networks at12...

Page 231 - The diagnostic interface between an NMS and a network device.

COMSPHERE 3900 Series Modems GL-4 November 1996 3910-A2-GN32-30 constant carrier mode The modem transmits a carrier signal constantly, regardless ofRTS. Control Channel (CC) The diagnostic interface between an NMS and a network device. control modem A control modem polls downstream tributary modems ...

Page 232 - A discrete signal. Compare with analog signal.

Glossary GL-5 3910-A2-GN32-30 November 1996 dial command modifiers A modifier used in the dial string that instructs the modem how toprocess a dialed telephone number. dial line A communications circuit that is established by a switched circuitconnection in the dial network. dial network See PSTN. D...

Page 233 - Retraining at a lower rate or speed.

COMSPHERE 3900 Series Modems GL-6 November 1996 3910-A2-GN32-30 extended network The extension of a circuit where the tributary DCE is connected toa downstream (extended) control DCE. extended result codes An asynchronous message (in either numbers or words) thatincludes VF data rate and error contr...

Page 234 - The modem’s transmit VF signal is looped to its receiver.

Glossary GL-7 3910-A2-GN32-30 November 1996 leased line A private telephone line connection exclusively for the user. Nodialing is necessary. LED Light Emitting Diode. A light or status indicator on the DCP thatglows in response to the presence of a certain condition (e.g., analarm). Link The physic...

Page 235 - A telephone or modem is being used.

COMSPHERE 3900 Series Modems GL-8 November 1996 3910-A2-GN32-30 NMS Network Management System. A set of diagnostic andconfiguration management tools for a data communicationnetwork, consisting of software programs and dedicated computerhardware. off-hook A telephone or modem is being used. on-hook A...

Page 237 - Universal Service Ordering Codes.

COMSPHERE 3900 Series Modems GL-10 November 1996 3910-A2-GN32-30 Time DivisionMultiplexer (TDM) A device that enables the simultaneous transmission of multipleindependent data streams into a single high-speed data stream bysimultaneously sampling the independent data streams andcombining these sampl...

Page 238 - Index; backup

Index-1 3910-A2-GN32-30 November 1996 Index A Abort (test), 3-46–3-47ac power requirements, 1-9Active (Operating) configurations, 4-1Active (Saved) configurations, 4-1address, network management, 3-26, 4-50analog loopback test, 3-48–3-49answer access security, 6-2–6-4answering a call auto-answer, 3-...

Page 239 - configuration options

COMSPHERE 3900 Series Modems Index-2 November 1996 3910-A2-GN32-30 C cables, 2-4, 2-5, H-1Call Setup branch, 3-8, 3-54–3-62Canadian government requirements, 1-7Clone Remote, 3-36–3-42compatibility, 1-8COMSPHERE 3000 Series Carrier Model 3911 installation and removal, 2-9–2-12network interface module...

Page 240 - government requirements

Index Index-3 3910-A2-GN32-30 November 1996 Dial Line configuration options group, 4-30–4-32digital loopback, 3-49–3-51dimensions, 1-9directory, telephone number, 3-59–3-62disconnecting a call, 3-56–3-57Download Software, 3-35–3-42DTE connection, 2-4, B-3status, 3-4–3-6, 3-21 DTE Dialer configuratio...

Page 241 - installation

COMSPHERE 3900 Series Modems Index-4 November 1996 3910-A2-GN32-30 H handshaking sequence, 3-63, 3-64hang up, 3-56–3-57hardware part number (HPt #), 3-20HDLC, 4-20, D-1Health and Status definitions, 3-23–3-24 I Identity, 3-20indicators definitions, 3-7status (LEDs), 3-4–3-6 installation Model 3910, ...

Page 242 - messages

Index Index-5 3910-A2-GN32-30 November 1996 M Make Busy, 3-34manual dial. See Talk/Datamenu structure, 3-8 quick configuration display, 3-14 tree, A-1–A-3 messages LCD, 3-9–3-14, 3-23–3-24result codes, 5-3–5-4 Misc configuration options group, 4-48–4-51mixed inbound rates, 1-2, 4-34, G-3model number...

Page 243 - rates

COMSPHERE 3900 Series Modems Index-6 November 1996 3910-A2-GN32-30 R rates automatic control, 4-35dial line, 1-10, 4-30, 5-17leased line, 1-10, 4-34, 5-18 rear connector plate, 1-4rear panel connectors, 1-4–1-5, 2-3, C-2Record, Status branch, 3-24–3-25Remote access password, 3-65, 3-67, 3-68, 4-5–4-...