Digicom 3910, 3911 Extended Multipoint

Sample Configurations

G-73910-A2-GN32-40 September 1998

Extended Multipoint

Figure G-6 shows a sample configuration for extended multipoint applications.

Cable 1

Cable 2Cable 2

Leased

19200(V32t) 19200(V32t)

TX TX

Cable 1

4800

Cable 1

Cable 5

4800

DTE

(Sync)

DTE

(Sync)

DTE

(Sync)

DTE

(Sync) 3920 A3920 B1

Cable 1Cable 2Cable 2

Leased

4800(TMp) 4800(TMp)

TX TX

Cable 1Cable 2

4800(TMp)

DTE

(Sync)

DTE

(Sync)

3910 A3910 B

3910 C

Figure G-6. Sample Configuration — Extended Multipoint

Contents

Main COMSPHERE 3900 Series Modems Models 3910 and 3911 Point-to-Point/Multipoint Warranty, Sales, and Service Information Trademarks Important Safety Instructions Notices WARNING Table of Contents Preface 1. Introduction 2. Modem Installation Page 10. Call Setup Branch 11. Talk/Data Branch 12. Dial Access Security 13. Remote Branch 14. AT Command Set and S-Registers Page List of Figures Page List of Tables Page Preface Objectives and Reader Assumptions How to Use this Manual Related Documents Introduction Features Multipoint Applications Leased Backup Applications COMSPHERE 391x Series Models Standalone Model 3910 4-Wire/2-Wire Modem COMSPHERE 3900 Series Modems 1-4 September 1998 3910-A2-GN32-40 Carrier-Mounted Model 3911 4-Wire/2-Wire Modem Figure 1-2. Model 3911 Government Requirements and Equipment Return United States Page Canada Technical Specifications Page Page Modem Installation 391x Series Modem Package Customer-Supplied Equipment Model 3910 Modem Installation Connecting Cables to the Model 3910 Modems Figure 2-1. Model 3910 Rear Panel and Power Supply DTE Connection Model 3910 4-Wire/2-Wire Leased-Line Connection Dial Network Connection Model 3910 Dial Backup Connection Model 3910 Leased Backup Connection Network Management System Connection Power Supply Connection Modem Power-Up Selecting Factory Configuration Options Using the Diagnostic Control Panel (DCP) Using AT Commands Page Removing and Replacing Model 3910 Modems Model 3911 Modem Installation Page Page Removing and Replacing Model 3911 Modems DCP Operation Diagnostic Control Panels Model 3910 Diagnostic Control Panel Model 3911 Faceplate and Shared Diagnostic Control Panel (SDCP) Status Indicators Figure 3-2. Optional SDCP, Model 3911 Faceplate, and Optional SDU Page Diagnostic Control Panel Operation LCD Display Hidden Choice Indicators Other Indicators Keypad Menu Structure Top-Level Menu Status and Operational Messages Page Page Page Page Quick Configuration Display Page 4-13910-A2-GN32-40 September 1998 Status Branch Status Device Health and Status (DeviceHS) Page Page VF Identity DTE Backup Page Page Options Record Page Page DCP Configuration Figure 5-1. DCP Configuration Process Figure 5-2. AT Command Configuration Process COMSPHERE 3900 Series Modems 5-4 September 1998 3910-A2-GN32-40 Configure Branch Configure Editing and Saving a Configuration Option Page Page Summary Configuration Tables DTE Interface Page Page Page Page Page Page Page Page Page DTE Dialer Page Page Page Page Page Line Dialer Page Page Page Page Dial Line Page Page Leased Line Page Page Page Page V.42/MNP/Buffer Page Page Page Page Page Page Page Test Page Misc Page Page Security Page Poll List Branch Display Clear Change Page Add Acquire Page 7-13910-A2-GN32-40 September 1998 Control Branch Control Speaker Reset Data Stream EIA LEDs Make Busy/Remove Make Busy Service Line/Disconnect Service Line Download Software Selecting Clone Remote Clone Remote in Point-to-Point Configurations Clone Remote in Broadcast Configurations Cloning DC Broadcast Remote Viewing DC Broadcast Clone Results Clone Remote in Multipoint Configurations Cloning a Single TMp Remote Cloning a Multiple TMp Remote Viewing Multiple TMp Clone Results Implementing a Clone Remote Operation VF Thresholds Update Page Page Page Test Branch Abort Self Loc Analog Loop Rem Digital Loop Loc Digital Loop Pattern Page Page Page Sub-Network Health and Status Branch Page Call Setup Branch Dial Disconnect Answer Dial Standby/Return to Dial XX Change Directory Entering Telephone Numbers and Dial Command Modifiers into Directory Locations Page Directory Status (Does Not Appear in North America) Page Talk/Data Branch Manual Dialing When the Remote Modem is Configured for Auto-Answer Manual Dialing When the Remote Modem is Configured for Manual Answer Page Dial Access Security Originate Access Security Answer Access Security VF-Side Passwords DTE-Side Passwords Combination of VF-Side and DTE-Side Passwords Security Branch Set Access Ctrl Admin Password? EditPasswdTable Select Index Page Page Set Answer Sec Set Orig Sec Set Admin PsWd Reset Security Security Configuration Options Page Page Security Password Entry Techniques Answer Access Password (VF-Side and DTE-Side Entry Techniques) Originate Access Password Database Table Examples Page Page Dial Access Security Page Remote Branch Page Page Page Diagnostic Control Panel Access Page AT Command Set and S-Registers Operating Modes Switching Between Data Mode and Online Command Mode Escape Sequence and Escape Guard Time Command Guidelines Result Codes AT Command List AT Command Format Page Page Page Page Page Page Page Page Page S-Register List S-Register Format Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page B Troubleshooting Page Page Page Page Page Page EIA-232-D Pin Assignments VF Connector Pin Assignments Page Page Figure C-4. Wiring Diagram 25-Pin Crossover Cable ITU-T V.25bis Dialing Commands and Responses D Call Request Commands Call Request with Number Provided (CRN) Call Request with Stored Memory Address Provided (CRS) Call Response Call Failure Indication (CFI) Call Connecting (CNX) Delayed Call Indicator Call Answer Commands Incoming Call (INC) Disregard Incoming Call (DIC) Connect Incoming Call (CIC) Program Normal (PRN) Request List of Delayed Numbers (RLD) Request List of Forbidden Numbers (RLF) Request List of Stored Numbers (RLN) List Delayed Numbers Response (LSD) List Forbidden Numbers Response (LSF) List Stored Numbers Response (LSN) Command Response Valid (VAL) Invalid (INV) Page Page E ASCII Character Table Page Page Page Page (1 of 7) (2 of 7) (3 of 7) (4 of 7) (5 of 7) (6 of 7) (7 of 7) Page Point-to-Point Multipoint Point-to-Point with Automatic Dial Backup Point-to-Point with Network Management Carrier with Network Management Extended Multipoint Figure G-6 shows a sample configuration for extended multipoint applications. Figure G-6. Sample Configuration Extended Multipoint Page Extended Diagnostics Adapter H Equipment List Page Glossary Page Page Page Page Page Page Page Index A B C D E F G H I K L M N O P R S T U V W X