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Paradyne COMSPHERE 3920Plus Installation Instructions Manual

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COMSPHERE 392xPlus Modems
Models 3920Plus and 3921Plus
Installation Instructions
Document Number 3920-A2-GK41-60
February 2002
Overview
The COMSPHERE Model 392xPlus modems are full-feature, high-speed leased modems, providing reliable
asynchronous and synchronous operation over leased or dial-line networks with data rates as high as 33,600 bps.
Through downloading capability, any Model 392xPlus modem is upgradable to the latest firmware, requiring no
new hardware investment or on-site personnel, with little or no downtime. For more information on downloading
capability, refer to the Automatic Firmware Download section in Chapter 7, Control Branch, of the COMSPHERE
392xPlus Modems, Models 3920Plus and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30.
Model 392xPlus modems support a wide range of modulation schemes and offer control using either AT
commands, the diagnostic control panel (DCP) or the optional COMSPHERE 6700 and 6800 Series Network
Management Systems (NMS). The NMS performs extensive monitoring, testing, reporting, and restoral functions
to assist in managing your network.
Model 392xPlus modems are compatible with a number of dialing methods and protocols, such as asynchronous
AT commands, ITU-T V.25bis dialing, and the DCP. The DCP allows you to use the Model 392xPlus modem in a
variety of applications and environments while also providing control over modem configuration, dialing, and
diagnostics. The Model 392xPlus modems come with preset factory configurations that are the most often used
modem settings.
This document provides the following information:
A description of the COMSPHERE 392xPlus models
A list of equipment supplied with the modem
A list of customer-supplied equipment
Installation instructions
A 392xPlus Menu tree
Important safety instructions
Regulatory notices
Government requirements and equipment return information
This document is intended to be used in conjunction with the COMSPHERE 392xPlus Modems, Models 3920Plus
and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30. This manual is available on the
World Wide Web at www.paradyne.com. Select Library
Modems. Contact your sales or service representative to order product documentation.
3920-A2-GK41-60
Technical Manuals
February 2002
Business Class Analog
1

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Summary of Contents for Paradyne COMSPHERE 3920Plus

  • Page 1 Regulatory notices Government requirements and equipment return information This document is intended to be used in conjunction with the COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30. This manual is available on the World Wide Web at www.paradyne.com. Select Library Modems.

  • Page 2: Comsphere 392Xplus Models

    COMSPHERE 392xPlus 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). Model 3921Plus carrier-mounted singleport modem (model no 3921-B1-01x). Model 3921Plus carrier-mounted multiport modem (model no. 3921-B1-00x).
  • Page 3 “mux”) can be enabled or disabled to allow a greater degree of application flexibility. The 3920Plus multiport modem also operates over a 4-wire/2-wire leased or dial network and is controlled using the same DCP employed on the Model 3920Plus singleport standalone modem.

  • Page 4: Model 3921Plus Singleport Carrier-Mounted Modem

    Model 3921Plus Singleport Carrier-Mounted Modem The Model 3921Plus singleport is a carrier-mounted modem (Figure 2) capable of either 4-wire/2-wire leased-line or dial operation. The modem installs into a COMSPHERE 3000 Series Carrier, occupying a single slot. The modem’s faceplate has sixteen (16) LED status indicators for displaying modem activity and an audio speaker jack for the carrier’s optional speaker.
  • Page 5 3921Plus modem is through the shared diagnostic control panel (SDCP), an optional feature which operates in a manner similar to the DCP on the 3920Plus modems. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation, in Document No. 3920-A2-GH30.

  • Page 6: 392Xplus Modem Package

    After opening the modem’s package, check for damage and verify that the following items are present: For standalone models Installation instructions Model 3920Plus modem Power supply with power cord One 6-position, 4-wire modular cord (in selected models) One 8-position, 8-wire modular cord (in selected models)

  • Page 7: Model 3920Plus Modem Installation

    Model 3920Plus Input Voltage Requirements The power supply used with the Model 3920Plus modem (Figure 4) is auto-sensing and capable of operating (without reconfiguration) with input voltages from 100 Vac to 250 Vac, and input frequencies from 50 Hz to 60 Hz.

  • Page 8: Connecting Cables To The Model 3920Plus Modem

    Instructions for connecting cables to the TELCO jack types using the appropriate cables apply to both singleport and multiport Model 3920Plus modems. Figure 4 illustrates the Model 3920Plus multiport modem. For pin assignments, refer to Appendix C, Pin Assignments, in Document No. 3920-A2-GH30.

  • Page 9: Data Terminal Equipment Connection

    1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED (Figure 4). 2. Insert the other end of the modular cord into the leased-line network interface. 3. If the Model 3920Plus has a backup line, follow the steps listed in the Dial Backup Connection section. 3920-A2-GK41-60...
  • Page 10 3600-F3-300, Installation Instructions, for a description of the 3600 Hubbing Device. Installation for the 3920Plus is the same as for the 3610 DSU. 2. Connect the 3600 Hubbing Device to the network management system (Figure G-5 in Appendix G of Document No.

  • Page 11: Removing And Replacing The Model 3920Plus Modem

    If the modem is to be removed for service, return it to the company using the procedures described in the Government Requirements and Equipment Return section. 6. Install the replacement modem as described in the Model 3920Plus Modem Installation section, and configure it the same way as the modem being replaced.
  • Page 12 1. At the back of the carrier, install the connector plates (Figure 5). Make sure the plate(s) use the same slot positions as that intended for the modem. Loosely fasten the plate(s). This allows for slight adjustments later when installing the modem. MULTIPORT CONNECTOR PLATES PORT 3...
  • Page 13 3000 SERIES CARRIER MODEL 3921 Plus SINGLEPORT MODEM LATCH CIRCUIT CARD GUIDES 3000 SERIES CARRIER MODEL 3921 Plus MULTIPORT MODEM LATCH CIRCUIT CARD GUIDES 495-14708 Figure 6. Installing the Model 3921Plus Modem 3920-A2-GK41-60 February 2002...
  • Page 14 If the 3921Plus modem is to communicate with an installed SDCP, install the modem as described above and perform the following steps: 1. Press the key on the SDCP. The Carr:Slot screen appears with the cursor on the slot selection Select position (01 on the first LCD line in following screen example).

  • Page 15: Removing The Model 3921Plus Modem

    CLOSED Removing the Model 3921Plus Modem When removing the Model 3921Plus modem from the carrier, always use a ground strap when handling the modem. Always store the 3921Plus modems in an antistatic bag when it is removed from the carrier. It is not necessary to power down the carrier to remove the Model 3921Plus modem.

  • Page 16: Selecting Factory Configuration Options

    Model 392xPlus Modem Power-Up Once your modem is properly connected to the power supply, leased and/or dial lines, and the DTE, press the modem’s back panel power switch to the ON position. The modem begins a power-up self-test, in which all DCP LEDs light.

  • Page 17: Using The Diagnostic Control Panel (Dcp)

    Using the Diagnostic Control Panel (DCP) The DCP’s liquid crystal display (LCD) consists of two 16-character lines which display modem status, control functions, and configuration options as well as indicating your location in the Top-Level menu tree. To change a factory template from the Sync Leased preset configuration using the DCP, perform the following steps: 1.

  • Page 18: Menu Tree

    Menu Tree The following pages provide a graphic representation of the general menu structure of the front panel or SDCP display. Use the Menu Tree for reference when performing the modem’s various functions. February 2002 3920-A2-GK41-60...
  • Page 19 Port Select (Multiport mode) DeviceHS Identity V.34 Major Ser# Line = Pri 4W APL Minor Mod# Line = Pri 2W APL Status FRev Line = Bkup 2W APL Dial HPt# Line = Dial Backup DTE Rate Thresh FPt# Line = Dial ONLY Cmp Ratio Security Country...
  • Page 20 from previous page Control Test Self Abort Loc_Analog_Loop Speaker Data_Stream Make_Busy RemoveMakeBusy Reset EIA_LEDS SubHS Call_Setup (Dial Backup only) Dial Answer Change_Directory Disconnect Dial_Standby Return_to_Dial Directory Locations 1 – 24 Rem_Digital_Loop Pattern Loc_Digital_Loop (3921 Plus only) Download_Code (DownloadSoftware) EditPassWdTable Service_Line VF_Thresh_Update DiscServLine February 2002...

  • Page 21: Important Safety Instructions

    Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in this document. 2. This product is intended to be used with a three-wire grounding type plug — a plug which has a grounding pin.

  • Page 22: Government Requirements And Equipment Return

    FCC registration number and ringer equivalence number (REN) for this equipment. The label is located on the bottom of the Model 3920Plus modem and on the modem’s circuit card assembly on the Model 3921Plus modem. If requested, this information must be provided to the telephone company.
  • Page 23 3. The ringer equivalence (REN) is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum RENs for the calling area.
  • Page 24 Users should ensure for their own protection that the electrical ground connections of the power utility, telephone line and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.

This manual is also suitable for:

3921plusComsphere 3921plus

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