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3920-A2-GK47-10 February 2002

COMSPHERE 3920Plus Modems

Model Number 3920-A2-xxx

Installation Instructions

Document Number 3920-A2-GK47-10

February 2002

Overview

The COMSPHERE Model 3920Plus 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.

The COMSPHERE 3920Plus modem is available in several models. This document refers to model numbers in

the 3920-A2 series, which are singleport modems with single-rate power supplies. Modems in the 3920-A1 series

have universal power supplies and are described in the COMSPHERE 3900 Series Modems, Models 3920Plus

and 3921Plus, Installation Instructions, Document No. 3920-A2-GK41.

Through downloading capability, any Model 3920Plus 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 3 of the COMSPHERE 392xPlus

Modems, Models 3920Plus and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30.

NOTE: Do not download firmware with a release number lower than 4.0 to a Model 3920-A2-xxx modem.

Model 3920Plus 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 3920Plus modems are compatible with a number of dialing methods and protocols, such as asynchronous

AT commands, CCITT V.25bis dialing, and the DCP. The DCP allows you to use the Model 3920Plus modem in

a variety of applications and environments while also providing control over modem configuration, dialing, and

diagnostics. The Model 3920Plus modems come with preset factory configurations that are the most often used

modem settings.

This document provides the following information:

• A description of the 3920Plus modem

• 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

1 2 3 4 5 6 ... 13 14

Inhaltsverzeichnis

Seite 1 - Overview

13920-A2-GK47-10 February 2002COMSPHERE 3920Plus ModemsModel Number 3920-A2-xxxInstallation InstructionsDocument Number 3920-A2-GK47-10February 2002Ov

Seite 2 - COMSPHERE 3920Plus Modem

10February 2002 3920-A2-GK47-10Important Safety Instructions1. Read and follow all warning notices and instructions marked on the product or included

Seite 3 - 392xPlus Modem Package

113920-A2-GK47-10 February 2002NoticesTHIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE,PURSUANT TO PART

Seite 4

12February 2002 3920-A2-GK47-104. If the 3920Plus modem causes harm to the telephone network, the telephone company will notify you inadvance that tem

Seite 5 - Dial Network Connection

133920-A2-GK47-10 February 2002Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by thesupplier.

Seite 6 - Dial Backup Connection

*3920-A2-GK47-10**3920–A2–GK47–10*

Seite 7 - Model 3920Plus Modem Power-Up

2February 2002 3920-A2-GK47-10This document is intended to be used in conjunction with the COMSPHERE 392xPlus Modems, Models 3920Plusand 3921Plus, Tec

Seite 8 - Menu Tree

33920-A2-GK47-10 February 2002392xPlus Modem PackageAfter opening the modem’s package, check for damage and verify that the following items are presen

Seite 9 - Gain Hts

4February 2002 3920-A2-GK47-10Model 3920Plus Input Voltage RequirementsThe power supply used with model number 3920-A2-201 is a wall-mount transformer

Seite 10 - Important Safety Instructions

53920-A2-GK47-10 February 2002Data Terminal Equipment ConnectionUse the following steps to connect an EIA-232-D cable from the modem to a DTE:1. Make

Seite 11 - United States

6February 2002 3920-A2-GK47-10Leased Backup ConnectionUse the following steps to connect the modem to the 2-wire leased backup network interface:1. In

Seite 12 - February 2002 3920-A2-GK47-10

73920-A2-GK47-10 February 2002Model 3920Plus Modem Power-UpOnce your modem is properly connected to the power supply, leased and/or dial lines, and th

Seite 13 - 3920-A2-GK47-10 February 2002

8February 2002 3920-A2-GK47-10Using the Diagnostic Control Panel (DCP)The DCP’s liquid crystal display (LCD) consists of two 16-character lines which

Seite 14 - *3920-A2-GK47-10*

93920-A2-GK47-10 February 2002Status Configure PList Control Test SubHS Call_Setup Tlk/Data Security RemoteDoes not appear in TMp Control mode.Does no

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