Paradyne 3800Plus, COMSPHERE 3820Plus 3982-A1-401 Installation Instructions Manual

3

TM

COMSPHERE 3820

Plus

Modems
Model 3982-A1-401
Installation Instructions

Document Number 3982-A2-GK40-10

November 1996

Overview

The 3820Plus modem, Model 3982-A1-401 (Figure 1),
has different installation instructions than those shown in
the COMSPHERE 3800Plus Modems User’s Guide
(3980-A2-GB30). The Model 3982-A1-401 modem has
an 8-pin modular jack for leased-line connection and a
6-pin modular jack for dial-line connection. The model

DIAGNOSTIC

CONTROL

PANEL

LCD AND

KEYPAD

shown in the User’s Guide has a single jack for leased-line
or dial-line connection.

Use these instructions to install your modem, and keep

them with your User’s Guide.

SPEAKER

STATUS

INDICAT ORS

Figure 1. 3820

POWER

CORD

DIAL

LEASED

Plus

Modem (Model 3982-A1-401)

POWER
SUPPLY

POWER
ON/OFF

POWER IN

NMS

DTE 1

496-14160-0

1

3820

Plus

Modem Installation

Before installing your modem, make sure your
installation site is clean and well-ventilated. Allow space
around the modem for installing cables and telephone
cords, and make sure the modem is located within reach
of the ac power outlet. The distance between your modem
and the DTE should be minimized if DTE data rates
exceed 19,200 bps. Also, low capacitance cables may be
necessary for speeds greater than 19,200 bps or distances
greater than 50 feet.

The rear panel of the 3820Plus modem has the
following switches and connectors (see Figure 2):

• An ON/Off power switch.

• An 8-pin DIN type power receptacle for the

table-top power supply.

• An 8-pin modular keyed jack for 2-wire leased

lines.

• A 6-pin modular keyed jack for dial (PSTN) lines.

• A 4-pin modular jack for network management

system (NMS) connection.

• A 25-pin DB-25-S receptacle for DTE interface.

DTE 1LEASED DIAL NMS PWR ON OFF

8-POSITION
PLUG FOR

LEASED-LINE
NETWORK

OPERATION

6-POSITION PLUG
FOR PERMISSIVE

DIAL NETWORK

OPERATION

DB-25-P
CONNECTOR
FOR DATA

TERMINAL
EQUIPMENT

OPERATION

SUB-MINIA TURE,
4-CONDUCTOR
PLUG FOR

NETWORK
MANAGEMENT
SYSTEM

OPERATION

POWER
SUPPLY

POWER
CORD

Figure 2. 3820

Plus

(Model 3982-A1-401) Rear Panel

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