AT&T System 85 manual 8400B Plus data module can be desk-mounted

8400B Plus Data Module

If the communications port on the terminal device is a 25-pin interface, use a

25-pin EIA-232-D cord, plus the supplied M9/F25 Adapter to connect the data module to the terminal device.

Mounting Options

The 8400B Plus data module can be desk-mounted.

Color Options

The 8400B Plus data module is available only in black.

Tests

The 8400B Plus data module supports the following test and maintenance features:

Local Loopback and Remote Loopback

Local Loopback Self Test and Remote Loop Self Test

DCP Looparound

Self-Test

Make Busy on Local Loop

Features

The 8400B Plus data module has the following basic features:

Nonvolatile, read-write memory for storing installation options, two data options profiles, and up to four telephone numbers

Full-duplex, 10-bit start/stop, asynchronous operation

Asynchronous data rates of 0.3, 1.2, 2.4, 4.8, 9.6, and 19.2 kbps

Even, odd, mark, and space parity options

Autobaud and autoparity

Linked operation with the associated DCP voice terminal

An AT command interface that emulates a Hayes 2400 Smartmodem and supports the following:

storage of the wait time for carrier detect interval (S-register S7)

The number stored in the S7 register establishes the time the 8400B Plus data module will wait for call set up to be completed. This number can be set for any value up to a maximum of 255 seconds (with a default to 60 seconds).

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