Features

Other lights

The eight other lights show the RS-232 status information, the status of two options, and call status information. These lights are red.

The 7400B and 7400B Plus data modules are equipped with the following jacks: Port 1 (RS-232-C or -D)

PHONE (to voice terminal) (RJ-45)

LINE (to switch) (RJ-45)

POWER.

The 7400B and 7400B Plus data modules can be desk-mounted as a stand-alone unit.

The 7400B and 7400B Plus data modules are available only in misty cream.

The 7400B and 7400B Plus data modules support 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

The 7400B and 7400B Plus data modules have the following basic features: DCP mode 2 operation only

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

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AT&T System 85 manual Features