AT&T System 85 manual 7500B Data Module, Applications

8400B Plus Data Module

7500B Data Module

The 7500B Data Module is a terminal adapter primarily intended for connecting data terminal equipment (DTE) or data communications equipment (DCE) to the ISDN network. It can be con- figured in a number of ways to allow the attached DTE and DCE to send and receive data through the digital network. The 7500B has no voice functions.

Applications

The 7500B Data Module can be used with the DEFINITY G2 through a 4-wire‘‘T’’-interface. It is used by the customer who wants to connect his DCE and DTE with DTE, DCE, or host processor at another location using an ISDN network. The 7500B data module cannot be used in a modem pooling or Host Access arrangement on DEFINITY G2.

Physical Description

Dimensions

Note: The following dimensions are approximate.

Width = 7 inches

Depth (front and rear) = 8-3/4 inches

Height = 1-3/4 inches

Lights

POWER/TEST Light

This red light goes on when the 7500B data module is on and flashes during all tests.

DATA Light

This green light goes on when a data call is in progress. It flashes during self-test and when receiving an incoming data call that has not been answered.

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