AT&T System 85 manual 801A Expansion Module, Applications

Function Key Modules

801A Expansion Module

The 801A Expansion Module is an optional device which can be connected to an 8434DX (8434D02A) voice terminal to extend the number of call appearance and feature buttons available on the voice terminal.

IMPORTANT: This expansion module can be connected ONLY to an 8434DX model con- nected to a DEFINITY G3V3.3 (or later) switch. The 8434DX has an Ex Mod jack (labeled ‘‘EX MOD’’) to which the 801A can be connected. Before installing the expansion module to an 8434DX, make sure that the set is labeled ‘‘8434DX,’’ has the ‘‘EX MOD’’ jack on the bottom of the set, and is connected to a DEFINITY G3V3.3 (or later) switch.

Applications

At this time, the 801A Expansion Module can be connected only to an 8434DX voice terminal.

Physical Description

Buttons

The expansion module has 24 buttons arranged in two columns.

The top 18 buttons (that is, the top nine buttons in each column) have a red and a green light next to them. These buttons can be used for call appearances or features.

The bottom six buttons (that is, the last three buttons in each column) have a single green status light next to them. These buttons can be used for features only.

Mounting

The 801A Expansion Module is connected to an 8434DX voice terminal with a DW-67AP cord. This cord is plugged into the LINE jack on the voice terminal and then plugged into the TELSET jack on the expansion module.

Color Options

The Expansion Module is available in black or AT&T white.

4-19