AT&T System 85 manual Speaker Button, Test button

8403 Voice Terminal

SPEAKER Button

The 8403 voice terminal is set for the 1-way, listen-only Speaker feature. The user can only listen to the far-end. To speak with the other party, the user must use the handset which turns off the speaker.

MUTE button

The MUTE button is a fixed feature button with a red status light. The MUTE button turns off the microphone of the handset so that a person can converse with another person in the room without the other party listening in.

VOLUME Control button

The 8403 voice terminal has a VOLUME ‘‘arrow’’ button on the front of the set. This button has several functions. When the user is using the 1-way speaker, the VOLUME button controls the volume of the speaker. When the user is on a call using the handset, the VOLUME button con- trols the volume of the handset. When the voice terminal is idle, the button controls the volume of the tone ringer.

TEST button

When the voice terminal is initially powered up, the green light next to the TEST button flashes if the link with the PBX is not (or not yet) operational. The light changes to steady green when the voice terminal is able to communicate with the PBX. After the voice terminal is powered up, you can press the TEST button to test the lights on your voice terminal.

Other Physical Features

Handset

The 8403 voice terminal is equipped with a K-type handset.

Dial pad

The 8403 voice terminal is equipped with a 12-button touch-tone dial pad. The letters ‘‘Q’’ and ‘‘Z’’ have been added to the appropriate dial pad keys for directory access, and the ‘‘5’’ button on the dial pad has raised bars for visually-impaired users.

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