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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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