Specifications

The ISDN 8503 Voice Terminal
Issue 11 December 1999
17-23
MEMORY button
When the user presses the MEMORY button and one of the 12 dial pad keys
(memory-dialing locations), while off-hook, the voice terminal automatically dials
the number or access code stored on that dial pad key.
The user can clear a memory-dialing location by entering program mode, and
then pressing the MEMORY button and the appropriate dial pad key on which the
number or code is stored.
REDIAL button
With the Redial feature, the user can redial the telephone number last dialed from
the dial pad. (The handset must be off-hook.) Up to 37 digits can be redialed.
MUTE button
While on a call, the user can press the MUTE button (the red light next to the
button goes on), so the user can converse with someone in the same room
without the other party hearing the conversation. The user is placed in listen-only
mode. To disable the feature, the user presses the MUTE button a second time.
(The red light goes off.)
Volume control button
When the user is on a call, the Volume “arrow” button raises or lowers the volume
on the handset. When the handset is on-hook, this button raises or lowers the
ringer volume.
Self-Test
The 8503T voice terminal is equipped with a Self-Test feature. When the user
presses the PROGRAM button and then the DROP/TEST button, while on-hook,
the user can test the button lights and the ringer.
Other Physical Features
Handset
The 8503T voice terminal is equipped with a K-type wideband handset. With the
8503T voice terminal, this handset has high fidelity audio capabilities.
A K-type Noisy Environment Handset (PEC: 31052A) can also be purchased and
connected to the 8503T voice terminal.
Dial pad
The 8503T voice terminal is equipped with a standard 12-button touch-tone dial
pad for dialing telephone numbers or accessing features.