AT&T System 85 manual 435

ISDN 8520T Voice/Data Terminal

Speaker (Listen-only) Feature

The 8520T voice/data terminal can be optioned for the Speakerphone (listen and speak) or the Speaker (listen-only) feature. (The terminal is shipped with the Speakerphone setting in place.)

The Speaker (listen-only) capability allows a user to engage in a one-way conversation with the far-end. The user can only listen to the far-end; the user is not able to transmit his voice over the speaker. Use the SPEAKER button on the front of the terminal for turning on and off the speaker or speakerphone. To speak with the far-end, the user must use the handset. Lifting the handset turns off the speaker.

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). The Mute function works only with the speakerphone and the handset.

EXIT button

The EXIT button is used for exiting a softkey feature and returning to the user-selected Home Screen. The top two lines again show you the time and date and any relevant system informa- tion.

VOLUME control button

When the user is on a call using the speakerphone, the VOLUME ‘‘arrow’’ button raises or lowers the volume on the speakerphone. Likewise, when the user is on a call using the handset, the VOLUME control button changes the receive level of the handset. When the handset is on-hook and the speakerphone is off, this button raises or lowers the ringer volume or tones such as the confirmation or error tone.

Softkeys

The 10 unlabeled buttons located on both sides of the display correspond to words on the display screen. Softkeys are used along with display control keys to access the following features:

Setting the clock

Setting the speakerphone

Adding, editing, and deleting the numbers and associated names (and optional group names) in the voice terminal Directory

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