AT&T System 85 manual 449

ISDN 8528T Voice Terminal

Speaker (Listen-only) Feature

The 8528T voice terminal can be optioned for the Speakerphone (listen and speak) or the Speaker (listen-only) feature. (The voice 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 voice 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 handset or with the built-in speakerphone.

EXIT button

The EXIT button is used for exiting a softkey feature and returning to Normal call-handling Mode.

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 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 and tones such as the confirmation and error tone.

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