Installation and User’s Instructions
555-015-173
Using the Headset Adapter
Issue 1, February 1999 Comcode 108458878
9
To mute the headset so that the other party cannot
hear you
Press the ON/MUTE button.
•
The red Mute light goes on.
To turn off the mute function and resume
conversation
Press the ON/MUTE button again.
•
The red Mute light goes off.
!
CAUTION:
If you press the OFF button, you will disconnect the current call.
To raise or lower the direct headset listening level
To raise the volume, slide the volume lever upwards, away from you;
to lower the volume, slide the volume lever downwards, toward you.
Note:
While the telephone is on-hook, listening levels must be
adjusted at the external audio equipment, not on the headset
adapter or on the telephone.
When using the plug-prong headset interface, set the volume
control to the minimum level and then adjust the listening level
on the external adapter.
