Up / Down buttons on lever key and pushbutton panels

There is a pair of small blue buttons to adjust the volume level on the connection beneath each key display window on lever key and pushbutton panels.

Use the left (Down) button to reduce the volume and the right (Up) button to increase the volume.

You can also use the volume buttons to release a telephone line, in the same way as the TEL RELEASE function in the diagnostic menu.

To release the telephone line, press both of the Up and Down buttons together.

The label display changes to TEL RELEAS, and the telephone is put back on the hook. All latched keys on the local system are unlatched, killing all routes to the telephone. After approximately 5 seconds, the display starts displaying the configured label again.

If the panel does not have Line Release configured, then the call signal is sent to the label instead.

Note:

The volume buttons are also used to adjust some settings that are accessed through the panel menu, such as Sidetone Gain.