See also:

TIME Button (Auxiliary Mode)
Press this button to change the display to time of day. The time of day will display for five seconds (when the ignition is OFF). ...

Toggling Between Calls
If two calls are in progress (one active and one on hold), press the button until you hear a single beep, indicating that the active and hold status of the two calls have switched. Only one call ...

Protection
For appearance purposes, you may wish to protect the acrylic (cloth) top periodically. Afabric protectant such as Scotchguard is suggested. The top should be clean and dry before application of ...