The incoming call indicator lamp flashes when a call is received. (When a group call is received the flexible key assigned to the group receiving the call will flash.)

The flexible keys can be assigned various functions. For example, when a flexible key is configured as an outside line key, its colour indicates the status of that line, and the key can be used to initiate or answer calls.

These keys can be programmed with special numbers, extensions, and outside numbers for one-touch dialling.

The SELECT key toggles between the two numbers assigned to each one-touch key.

The function keys are used for tasks, such as adjusting the phone's volume, displaying the incoming and outgoing call history, as well as searching the phonebook.

The CALL key lets you make calls using the line assigned to the key.

The EXTENSION key flashes to indicate an incoming call on an extension and lights up to indicate a call in progress on an extension. It is also used for dial forwarding while a call is in progress.

The MUTE key is used during hands-free calls.

The REDIAL key allows one-touch redialing of the last number called.

The SPEAKER key toggles between loudspeaker monitoring and the handset.

The HOLD key is used to place calls on an extension or outside line on hold.