See also:

Answer Or Reject An- Incoming Call — Call Currently In Progress
If a call is currently in progress and you have another incoming call, you will hear the same network tones for call waiting that you normally hear when using your mobile phone. Press the butto ...

Voice Mail Calling
To learn how to access your voice mail, refer to “Working with Automated Systems”. ...

Conference Call
When two calls are in progress (one active and one on hold), press and hold the button until you hear a double beep indicating that the two calls have been joined into one conference call. ...