1. For internal calls, only the extension needs to be entered.
2. When dialing external telephone numbers, you must first dial ‘0’, then enter the external number.
3. To complete dialling, in either case press the line/call key, pick up the receiver or select the programme key for ‘Dial’ in the display. If the receiver is not picked up, the call is placed in hands-free mode.
4. To end the call, return the receiver to the cradle (in hands-free mode simply press the cancel key ).