A headset connected to a telephone needs to be explicitely enabled. Even plug and play headsets like USB headsets need to be enabled to let the phone know that the headset is really in use and should be served.
Enabling the headset has the following effects:
- a headset icon is displayed in the phone status line
- a normal inbound call is indicated by a ring tone in the headset
- an automatically connected inbound (announcement) call is connected to the headset (not to the speaker as usual)
- a call initiated by pressing the 'Redial' or the 'Enter' key while browsing a call list or a directory is connected to the headset
Headset call control can be preformed in different ways:
- by a phone key assigned to this purpose. Depending on the the phone this the
- IP200 - keypad Enter for outgoing call, keypad Space to hang up
- IP230 - Ok key
- IP240, IP241 - keypad Enter for outgoing call, keypad Space to hang up
- by the keys on the headset itself
- by a headset function key in Control mode
- Enable: In this mode the key simply toggles an internal 'serve headset' flag. This is useful when a headset is used from time to time only and enabling/disabling the headset via the telephone (Main Menu -> Phone setup -> Headset) is too time-consuming.
- Control: In this mode the key permits to initiate or to accept a call through the headset. This is useful in case the keys on the headset are not known to the phone firmware or inconvenient to handle.