■ Switch a call to the connected device
To switch a call from the speakerphone to the connected device, switch
off the speakerphone, or press and hold the answer/end key for about 2
seconds. When the call is switched to the connected device, is
displayed.
To switch the call back to the speakerphone, switch on the
speakerphone (if it is off), or press and hold the answer/end key for
about 2 seconds.