Available Operations during a Call

To adjust the ringtone volume

Press VOL (volume) +/– while receiving a call.

To adjust the talker’s voice volume

Press VOL (volume) +/– during a call.

To adjust the volume for the other party (Mic gain adjustment)

During a handsfree call, touch (option), then set [MIC Gain] to [High], [Middle], or [Low].

To switch between handsfree mode and handheld mode

During a call, touch (speaker/phone) to switch the phone call audio between the unit and mobile phone.


  • Depending on the mobile phone, this operation may not be available.

To answer a receiving call automatically

Touch (option), then set [Auto Answer] to [On].
You cannot change the settings during a call or while making or receiving a call. It is required to be set in advance.