Available Operations During a Call
To adjust the ringtone volume
Rotate the volume control dial while receiving a call.
To adjust the talker’s voice volume
Rotate the volume control dial 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 reduce echo and noise (Echo/noise canceler mode)
During a call, touch (option), then set [Speech Quality] to [Mode 1] or [Mode 2].
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.
Note
- Depending on the mobile phone, this operation may not be available.
To answer an incoming call automatically
Touch (option), then set [Auto Answer] to [ON].
