I cannot hear the person on the other end of a call.
Adjust the TK30 volume using the rotary knob. If a call is on hold, you will not hear the call audio; to swap between the call held and call active press the green button while on a call.
Adjust the TK30 volume using the rotary knob. If a call is on hold, you will not hear the call audio; to swap between the call held and call active press the green button while on a call.