User Manual

11
3.12 Deny answering call
Press to refuse answering other call-in phone call.
4. Phone set settings
4.1 Modulate earphone volume
While having a call, use and to modulate earphone’s sound volume level.
4.2 Set up microphone to mute
Press while having a phone call and system will come to mute mode. It will show
up mute string and you now can hear the prompt sound from earphone. Press
button once again to close the mute function, the prompt mute then will cease off.
4.3 Modulate external ring volume
Modulate external ring’s volume by use and buttons. There are five levels in
total.
Press once and it will increase one level of sound volume and system will
make ”beep” sound in response.
Press once and it will decrease one level of sound volume and system also will
make ”beep” sound in response.