Grandstream GXP2160, GXP2140, GXP2130, GXP2170
& GXP2135 Quick Reference Sheet
GXP2130 GXP2140 GXP2160
GXP2135 GXP2170
What are these keys on my handset for?
Message  Press to view voicemail messages. 
Contacts  Press to view and edit personal address book. 
Transfer Press to blind transfer a call to another extension. 
Hold  Press to put a call on hold or resume the call. 
Headset  Press to switch to headset mode. 
Mute  Press to mute or un-mute the call. 
Speaker 
Send/Redial 
Volume