Attended Transfer (Att. transfer) : Transfer the calls with consult user first
How to att. transfer a phone call using Grandstream GXP 2135
** you must have 2 line configured in your IP phone
Step 1 : Receive a call, and press "Line 2"
Step 2 : Dial the extension or select it from your local phone book
Step 3 : Consult the user first, then press”Transfer” follow by “Line 1”