Grandstream Networks GSM gateway User Manual
Page 42

Februaray-2006 Page 42 / 42
MasterVoIP
VoIP to GSM Gateway
3.4.5.4 Call Back Settings
A call back feature is available with the VoIP master gateway. If person A is having a conversion via the VoIP master
gateway, and person B attempts to make a phone call via the same VoIP:
1. Person B will receive a busy signal.
2. If the telephone number of person B is listed in the Call Back settings of the VoIPMaster manager, when the phone
call of person A is completed, the VoIPMaster gateway will call person B and provide a telephone line that was
previously busy by person A.
To enable this feature perform the following:
1. On the right side of the window, set the box to ON.
2. Enter desired telephone numbers in the center of the window.
3. Next to each telephone number, set the box to ON.
4. Press Write Settings
.
VoIP Master
After making these settings, your VoIP gateway is ready for operation.