Grandstream Networks GSM gateway One Location in the World, Another Location in the World

Februaray-2006 Page 31 / 42 MasterVoIP VoIP to GSM Gateway
3.4 VoIP Master
3.4.1 What is the VoIP Master and how it works
This device connects GSM c ellular telephones to the internet, by way of VoIP (Voice over Internet Protocol) . A GSM module,
including a SIM card, is inst alled inside the VoIP device. A SIM car d is a smart card that is received with a subscription to a
cellular telephone network. This following is the communication s olution architecture enabled by the VoIP Master:
One Location in the
World
Another Location in the
World
IP Netwo rk
VoIP
Near 0 C ost!
GSM
Base Stati ons
GSM
Cellphones
GSM
Cellphones
VoIPMaster
Management
VoIP
Master
VoIP
Master
GSM
Cellphones