Four-Channel GSM VoIP Gateway
32
A mobile phone’s number is (86)13800000000, it sends a SMS “8675588228822” to GoIP4’s
GSM SIM card. When GoIP4 device receives this SMS, it will automatically call the number
8675588228822, and the caller is number 8613800000000.
The sent-out signaling as follow:
B. GoIP4 use SMS Dial Mode 1 and add a prefix as 999:
A mobile phone’s number is (86)13800000000, it sends a SMS “8675588228822” to GoIP4’s
GSM SIM card. When GoIP4 device receives this SMS, it will automatically call the number
9998675588228822, and the caller is number 8613800000000.
The sent-out signaling as follow: