Four Channel’s GSM VoIP Gateway
37
3.6.2.2 SMS Relay To GSM Network
When GoIP_4 receive a message come from SIP server as follow:
The GoIP_4 will send a SMS to GSM number
13682626800
, the SMS content is “
Hello
world
”.
3.7 PSTN Caller ID Transparent
In SIP protocol, GoIP_4 support PSTN Caller ID transparent to VoIP via SIP Invite signaling;