User manual

Four-Channel GSM VoIP Gateway
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Single Server Mode: All four channels use same SIP account to connect to SIP
server.
Multiple Server Mode: Each channel use its own SIP account to connect to SIP server.
Trunk Gateway Mode: GoIP4 will act as a SIP proxy. Remote SIP clients can register
to GoIP4 and GoIP4 will process SIP requests on behalf of SIP
client.
GoIP4 Gateway’s SIP configure page as follow:
A Phone Number
Enter a SIP phone number.
B Display Name
Enter this field for the name to be displayed on the called VoIP party.
C) SIP Proxy
Enter the SIP proxy IP address or domain name. If the registration port is not 5060, then
add “:” and the port number. For example: sip.hybertone.com:8080.
D SIP Registrar Server
Enter the SIP registrar server IP address or domain name in this field. If the registration
port isn’t 5060, add “:” and the port number. For example: sip.hybertone.com:8080.
E Register Expiry(s)
Enter the register time (seconds) in this field. This is the maximum length of registration
that SIP server will keep your registration. If SIP server does not receive another SIP