LevelOne WHG-311, User Manual, Page: 84 / 307

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The system provides SIP proxy for SIP clients (devices or soft clients) pass through NAT. After enable SIP proxy
server, all SIP traffic can pass through NAT with a selective but fixed WAN interface. If the SIP Registrar settings in
SIP client is same as the system setting, when the client try to access the SIP Registrar, system will let this client
login automatically and all SIP traffic can pass through.
Configure Dynamic Domain Name Service, go to: Users >> Authentication >> SIP .
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SIP: SIP authentication supports 4 Trusted SIP Registrar.
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IP Address: The IP address of the Trusted SIP Registrar.
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Remark: The administrator can enter extra information in this field for remark.
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Group: A Group option can be applied to the clients who login with SIP Authentication. Be noted that the
specific route of the applied Policy for the selected Group cannot conflict with the assigned WAN interface
for SIP authentication.
SIP Interface Configuration
To configure Dynamic Domain Name Service, go to: System >> Service Zones >> Service Zone Configuration .