Voice Gateway 4FXS User Manual
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4.2.4 NatCfg
This device support NAT function, can visit network via LAN.
4.3 SIP Settings
SIP parameters are set pursuant to soft switch.
The service provider usually has set the server’s parameters beforehand. In case you
need to set them by yourself, please inquire the address, account and password from
the facilitator to register the server.