NEC SL1100 Issue 6.0Networking Manual 7 - 95.7 Network Address Port Translation (NAPT)NEC SL1100 SIP trunk can pass through a NAPT router. The related systemdata is Program 10-12-06 : CPU-B1 Network Setup – NAPT Router (On/Off) andProgram 10-12-07 : CPU-B1 Network Setup – NAPT Router IP Address (do notset with a dynamic router IP address).Incorrect settings with these two programs can cause one-way audioproblems.The WAN global IP is set in the system data by the user or automatically usingthe NAT traversal feature (UPnP). The related system data is 10-37-01 : UPnPSetup – UPnP Mode (On/Off) and 10-37-02 : UPnP Setup – UPnP Interval(polling timer).5.8 Quality of Service (QoS)NEC SL1100 SIP trunks support Type of Service (ToS) (Program 84-10 : ToSSetup, protocol type = 6 (SIP Trunk).5.9 Registration5.9.1 Registration ProcessWhen the NEC SL1100 system registers its own IDs with an externalSIP server, the following system data are sent:The NEC SL1100 sends the REGISTER Message when the systemstarts up, register timer expires, CPU LAN links and recover timerexpires.5.9.2 Registration Recover ProcessThe NEC SL1100 has a registration recovery process for registrationfailure. When a registration fails, the NEC SL1100 sets an internalrecover timer. When the timer expires, the NEC SL1100 sends aREGISTER message per register ID again.Register ID # User ID AuthenticationIDAuthenticationPasswordRegister ID 0 10-36-02 10-36-03 10-36-04Register ID 1 10-36-02 10-36-03 10-36-04::10-36-02 10-36-03 10-36-04Register ID 31 10-36-02 10-36-03 10-36-04
