User guide

SIP Setting
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SIP Register – The IP address of the SIP registrar server. A registrar is a server that
accepts SIP register requests and places the information it receives in those
requests into the location service for the domain it handles.
SIP Register Port Number – The TCP port number used by the VoIP service
provider’s register server. (Range: 1-65535; Default: 5060)
Proxy Address – Address of the VoIP service provider SIP proxy server.
Proxy Port – The TCP port number used by the VoIP service provider’s SIP proxy
server. (Range: 1-65535; Default: 5060)
SIP Setting
From the VoIP SIP Setting page you can configure SIP parameter details.
Figure 7-2 SIP Setting
RTP TX Packet Size – Specifies a maximum amount of time for transmission of a
RTP data packet. (Options: 10, 20, 30 ms; Default: 20 ms)
RTP Port Base/Limit – The Real-time Transport Protocol (RTP) and Real-time
Control Protocol (RTCP) do not use specified port numbers. You can specify a port
range that the RTP and RTCP traffic can use. Enter the port Base and Limit to define
the range. (Range: 1024-65535)
Stun Server – STUN (Simple Traversal of UDP through NAT (Network Address
Translation)) is a protocol that assists devices behind a NAT firewall or router with