PLANET VIP-251T - Manual (Page 36)

Other Settings
Other Settings include advanced settings about SIP protocol.
Items Descriptions
Domain name Mode If or not use domain name in the SIP URI.
Carry Port Information If or not carry Port information in the SIP URI.
Signal Port The local port of SIP protocol,default is 5060.
Second Dial Mode RFC2833 Payload(>=96): You can use the default setting.
Register Refresh Interval
(Second)
The interval between two normal Register messages. You can use
the default setting.
RTP Port
IP Phone will select idle port for RTP if you set “0”, otherwise IP
Phone will use the value you set. Generally speaking, set “0”.
Cancel Message Enable
When you set enable, an unregistered message will be sent
before registration, while you set disable, unregistered message
will not be sent before registration. You should set the option for
different Proxy.
Prack Enable The option for RFC 3262.
PING Enable
If this option enable, IP Phone will send SIP-PING to Server
periodically instead of sending hello packet. The send interval is
Keep-alive interval.
Keep-alive interval
(10-60s)
The interval that we send an empty packet to Proxy.
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