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RTP Port – is the IP port number used for Real Time Protocol communication. RTP is the protocol used for sending/
receiving audio over the network. This entry should be an even number to conform to industry standards.
Keep Alive Timeout (secs) – Interval in seconds (20 – 3600) that SIP registration is sent to a SIP server
(default 3600 seconds).
Options Timer (secs) – Interval in seconds (0 – 300) that a SIP Options message is sent to the SIP server.
(default 0 disables the option)
Idle Timeout (secs) – is configurable from 0 – 60. If audio packets are no longer received after the set number
of seconds the device will terminate the call. (default 0 disables the timeout.)
Max Call Timer (secs) – is configurable from 0 – 600. The device will terminate the call when the timer reaches
the number of seconds configured. (default 0 disables the timeout) This option is typically used when calls are not
hung up properly.
Night Ring – when checked, this enables this SIP phone number to be used as a Night Ring station. The V-9972 will
not answer the inbound call, but will play a ringback tone to signal that a call is being received. This option is available
with the L9972-1 license.
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