Matrix PRASAR UCS - Page 200

Matrix PRASAR UCS System Manual 191
• RTP Listening Port: This is the port on which the phone listens for RTP messages over UDP. This port
is also used as the source port for sending RTP packets. This port is also used as the source port for
sending RTP packets to the remote peer. The valid range for this port is 1025-65278. Default: 8000.
Quality of Service
• Set the SIP Quality of Service (QoS) for SIP signaling as:
• SIP DiffServe/ToS. Valid range is 00 to 63. Default: 26.
OR
• RTP DiffServe/ToS. Valid range is 00 to 63. Default: 46.
NAT Keep Alive
• If the SPARSH VP330 is connected behind a NAT router, configure NAT Keep Alive.
• Select the check box Enable NAT Keep Alive to send Keep Alive messages periodically to refresh the
binding in the NAT router. Default: Disabled.
• Define as Interval (sec), the time period, from 001 to 999 seconds, after which the phone should send
Keep Alive message. Default: 120 seconds.
The time period you define should be less than the binding timer of the router.
Timers
• Set the following Timers to the desired value, where required:
• SIP INVITE Timer (sec): This is the time in seconds that the phone waits for a response from the
called party after sending INVITE message. This timer starts after sending INVITE message to the
called party and stops on receipt of the provisional response or the final response or when the user
disconnects the call. On expiry of the timer, the phone terminates the call process and gives an error
tone to the user. The range of the SIP INVITE TIMER is 10-180 seconds. Default: 30 seconds.
• SIP Provisional Timer (sec): This is the time in seconds that the phone waits for final response after
receiving the provisional response from the called party. This timer starts on the receipt of the
provisional response from the called party and stops on receipt of the final response from the called
party or when the user disconnects the call. On expiry of the timer, the IP phone terminates the call
process and gives error tone to the user. The range of SIP Provisional Timer is 10-180 seconds.
Default: 60 seconds.
• General Request Timer (sec): This is the time in seconds for which the phone waits for response of a
transaction request. This timer starts on initiating a transaction. This timer stops on receipt of a
response for the request. On expiry of the timer, the phone clears the transaction. This timer is used for
Registration request, etc. The range of the General Request Timer is 10-60 seconds. Default: 20
seconds.
• Click Submit to save settings.
• If you have completed the configuration of the SPARSH VP330 Phone Settings at Location 1, follow the
same steps as described above to configure the SPARSH VP330 Phone at Location 2 and Location 3.
When you change any of the parameters listed below in the SIP Extension at Location 1, 2, 3, the phone
will go in Auto Configuration mode automatically, if registered: