Matrix ETERNITY NE System Manual 195
• RTP DiffServe/ToS. Valid range is 00 to 63. Default: 46.
• If the IP phone is connected behind a NAT router, configure NAT Keep Alive.
• Select the Enable NAT Keep Alive check box 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.
• 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.
• To debug using Syslog Client supported by the phone, configure the Debug parameters:
•Set Enable Debug? to Yes. Default: No.
When the Debug parameter is enabled, the phone will send the debug messages to the Syslog Server
IP address. Debug report can be viewed on the Syslog Server or any other application which can
capture the Syslog messages/debug sent by the phone.
• Enter the IP Address of the remote Syslog Server as Syslog Server Address.
• Enter the Server Port, i.e. the address of the Listening Port of the Syslog Server from 1025-65535 or
514. Default: 514.
Syslog uses the UDP as transport protocol and listens on the port 514 (the default listening port).
• Select Debug Levels from these options, by selecting the respective check box:
•SIP
• System
• Hardware
•Call