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1Sip Trunk Group - Signaling - Timers
 

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The following fields are displayed:

Caption
0Table
1Sip Trunk Group - Signaling - Timers parameters
 

Parameter

Description

T1

This is the SIP protocol retransmission timer T1 (in milliseconds). T1 is an estimate of the round-trip time (RTT). The value ranges from 1 to 10000 and the default value is 500.

T2

This is the SIP protocol timer T2 (in milliseconds), and represents the maximum retransmit interval for non-INVITE requests and INVITE responses. The value ranges from 1 to 65535 and the default value is 4000.

Tcp Retransmit Timer

The retransmit timer (in seconds) for SIP request over TCP. The value ranges from 0 to 15 and the default value is 6.

Sctp Retransmit Timer

The retransmit timer (in seconds) for SIP request over SCTP. The value ranges from 0 to 15 and the default value is 6.

Session Keepalive

The SIP protocol session keep-alive timer (in seconds). The value ranges from 0 to 65535 and the default value is 1800.

Non Nat Keep Alive Timer

Use this parameter to specify the keep-alive interval (in seconds) for a non-Nat'd device. The value ranges from 0 to 65535 and the default value is 60.

Session Min SE

Minimum expiration value (in seconds) accepted from a Session-Expires header. The value ranges from 0 to 65535 and the default value is 90.

Note

When Session Min SE value is less than 90 seconds or when it equals 65535, SBC does not send an INVITE upon receiving "422 Session Interval Too Small" error message.

Session Termination Delta Time

The time (in seconds) before session expiration at which the SBC sends a BYE if no session refresh request is received. This only applies when acting as the session keep-alive responder (i.e. not refresher) for a call. The value ranges from 0 to 65535 and the default value is 0.
Ocs Dialog Timer This relay control block timer is restarted for each relay request received. If no request is received for the configured period, the dialog is deleted. When the timer is set to “0”, sessionKeepalive flag is disabled. The value ranges from 0 to 10080 and the default value is 1440.

Make the required changes and click Save at the right hand bottom of the panel to save the changes made.

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