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Use this object to define retransmission and session keep-alive timer parameters
To View and Edit Timers
On the SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > Sip Trunk Group > Signaling > Timers. The Timers window is displayed.
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Parameter | Description | ||
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| 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. | ||
| 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. | ||
| The retransmit timer (in seconds) for SIP request over TCP. The value ranges from 0 to 15 and the default value is 6. | ||
| The retransmit timer (in seconds) for SIP request over SCTP. The value ranges from 0 to 15 and the default value is 6. | ||
| The SIP protocol session keep-alive timer (in seconds). The value ranges from 0 to 65535 and the default value is 1800. | ||
| 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. | ||
| Minimum expiration value (in seconds) accepted from a Session-Expires header. The value ranges from 0 to 65535 and the default value is 90.
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| 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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