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Contents
This feature enables support for resetting the Expires timer when receiving or sending SIP 183 messages on Cisco Unified Communications Manager Express (Cisco Unified CME), a Cisco IOS voice gateway, or a Cisco Unified Border Element (Cisco UBE). When the terminating device lacks answer supervision or does not send the required SIP 200 OK message within the timer expiry, you can enable this feature to send periodic SIP 183 messages to reset the Expires timer and preserve the call until final response. This feature can be enabled globally or on a specific dial peer. Additionally, you can configure this feature based on the presence or absence of Session Description Protocol (SDP).
For details about enabling this feature, see the reset timer expires and voice-class sip reset timer expires commands in the Cisco IOS Voice Command Reference.
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Before configuring support for Expires timer reset for SIP 183 on Cisco IOS SIP time-division multiplexing (TDM) gateways, Cisco UBEs, or Cisco Unified CME, verify the SIP configuration within the VoIP network for the appropriate originating and terminating gateways as described in the Cisco IOS SIP Configuration Guide.
To configure the Support for Expires Timer Reset on Receiving or Sending SIP 183 Message feature, complete the tasks in this section. You can enable this feature globally, using the reset timer expires command in voice service SIP configuration mode, or on a specific dial-peer using the voice-class sip reset timer expires command in dial peer voice configuration mode.
Perform this task to enable resetting of the Expires timer at the global level in SIP configuration (conf-serv-sip) mode.
1.
enable
2.
configure
terminal
3.
voice
service
voip
4.
sip
5.
reset
timer
expires
183
6.
exit
Perform this task to enable resetting of the Expires timer at the dial-peer level in dial peer voice configuration (config-dial-peer) mode.
1.
enable
2.
configure
terminal
3.
dial-peer
voice
tag
voip
4.
voice-class
sip
reset
timer
expires
183
5.
exit
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature History Table entry for the Cisco Unified Border Element.
|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
Support for Expires Timer Reset on Receiving or Sending SIP 183 Message |
15.0(1)XA 15.1(1)T |
This feature enables support for resetting the Expires timer upon receipt of SIP 183 messages on Cisco Unified Communications Manager Express (Cisco Unified CME), a Cisco IOS voice gateway, or a Cisco Unified Border Element (Cisco UBE). The following commands were introduced or modified: reset timer expiresand voice-class sip reset timer expires. |
Feature History Table entry for the Cisco Unified Border Element (Enterprise) .
|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
Support for Expires Timer Reset on Receiving or Sending SIP 183 Message |
Cisco IOS XE Release 3.1S |
This feature enables support for resetting the Expires timer upon receipt of SIP 183 messages on Cisco Unified Communications Manager Express (Cisco Unified CME), a Cisco IOS voice gateway, or a Cisco Unified Border Element (Cisco UBE). The following commands were introduced or modified: reset timer expiresand voice-class sip reset timer expires. |