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Session Refresh with Reinvites
Configuring support for session refresh with reinvites expands the ability of the Cisco Unified Border Element to receive a REINVITE message that contains either a session refresh parameter or a change in media via a new SDP and ensure the session does not time out. The midcall-signaling command distinguishes between the way a Cisco Unified Communications Express and Cisco Unified Border Element releases signaling messages. Most SIP-to-SIP video and SIP-to-SIP ReInvite-based supplementary services features require the Configuring Session Refresh with Reinvites feature to be configured.
Cisco IOS Release 12.4(15)XZ and Earlier Releases
Session refresh support via OPTIONS method. For configuration information, see the "Enabling In-Dialog OPTIONS to Monitor Active SIP Sessions" section.
Cisco IOS Release 12.4(15)XZ and Later Releases
Cisco Unified BE transparently passes other session refresh messages and parameters so that UAs and proxies can establish keepalives on a call.
- The allow-connections sip to sip command must be configured before you configure the Session refresh with Reinvites feature. For more information and configuration steps see the "Configuring SIP-to-SIP Connections in a Cisco Unified Border Element" section.
Cisco Unified Border Element
- Cisco IOS Release 12.4(20)T or a later release must be installed and running on your Cisco Unified Border Element.
Cisco Unified Border Element (Enterprise)
- Cisco IOS XE Release 2.5 or a later release must be installed and running on your Cisco ASR 1000 Series Router.
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
Step 1 |
enable
Example: Router> enable |
Enables privileged EXEC mode.
|
Step 2 |
configure
terminal
Example: Router# configure terminal |
Enters global configuration mode. |
Step 3 |
voice
service
voip
Example: Router(config)# voice service voip |
Enters VoIP voice-service configuration mode. |
Step 4 |
sip
Example: Router(conf-voi-serv)# sip |
Enters SIP configuration mode. |
Step 5 |
midcall-signaling
passthru
Example: Router(conf-serv-sip)# midcall-signaling passthru |
Passes SIP messages from one IP leg to another IP leg. |
Step 6 |
exit
Example: Router(conf-serv-sip)# exit |
Exits the current mode. |
Step 7 |
end
Example: Router(conf-serv-sip) end |
Returns to privileged EXEC mode. |
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see 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 document.
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 Information for Session Refresh with Reinvites
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 for the ASR
| Table 1 | Feature Information for Session Refresh with Reinvites |
|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
Session Refresh with Reinvites |
12.4(20)T |
Expands the ability of the Cisco Unified BE to control the session refresh parameters and ensure the session does not time out. midcall-signaling |
Feature History Table for the ISR
| Table 2 | Feature Information for Session Refresh with Reinvites |
|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
Session Refresh with Reinvites |
Cisco IOS XE Release 2.5 |
Expands the ability of the Cisco Unified BE to control the session refresh parameters and ensure the session does not time out. midcall-signaling |
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