- Cisco Unified Border Element SIP Support
- SIP Core SIP Technology Enhancements
- Reporting End-of-Call Statistics in SIP BYE Message
- Configurable Hostname in Locally Generated SIP Headers
- SIP-to-SIP Basic Functionality for Session Border Controller
- SIP Session Timer Support
- SIP-to-SIP Supplementary Services for Session Border Controller
- Session Refresh with Reinvites
- Cisco UBE Out-of-dialog OPTIONS Ping
- SIP Out-of-Dialog OPTIONS Ping Group
- Configuring an Error Response Code upon an Out-of-Dialog OPTIONS Ping Failure
- Configurable SIP Error Codes
- Configuring SIP Error Message Pass Through
- SIP INFO Method for DTMF Tone Generation
- SIP Enhanced 180 Provisional Response Handling
- Configuring SIP 181 Call is Being Forwarded Message
- SIP UPDATE Message per RFC 3311
- Support for PAID PPID Privacy PCPID and PAURI Headers on the Cisco Unified Border Element
- Configurable Pass-Through of SIP INVITE Parameters
- Transparent Tunneling of QSIG and Q.931
- SIP Diversion Header Enhancements
- SIP History INFO
- SIP Ability to Send a SIP Registration Message on a Border Element
- Expires Timer Reset on Receiving or Sending SIP 183 Message
- Dynamic Refer Handling
- Configurable SIP Parameters via DHCP
- Multiple Registrars on SIP Trunks
- Handle Multiple Early Dialog Messages
- Monitoring of Phantom Packets
- V150.1 MER Support in SDP Passthrough Mode
SIP UPDATE Message per RFC
3311
The SIP UPDATE Message per RFC 3311 feature provides Session Description Protocol (SDP) support for Session Initiation Protocol (SIP)-to-SIP calls. The SIP Service Provider Interface (SPI) is modified to support the following media changes using the UPDATE message:
The Support for SIP UPDATE Message Per RFC 3311 feature is enabled by default on the Cisco Unified Border Element (UBE) and no configuration is required.
- Finding Feature Information
- Prerequisites for SIP UPDATE Message per RFC 3311
- Restrictions for SIP UPDATE Message per RFC 3311
- Information About SIP UPDATE Message per RFC 3311
- Feature Information for the SIP UPDATE Message per RFC 3311
Finding Feature Information
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.
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.
Prerequisites for SIP UPDATE Message per RFC 3311
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At least one offer or answer negotiation must be completed for Cisco UBE to handle the UPDATE message with SDP.
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An early dialog UPDATE message with SDP is processed only when both endpoints support the UPDATE message.
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For early dialog, both SIP endpoints must support PRACK and UPDATE method. Initial Offer-Answer must be completed with reliable provisional responses.
Cisco Unified Border Element
Cisco Unified Border Element (Enterprise)
Restrictions for SIP UPDATE Message per RFC 3311
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An UPDATE message with SDP is not supported for SIP-to-H323 calls.
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An UPDATE message with SDP with a fully qualified domain name (FQDN) is not supported.
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Contact information in the UPDATE message is not supported.
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A retransmitted UPDATE message with SDP is ignored by the SIP stack. No response is sent for retransmitted UPDATE messages.
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CUBE rejects UPDATE with SDP in early dialog when peer SIP leg does not support UPDATE.
Information About SIP UPDATE Message per RFC 3311
The SIP Update per RFC 3311 feature uses existing mid-call SDP processing logic to negotiate the Offer-Answer with UPDATE, so all media features supported in CUBE with Re-INVITE are supported with UPDATE.
The images below illustrate the call flows when one call-leg supports UPDATE and the other leg does not support UPDATE in early dialog and mid-call dialog.
Feature Information for the SIP UPDATE Message per RFC 3311
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.
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