Handle Multiple Early Dialog Messages
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Handle Multiple Early Dialog MessagesLast Updated: September 23, 2012
In a VoIP/SIP network, services such as call forward trigger multiple early dialog creation on Cisco UBE. SIP forking proxy will fork the SIP invite request to multiple endpoints and send out multiple forked invite responses to Cisco UBE. The Handle Multiple Early Dialog Messages feature enables Cisco UBE to respond to the forked invite responses. Finding Feature InformationYour 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. Information About Handle Early Dialog Messages
Multiple Early Dialog SupportThe Handle Multiple Early Dialog Messages feature is enabled on Cisco UBE by default. When a service such as call forward triggers multiple early dialog creation on Cisco UBE, the SIP forking proxy will fork the SIP invite request to multiple endpoints and multiple invite responses are sent out to Cisco UBE. Cisco UBE handles the forked invite responses on the outbound call-leg and updates the peer (inbound) call-leg with an early dialog UPDATE message. This message renegotiates the media information, and Cisco UBE maps the appropriate dialog and responds to the forked responses. Verifying the Handle Multiple Early Dialog Messages FeaturePerform this task to verify the multiple early dialog messages support on Cisco UBE. The show commands can be entered in any order. DETAILED STEPS Additional ReferencesTechnical Assistance
Feature Information for Handle Multiple Early Dialog MessagesThe 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.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R) Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental. © 2012 Cisco Systems, Inc. All rights reserved.
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