Table Of Contents

SIP History INFO Header Support

Prerequisites

Configuring SIP History INFO

SIP History INFO Header Support

The SIP History-info Header Support feature provides support for the history-info header in SIP INVITE messages only. The SIP gateway generates history information in the INVITE message for all forwarded and transferred calls. The history-info header records the call or dialog history. The receiving application uses the history-info header information to determine how and why the call has reached it.

Additional information on the SIP History INFO feature is available in the SIP: History-info Header Support section of the "Cisco IOS SIP Configuration Guide, Release 15.1"

Prerequisites

Cisco Unified Border Element

•Cisco IOS Release 12.4(22)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 3.1or a later release must be installed and running on your Cisco ASR 1000 Series Router.

Configuring SIP History INFO

To configure the SIP History INFO feature, see the Configuring SIP History-info Header Support section of the "Cisco IOS SIP Configuration Guide, Release 15.1"