Cisco Cisco IOS Software Release 12.4(15)T

© 2007 Cisco Systems, Inc. All rights reserved.

The SIP REFER outside the scope of a dialog created with a SIP INVITE feature allows remote 
applications to establish calls by sending a REFER message to a SIP gateway without an initial INVITE.

Configuration information is included in the SIP Features for Unified CME 4.1, Unified SRST 4.1, and 
Voice Gateways, at the following URL:

Command reference information is included in the Cisco IOS Voice Command Reference, at the 
following URL:

An alphabetical list of all Cisco IOS Release 12.4T commands is in the Cisco IOS Master Commands 
List, Release 12.4T, at the following URL:

Alphabetized lists of all new, modified, removed, and replaced commands for each Cisco IOS 
Release 12.4T release are in the Cisco IOS New, Modified, Removed, and Replaced Commands, 
Release 12.4T, document at the following URL:

CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and 
Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, 
the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, 
Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, 
IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networkers, 
Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet 
Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.