Cisco Unified Border Element Configuration Guide
Cisco Unified Border Element SIP Support
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Cisco Unified Border Element SIP Support

Table Of Contents

Cisco Unified Border Element SIP Support

Finding Feature Information

Cisco Unified Border Element SIP Support Features

Cisco Unified Border Element SIP Support

Revised: October 20, 2010
First Published: November 25, 2009
Last Updated: October 20, 2010

This Cisco Unified Border Element is a special Cisco IOS software image that provides a network-to-network interface point for billing, security, call admission control, quality of service, and signaling interworking. This chapter describes basic gateway functionality, software images, topology, and summarizes supported features.

Activation Cisco Product Authorization Key (PAK)—A Product Authorization Key (PAK) is required to configure some of the features described in this guide. Before you start the configuration process, please register your products and activate your PAK at the following URL

Finding Feature Information

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 "Cisco Unified Border Element Features Roadmap" section on page 3.

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. To access Cisco Feature Navigator, go to An account on is not required.

Cisco Unified Border Element SIP Support Features

This chapter contains the following configuration topics:

Cisco UBE Prerequisites and Restrictions

Prerequisites for Cisco Unified Border Element

Restrictions for Cisco Unified Border Element

Basic SIP Set-up

SIP—Core SIP Technology Enhancements

SIP Parameter Settings

SIP—Configurable Hostname in Locally Generated SIP Headers

SIP Parameter Modification

SIP—Session Timer Support

SIP Protocol Handling and Supplementary Services

SIP-to-SIP Basic Functionality for Session Border Controller

SIP-to-SIP Extended Feature Functionality for Session Border Controllers

SIP-to-SIP Supplementary Services for Session Border Controller

Cisco UBE Support for generating Out-of-dialog SIP OPTIONS Ping messages to monitor SIP Servers

SIP—INFO Method for DTMF Tone Generation

SIP—Enhanced 180 Provisional Response Handling

Configuring Support for SIP 181 Call is Being Forwarded Message

Support for Expires Timer Reset on Receiving or Sending SIP 183 Message

Support for PAID, PPID, Privacy, PCPID, and PAURI Headers on the Cisco UBE

Configuring Selective Filtering of Outgoing Provisional Response on the Cisco UBE

Cisco Unified Border Element Support for Configurable Pass-through of SIP INVITE Parameters

Transparent Tunneling of QSIG and Q.931 over SIP TDM Gateway and SIP-SIP Cisco Unified Border Element

SIP Diversion Header Enhancements

SIP Registration & Authentication

SIP—Ability to Send a SIP Registration Message on a Border Element

Support for Multiple Registrars on SIP Trunks

SIP Normalization

SIP Parameter Modification

Additional References


Feature Information for Cisco UBE SIP Support,