This documentation has been moved
Cisco IOS H.323 Feature Roadmap
Downloads: This chapterpdf (PDF - 139.0KB) The complete bookPDF (PDF - 5.47MB) | Feedback

Cisco IOS H.323 Feature Roadmap

Table Of Contents

Cisco IOS H.323 Feature Roadmap

Platforms and Cisco IOS Software Images

Cisco IOS H.323 Feature List


Cisco IOS H.323 Feature Roadmap


This guide collects together in one place information about Cisco IOS voice features having to do with the H.323 standard for sending and receiving audio, video, and data on an IP-based internetwork.

This first chapter of the guide is a feature roadmap. It describes how to access Cisco Feature Navigator and lists H.323 features by Cisco IOS release.


Note For information about the full set of Cisco IOS voice features, see the entire Cisco IOS Voice Configuration Library—including library preface, glossary, and other documents—at http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_voice_configuration_library_glossary/
vcl.htm


Platforms and Cisco IOS Software Images

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.

Cisco IOS H.323 Feature List

Table 1 lists H.323 features by Cisco IOS release. Features that are introduced in a particular release are available in that and subsequent releases.

Table 1 H.323 Features by Cisco IOS Release 

Release
Features Introduced 1
Feature Description
Feature Documentation
12.4(4)XC

H.323 VoIP Call Preservation Enhancements for WAN Link Failures

Sustains connectivity for H.323 topologies where signaling is handled by an entity that is different from the other endpoint,

"Configuring H.323 VoIP Call Preservation Enhancements for WAN Link Failures" section on page 93 of this guide

12.4(4)T

No Retry on User Busy in an H.323 Gateway

Changes the default behavior of the gateway to not retry alternate endpoints when the release complete reason is user busy.

"Configuring No Retry on User Busy in an H.323 Gateway" section on page 74 of this guide

12.3(11)T

Overlap Signaling on H.323 Terminating Gateways

Introduces overlap signaling.

"Configuring Overlap Signaling on H.323 Terminating Gateways" section on page 73 of this guide

12.3(7)T

Signal ISDN B-Channel ID to Enable Application Control of Voice Gateway Trunks

Enables the H.323 gateway to access B-channel information for all H.323 calls.

"Configuring Signal ISDN B-Channel ID to Enable Application Control of Voice Gateway Trunks" section on page 90 of this guide

12.3(1)

Gatekeeper Enhancements for Managed Voice Services

Adds call control based on available bandwidth and endpoint resources, allowing call rerouting to achieve higher call-completion rates and ensure QoS.

"Configuring H.323 Gatekeepers and Proxies" chapter of this guide

 

Gateway Codec Order Preservation and Shutdown Control

Adds a way to shutdown and restart SIP and H.323 gateways.

"Configuring Multiple Codecs" section on page 57 of this guide

12.2(15)T

Gatekeeper Management Statistics

Provides statistics that can be used to monitor a network and troubleshoot network problems.

"Gatekeeper-Management Statistics" section on page 256 section of this guide

H.323v4 Gateway Zone Prefix Registration Enhancements

Reduces configuration complexity on the gatekeeper by enabling a gateway to report supported E.164 prefixes to the gatekeeper at registration.

"Configuring H.323 Version 4 Zone Prefix Registration" section on page 83 section of this guide

Tokenless Call Authorization

Creates a trusted access list to handle networks that have not implemented token-security features.

"Configuring Tokenless Call Authorization" section on page 163 section of this guide

12.2(13)T

Multiservice IP-to-IP Gateway with Media Flow-Around

Adds media flow-around capability to the multiservice IP-to-IP gateway.

"Configuring H.323 Gateways" section on page 25 section of this guide

12.2(11)T

Basic Service Relationships (H.225 Annex-G)

Implements the minimal set of Annex G features needed to allow Cisco border elements to interoperate with other border elements.

"Configuring Annex G" section on page 61 of this guide

Call Status Tracking Optimization

Reduces unnecessary messages between gatekeeper and the gateways, reducing network congestion and CPU over-utilization.

"Configuring the IRR Timer and Disable IRQ Requests" section on page 210 of this guide

Configuring a Gatekeeper to Provide Nonavailability Information for Terminating Endpoints

Describes how to configure a gatekeeper to provide nonavailability information for terminating endpoints.

"Configuring Nonavailability Information for Terminating Endpoints" section on page 207 of this guide

Gatekeeper Alias Registration and Address Resolution Enhancements

Allows configuration of multiple prefixes for a local zone and registration of an endpoint belonging to multiple zone prefixes.

"Configuring Gatekeeper Alias Registration and Address Resolution" section on page 134 of this guide

Gatekeeper Endpoint Control Enhancements

Enable finer-grained control of gatekeeper registrations, and enable more capable and robust back-end server applications.

"Configuring Endpoints" section on page 199 of this guide

Gatekeeper-to-Gatekeeper Authentication

Provides additional security for H.323 networks by introducing the ability to validate intradomain and interdomain gatekeeper-to-gatekeeper LRQ messages on a per-hop basis. When used in conjunction with per-call security using IZCT, protects network resources from attackers and prevents security holes.

"Configuring Security and Authentication" section on page 153 of this guide

12.2(11)T

H.323 Dual Tone Multifrequency Relay Using Named Telephone Events

Enhances interoperability of Cisco gateways with equipment from other vendors by implementing H245v7 extensions to support RFC2833 in-band audio telephone events and in-band audio tones as well as support for asymmetrical RTP dynamic payload types.

"Configuring DTMF Relay" section on page 51 of this guide

VoIP Gatekeeper Trunk and Carrier Based Routing Enhancements

Allows service providers to route traffic based on trunk and carrier rule sets.

VoIP Gatekeeper Trunk and Carrier Based Routing Enhancements

VoIP Gateway Trunk and Carrier Based Routing Enhancements

Addresses functional enhancements needed to improve routing on Cisco voice-over-packet platforms.

VoIP Gateway Trunk and Carrier Based Routing Enhancements

VoIP Outgoing Trunk Group ID and Carrier ID for Gateways and Gatekeepers

Provides alternate endpoints by adding trunk group labels (outgoing trunk group identification) to endpoints on H.323 VoIP networks.

"Configuring Border Elements" section on page 198 of this guide

12.2(8)T

Gatekeeper Transaction Message Protocol Interface Resiliency Enhancement

Provides enhanced call-routing and address-translation services.

"Configuring Gatekeeper Interaction with External Applications" section on page 169 of this guide

12.2(4)T

Cisco H.323 Scalability and Interoperability Enhancements for Gatekeepers

Upgrades the gatekeeper to comply with H.323 Version 3.

"Configuring H.323 Gateways" section on page 25 of this guide

Cisco H.323 Scalability and Interoperability Enhancements for Gateways

Upgrades the gateway to comply with H.323 Version 3.

"Configuring H.323 Gateways" section on page 25 chapter of this guide

H.323 Version 2 Enhancements

Upgrades Cisco IOS software to comply with the mandatory requirements and several optional features of the version 2 specification. Enhances the existing VoIP gateway and multimedia conference manager gatekeeper and proxy.

"Configuring Generic Transparency Descriptor for GKTMP Using SS7 Interconnect for Voice Gateways Version 2.0" section on page 77 of this guide

Inter-Domain Gatekeeper Security Enhancement

Provides a secure mechanism for authenticating and authorizing H.323 calls from other administrative domains.

"Configuring E.164 Interzone Routing" section on page 165 of this guide

Sequential Location Request Enhancement

Provides a potentially faster gatekeeper LRQ response when an LRJ response is received while the gatekeeper is sending sequential LRQs.

"Configuring Gatekeeper Zones" section on page 125 of this guide

12.2(2)T

Call Admission Control for H.323 VoIP Gateways

Provides call-admission control for voice gateways.

"Configuring Call Admission Control" section on page 90 of this guide

H.323 Call Redirection Enhancements

Indicates the nature of a call redirection and provides a nonstandard method for using the message to effect call transfer.

"H.323 Call Redirection" section on page 248 of this guide

High Performance Gatekeeper

Facilitates carrier-class reliability, security, and performance.

"Configuring H.323 Gatekeepers and Proxies" section on page 121 of this guide

NAT Support of H.323 v2 RAS

Allows embedded IP addresses to be inspected for potential address translation.

"Configuring an H.323 Proxy Server" section on page 178 of this guide

12.1(1)T

Gatekeeper Ecosystem Interoperability

Allows a gateway to move between gatekeepers during GRQ and RRQ messages.

"Ecosystem Gatekeeper Interoperability" section on page 254 of this guide

Gateway-to-Gatekeeper Billing Redundancy

Provides redundant billing information to an alternate gatekeeper if the primary gatekeeper becomes unavailable.

"Gateway-to-Gatekeeper Billing Redundancy" section on page 254 of this guide

1 Features that are introduced in a particular release are available in that and subsequent releases.