Table Of Contents

About This Guide

Guide Revision History

Objectives

Audience

Document Organization

Obtaining Documentation, Obtaining Support, and Security Guidelines

About This Guide

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This guide provides information about the features and functions of the Cisco Voice Switch Service Module (VXSM) Release 5.4.

Guide Revision History

This guide provides configuration procedures for Cisco VXSM features.

VXSM Release	Part Number	Publication Date
5.2	OL-7142-01	September 30, 2005
5.2	OL-7142-02	January 24, 2006
5.3	OL-10284-01	May 5, 2006
5.3.10	OL-10284-02	August 31, 2006
5.4	OL-10896-01	March 9, 2007

Description of Changes

Description of Changes in Rel. 5.2

•This is the first revision of this document. However, this document is based upon the earlier VXSM document entitled Cisco Voice Switch Services (VXSM) Configuration Guide and Command Reference for MGX Switches and Media Gateways, Release 5.

Description of Changes in Rel. 5.2.10

•This document includes all configuration procedures in the Release 5 document, plus new procedures for the features added to VXSM Release 5 to produce VXSM Release 5.2. Briefly, these added features are:

–Packet cable compliance

–E911 Emergency service

–Bearer and IP security

–T.38 Fax Relay

–New VXSM-6T3 card set

–Automatic detection of modem, fax, and TTY traffic with upspeed to pulse code modulation (PCM)

Description of Changes in Rel. 5.3

•Chapter 7, Troubleshooting, is updated to include the Bearer Trace feature.

Description of Changes in Rel. 5.3.10

•This revision contains descriptions and configuration procedures for the following additional features

–Ability of a VXSM card to perform as an SS7 Signaling Gateway in addition to its Media Gateway functions.

–Voice Quality Monitoring

–Ability of a VXSM card to act as a number of virtual media gateways

–Call controlled T.38 Fax Relay

–H.248 Congestion and Overload Handling

–Expansion of the backhauling feature to include the following protocols

DPNSS = Digital Private Network Signaling System
DASS = Digital Access Signaling System
SCTP = Streaming Control Transmission Protocol
RUDP = Reliable UDP
IUA = ISDN Q921-User Adaptation
DUA = DPNSS/DASS User Adaptation Layer Protocol

Description of Changes in Rel. 5.3.10

•The procedure entitled "Setting Up XGCP Media Gateway Controllers and Media Gateway Controller Groups" in Chapter 3 has been improved.

Description of Changes in Rel. 5.4

•VXSM supports H.248 Transparent IP-IP connections. When an H.248 IP-IP connections is created with the same codec and packetization period at each end of the bearer leg, the connection can be in "transparent" mode depending on whether transparent IP-IP is enabled or not in the card. In transparent mode, transcoding of the bearer stream is not done. This results in bit transparency and better bearer latency. Transparent mode is enabled or disabled for the whole VXSM card with the cnfdspparam command.

•VXSM supports the detection and handling of V.110 traffic used for modem and fax devices on mobile networks. This feature is used in conjunction with the AAL2 Trunking function.
Upon detection of a V.110 bit pattern, VXSM provides a Clear Channel circuit for the duration of the V.110 (data) session.

The V.110 feature adds the following commands:

cnfeventmapping -v110 Configure V.110 events mapping

dspeventmapping -v110 Display V.110 events mapping

addccdprof Add clear channel data profile

cnfccdprof Configure clear channel data profile

delccdprof Delete clear channel data profile

dspccdprof Display clear channel data profile

dspccdprofs Display clear channel data profiles

•For H.248 switched applications, a VXSM card has the capability of being partitioned into a number of Virtual Media Gateways (VMGs) where each VMG is a logical entity residing within a physical VXSM card. This feature permits each virtual gateway to be assigned its own Domain Name.
The Virtual Gateway Domain Names feature modifies the following commands:

addh248assoc Add H.248 association
cnfh248mg Configure H.248 media gateway

Objectives

The Cisco VXSM Configuration Guide describes the use and configuration of VXSM in switching and nonswitching (trunking) applications.

Audience

The Cisco VXSM Configuration Guide is intended for experienced Cisco MGX users who are involved with the installation and configuration of the Cisco-based media gateway applications.

Document Organization

This installation guide has the following chapters:

•Chapter 1—Cisco Voice Switch Service Module Introduction

•Chapter 2—Cisco Voice Switch Service Module Description

•Chapter 3—Configuring VoIP Switching Applications

•Chapter 4—Configuring Switches for AAL2 Trunking Applications

•Chapter 5—Configuring VXSM Features

•Chapter 6—VXSM as an SS7 Signaling Gateway

•Chapter 7—Loading and Upgrading VXSM Code Images

•Chapter 8—VXSM Troubleshooting

•Appendix A—Media Gateway Clocking

•Index

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html