3Com VCX V7122 Manual de usuario

3Com®VCX™ V7122 VoIP SIP

Gateway User Manual

Version 4.4

http://www.3com.com

Part Number 900-0255-01

Published June 2005

3Com VCX V7122 SIP VoIP Gateway User Manual

3Com Corporation, 350 Campus Drive, Marlborough MA 01752-3064

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If you are a United States government agency, then this documentation and the software described herein are provided to you

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All technical data and computer software are commercial in nature and developed solely at private expense. Software is

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3Com VCX V7122 SIP VoIP Gateway User Manual 3

CONTENTS

ABOUT THIS GUIDE 9

How to Use This Guide 9

Conventions 10

Related Documentation 10

Documentation Comments 10

CHAPTER 1: VCX V7122 SIP OVERVIEW 13

Available Configurations 14

SIP Overview 15

VCX V7122 VoIP SIP Supported Features 15

General Features 15

Hardware Features 15

PSTN-to-SIP Interworking 16

Supported SIP Features 17

CHAPTER 2: VCX V7122 SIP PHYSICAL DESCRIPTION 19

General 19

The VCX V7122 Chassis 20

Power Supply 20

The TP-1610 Board 20

Board Hot-Swap Support 21

TP-1610 Front Panel LED Indicators 22

Rear Transition Module 23

Optional CPU Board 24

CHAPTER 3: INSTALLING THE VCX V7122 25

Unpacking 25

Package Contents 26

Mounting the VCX V7122 26

Mounting the VCX V7122 on a Desktop 26

Installing the VCX V7122 in a 19-inch Rack 26

Cabling the VCX V7122 28

Connecting the E1/T1 Trunk Interfaces 30

Installing the Ethernet Connection 31

Connecting the Power Supply 31

CHAPTER 4: GETTING STARTED 35

3Com VCX V7122 SIP VoIP Gateway User Manual

Assigning the VCX V7122 IP Address 35

Assigning an IP Address Using HTTP 35

Assigning an IP Address Using BootP 36

Restoring Networking Parameters to Their Initial State 37

Configuring the VCX V7122 Basic Parameters 37

CHAPTER 5: WEB MANAGEMENT 41

Configuration Concepts 41

Overview of the Embedded Web Server 41

Computer Requirements 41

Password Control 42

Embedded Web Server Username and Password 42

Configuring the Web Interface via the ini File 42

Limiting the Embedded Web Server to Read-Only Mode 42

Disabling the Embedded Web Server 42

Accessing the Embedded Web Server 42

Using Internet Explorer to Access the Embedded Web Server 43

Getting Acquainted with the Web Interface 43

Main Menu Bar 44

Saving Changes 45

Entering Phone Numbers in Various Tables 45

Protocol Management 45

Protocol Definition Parameters 46

Advanced Parameters 47

Number Manipulation Tables 47

Configuring the Routing Tables 52

Configuring the Profile Definitions 58

Configuring the Trunk Group Table 62

Configuring the Trunk Group Settings 63

Advanced Configuration 65

Configuring the Network Settings 65

Configuring the Channel Settings 68

Configuring the Trunk Settings 69

Configuring the TDM Bus Settings 72

Restoring and Backing Up the Gateway Configuration 72

Regional Settings 73

Changing the VCX V7122 Username and Password 75

Status and Diagnostic 75

Gateway Statistics 75

Monitoring the VCX V7122 Trunks and Channels 77

Activating the Internal Syslog Viewer 79

System Information 80

Software Update Menu 81

Software Upgrade Wizard 81

3Com VCX V7122 SIP VoIP Gateway User Manual 5

Auxiliary Files 86

Updating the Software Upgrade Key 88

Save Configuration 88

Resetting the VCX V7122 89

CHAPTER 6: INI FILE CONFIGURATION OF THE VCX V7122 91

Secured ini File 91

Modifying an ini File 91

The ini File Content 92

The ini File Structure 92

The ini File Structure Rules 92

The ini File Example 93

Basic, Logging, Web, and RADIUS Parameters 93

SNMP Parameters 101

SIP Configuration Parameters 102

ISDN and CAS Interworking-Related Parameters 114

Number Manipulation and Routing Parameters 119

E1/T1 Configuration Parameters 127

Channel Parameters 132

Dynamic Jitter Buffer Operation 136

Configuration Files Parameters 137

CHAPTER 7: CONFIGURATION FILES 139

Configuring the Call Progress Tones 139

Format of the Call Progress Tones Section in the ini File 139

Prerecorded Tones (PRT) File 141

PRT File Format 141

Voice Prompts File 142

CAS Protocol Configuration Files 142

CHAPTER 8: GATEWAY CAPABILITIES DESCRIPTION 143

Proxy or Registrar Registration Example 143

Redirect Number and Calling Name (Display) 143

ISDN Overlap Dialing 144

Using ISDN NFAS 144

NFAS Interface ID 145

Working with DMS-100 Switches 146

Configuring the DTMF Transport Types 146

Configuring the Gateway’s Alternative Routing (based on Connectivity and QoS) 150

Alternative Routing Mechanism 150

Determining the Availability of Destination IP Addresses 150

PSTN Fallback as a Special Case of Alternative Routing 150

Relevant Parameters 151

Working with Supplementary Services 151

3Com VCX V7122 SIP VoIP Gateway User Manual

Call Hold and Retrieve Features 151

Call Transfer 151

TDM Tunneling 152

Implementation 152

Call Detail Report 154

Trunk to Trunk Routing Example 156

SIP Call Flow Example 157

SIP Authentication Example 160

CHAPTER 9: DIAGNOSTICS 163

VCX V7122 Self-Testing 163

Syslog Support 163

Syslog Servers 164

Operation 164

CHAPTER 10: BOOTP/DHCP SUPPORT 167

Startup Process 167

DHCP Support 169

BootP Support 169

Upgrading the VCX V7122 169

Vendor Specific Information Field 170

CHAPTER 11: SNMP-BASED MANAGEMENT 173

About SNMP 173

SNMP Message Standard 173

SNMP MIB Objects 174

SNMP Extensibility Feature 175

Carrier Grade Alarm System 175

Active Alarm Table 175

Alarm History 176

Cold Start Trap 176

Third-Party Performance Monitoring Measurements 176

Supported MIBs 177

SNMP Interface Details 180

SNMP Community Names 180

Trusted Managers 181

SNMP Ports 183

Multiple SNMP Trap Destinations 183

SNMP Manager Backward Compatibility 185

Element Management System 185

CHAPTER 12: SELECTED TECHNICAL SPECIFICATIONS 187

APPENDIX A: VCX V7122 SIP SOFTWARE KIT 191

3Com VCX V7122 SIP VoIP Gateway User Manual 7

APPENDIX B: THE BOOTP/TFTP CONFIGURATION UTILITY 193

When to Use the BootP/TFTP 193

An Overview of BootP 193

Key Features 193

Specifications 194

Installation 194

Loading the cmp File, Booting the Device 194

BootP/TFTP Application User Interface 195

Function Buttons on the Main Screen 195

Log Window 196

Setting the Preferences 197

BootP Preferences 198

TFTP Preferences 198

Configuring the BootP Clients 199

Adding Clients 199

Deleting Clients 200

Editing Client Parameters 200

Testing the Client 201

Setting Client Parameters 201

Using Command Line Switches 202

Managing Client Templates 203

APPENDIX C: RTP/RTCP PAYLOAD TYPES AND PORT ALLOCATION 205

Payload Types Defined in RFC 1890 205

Defined Payload Types 205

Default RTP/RTCP/T.38 Port Allocation 206

APPENDIX D: FAX AND MODEM TRANSPORT MODES 209

Configuring Fax Relay Mode 209

Configuring Fax/Modem ByPass Mode 209

Supporting V.34 Faxes 210

APPENDIX E: VCX V7122 CLOCK SETTINGS 211

APPENDIX F: CUSTOMIZING THE VCX V7122 WEB INTERFACE 213

Replacing the Main Corporate Logo 213

Replacing the Main Corporate Logo with an Image File 214

Replacing the Main Corporate Logo with a Text String 215

Replacing the Background Image File 215

Customizing the Product Name 216

Modifying ini File Parameters via the Web AdminPage 217

APPENDIX G: ACCESSORY PROGRAMS AND TOOLS 219

3Com VCX V7122 SIP VoIP Gateway User Manual

TrunkPack Downloadable Conversion Utility 219

Converting a CPT ini File to a Binary dat File 220

Creating a Loadable Voice Prompts File 221

Encoding/Decoding an ini File 223

Creating a Loadable Prerecorded Tones File 224

PSTN Trace Utility 226

Operation 226

APPENDIX H: SOFTWARE UPGRADE KEY 229

Loading the Software Upgrade Key 229

Loading the Software Upgrade Key Using the Embedded Web Server 229

Loading the Software Upgrade Key Using BootP/TFTP 231

Verifying That the Key was Successfully Loaded 231

Troubleshooting an Unsuccessful Loading of a Key 231

APPENDIX I: RELEASE REASON MAPPING 233

APPENDIX J: RADIUS BILLING AND CALLING CARD APPLICATION 237

Benefits 237

Features 237

Supported Architecture 238

Implementation 239

Basic Calling Card IVR Scenario 239

Call Flow Description 240

Operation and Configuration 241

Configuration Parameters 242

Supported RADIUS Attributes 243

RADIUS Server Messages 246

Authentication 246

Authorization 247

Accounting 247

Voice XML Interpreter 247

Features 248

Supported Elements and Attributes 249

Provided Calling Card System 255

Voice Prompts 255

VXML Flow Chart 257

VXML Script Example 261

3Com VCX V7122 SIP VoIP Gateway User Manual 9

ABOUT THIS GUIDE

This User Manual describes the 3Com®VCX™V7122 Gateway.

This product is supported by software version 4.4, and enables you to send voice, fax, and

data over the same IP network.

Information contained in this document is believed to be accurate and reliable at the time of

printing. However, because of on-going product improvements and revisions, 3Com cannot

guarantee the accuracy of printed material after the Date Published nor can it accept

responsibility for errors or omissions. Updates to this document and other documents can be

viewed by registered Technical Support customers. See Appendix K: Obtaining Support for

Your 3Com Products for details on how to register your product and get support from 3Com.

How to Use This Guide

This book covers these topics:

Chapter 1: VCX V7122 SIP Overview

Chapter 2: VCX V7122 SIP Physical Description

Chapter 3: Installing the VCX V7122

Chapter 4: Getting Started

Chapter 5: Web Management

Chapter 6: ini File Configuration of the VCX V7122

Chapter 7: Configuration Files

Chapter 8: Gateway Capabilities Description

Chapter 9: Diagnostics

Chapter 10: BootP/DHCP Support

Chapter 11: SNMP-Based Management

Chapter 12: Selected Technical Specifications

Appendix A: VCX V7122 SIP Software Kit

Appendix B: The BootP/TFTP Configuration Utility

Appendix C: RTP/RTCP Payload Types and Port Allocation

Appendix D: Fax and Modem Transport Modes

3Com VCX V7122 SIP VoIP Gateway User Manual

Appendix E: VCX V7122 Clock Settings

Appendix F: Customizing the VCX V7122 Web Interface

Appendix G: Accessory Programs and Tools

Appendix H: Software Upgrade Key

Appendix I: Release Reason Mapping

Appendix J: RADIUS Billing and Calling Card Application

Appendix K: Obtaining Support for Your 3Com Products

Conventions

Table 1 lists conventions that are used throughout this guide.

Table 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or instructions.

Caution Information that alerts you to potential loss of data or potential

damage to an application, device, system, or network.

Warning Information that alerts you to potential personal injury or death.

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