3com VCX V7111 User manual

3Com® VCX™ V7111 VoIP

Gateway User Guide

System Release 5.0

http://www.3com.com

Part Number 900-0486-01 AA

Published December 2007

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VCX V7111 VoIP Gateway User Guide

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

or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on

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may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the

product as a separate document, in the hardcopy documentation, or on the removable media in a directory file named LICENSE.TXT or

!LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

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

the following:

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

“Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a)

and as such is provided with only such rights as are provided in 3Coms standard commercial license for the Software. Technical data is

provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable.

You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or

delivered to you in conjunction with, this guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other

countries.

3Com, the 3Com logo, and VCX are registered trademarks of 3Com Corporation.

AC logo, Ardito, 3Com, 3Com logo, IPmedia, Mediant, V7111, V7111-MLQ, NetCoder, Stretto, TrunkPack, VoicePacketizer and VoIPerfect,

are trademarks or registered trademarks of 3Com Limited. All other products or trademarks are property of their respective owners.

All other company and product names may be trademarks of the respective companies with which they are associated.

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VCX V7111 VoIP Gateway User Guide

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C

ONTENTS

ABOUT THIS GUIDE 13

How to Use This Guide 13

Conventions 14

Related Documentation 15

Documentation Comments 15

Notices 15

WEEE EU Directive 15

Abbreviations and Terminology 15

CHAPTER 1: OVERVIEW 17

Gateway Description 17

SIP Overview 19

V7111 Features 19

General Features 19

V7111 1x PORT Hardware Features 20

V7111 24 PORT Hardware Features 20

SIP Features 20

CHAPTER 2: V7111 GATEWAY PHYSICAL DESCRIPTION 25

V7111 1x PORT Physical Description 25

V7111 1x PORT Front Panel 25

V7111 1x PORT Rear Panel 26

V7111 24 PORT Physical Description 27

V7111 24 PORT Front Panel 27

V7111 24 PORT Rear Panel 28

Readers Notes 30

CHAPTER 3: INSTALLING THE V7111 GATEWAY 31

Installing the V7111 1x PORT 31

Unpacking 31

Package Contents 32

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19-inch Rack Installation Package (Optional) 32

Mounting the V7111 1x PORT 32

Cabling the V7111 1x PORT 34

Installing the V7111 24 PORT 37

Unpacking 37

Package Contents 38

Mounting the V7111 24 PORT 38

Cabling the V7111 24 PORT 40

Readers Notes 44

CHAPTER 4: GETTING STARTED 45

Configuration Concepts 45

Assigning the V7111 Gateway IP Address 46

Assigning an IP Address Using HTTP 46

Assigning an IP Address Using BootP 47

Assigning an IP Address Using the Voice Menu Guidance 47

Assigning an IP Address Using the CLI 49

Configure the V7111 Basic Parameters 50

Readers Notes 53

CHAPTER 5: WEB MANAGEMENT 55

Computer Requirements 55

Protection and Security Mechanisms 55

User Accounts 56

Limiting the Embedded Web Server to Read-Only Mode 57

Disabling the Embedded Web Server 57

Accessing the Embedded Web Server 58

Using Internet Explorer to Access the Embedded Web Server 58

Getting Acquainted with the Web Interface 59

Main Menu Bar 60

Saving Changes 61

Entering Phone Numbers in Various Tables 61

Searching for Configuration Parameters 61

Protocol Management 63

Protocol Definition Parameters 63

Configuring the Advanced Parameters 89

Configuring the Number Manipulation Tables 108

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Mapping NPI/TON to Phone-Context 113

Configuring the Routing Tables 115

Configuring the Profile Definitions 127

Configuring the Endpoint Phone Numbers 133

Configuring the Hunt Group Settings 135

Configuring the Endpoint Settings 138

Configuring RADIUS Accounting Parameters 144

Configuring the FXO Parameters 145

Configuring Voice Mail (VM) Parameters 148

Protocol Management ini File Parameters 151

Advanced Configuration 157

Configuring the Network Settings 157

Configuring the IP Routing Table 166

Configuring the Media Settings 172

Restoring and Backing up the Gateway Configuration 186

Regional Settings 187

Security Settings 189

Configuring the Management Settings 198

Status & Diagnostics 210

Gateway Statistics 210

Activating the Internal Syslog Viewer 215

Device Information 216

Viewing the Ethernet Port Information 217

Monitoring the Gateway Channels (Home Page) 218

Viewing the Status of Channels 218

Adding a Port Description 220

Resetting a Channel 221

Software Update 221

Software Upgrade Wizard 221

Auxiliary Files 226

Maintenance 229

Locking and Unlocking the Gateway 229

Saving Configuration 231

Resetting the V7111 Gateway 232

Logging Off the Embedded Web Server 234

Readers Notes 235

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CHAPTER 6: INI FILE CONFIGURATION OF THE V7111 GATEWAY 237

Secured ini File 237

Modifying an ini File 238

The ini File Structure 238

The ini File Structure Rules 238

The ini File Example 239

Readers Notes 240

CHAPTER 7: USING BOOTP / DHCP 241

BootP/DHCP Server Parameters 241

Using DHCP 242

Using BootP 243

Upgrading the V7111 Gateway 243

Vendor Specific Information Field 243

Readers Notes 245

CHAPTER 8: TELEPHONY CAPABILITIES 247

Working with Supplementary Services 247

Call Hold and Retrieve 247

Consultation / Alternate 248

Call Transfer 248

Call Forward 249

Call Waiting 250

Message Waiting Indication 250

Configuring the DTMF Transport Types 251

Fax & Modem Transport Modes 252

Fax/Modem Settings 252

Configuring Fax Relay Mode 253

Configuring Fax/Modem Bypass Mode 253

Supporting V.34 Faxes 253

Supporting V.152 Implementation 254

FXO Operating Modes 255

IP-to-Telephone Calls 255

Telephone-to-IP Calls 260

ThroughPacket™ 263

Dynamic Jitter Buffer Operation 264

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Configuring the Gateways Alternative Routing (based on Connectivity and QoS) 265

Alternative Routing Mechanism 265

Determining the Availability of Destination IP Addresses 265

Relevant Parameters 266

Mapping PSTN Release Cause to SIP Response 266

Call Detail Record 266

Supported RADIUS Attributes 268

RADIUS Server Messages 270

Proxy or Registrar Registration Example 271

Configuration Examples 271

Establishing a Call between Two Gateways 271

SIP Call Flow 272

SIP Authentication Example 275

Remote IP Extension between FXO and FXS 277

Readers Notes 281

CHAPTER 9: NETWORKING CAPABILITIES 283

Ethernet Interface Configuration 283

NAT (Network Address Translation) Support 283

STUN 284

First Incoming Packet Mechanism 285

No-Op Packets 286

IP Multicasting 286

Point-to-Point Protocol over Ethernet (PPPoE) 286

Point-to-Point Protocol (PPP) Overview 286

PPPoE Overview 287

PPPoE in 3Com Gateways 288

Robust Reception of RTP Streams 289

Multiple Routers Support 289

Simple Network Time Protocol Support 290

IP QoS Using Differentiated Services (DiffServ) 290

VLANS and Multiple IPs 291

Multiple IPs 291

IEEE 802.1p/Q (VLANs and Priority) 291

Getting Started with VLANS and Multiple IPs 293

Readers Notes 298

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CHAPTER 10: ADVANCED SYSTEM CAPABILITIES 299

Restoring Networking Parameters to their Initial State 299

Establishing a Serial Communications Link with the V7111 Gateway 300

Automatic Update Mechanism 301

Startup Process 303

Using Parameter Tables 305

Table Indices 305

Table Permissions 306

Dynamic Tables vs. Static Tables 306

Secret Tables 306

Using the ini File to Configure Parameter Tables 307

Customizing the V7111 Web Interface 309

Replacing the Main Corporate Logo 309

Replacing the Background Image File 312

Customizing the Product Name 313

Modifying ini File Parameters using the Web AdminPage 313

Readers Notes 315

CHAPTER 11: SPECIAL APPLICATIONS - METERING TONES RELAY 317

Readers Notes 319

CHAPTER 12: SECURITY 321

IPSec and IKE 321

IKE 322

IPSec 323

Configuring the IPSec and IKE 323

SSL/TLS 332

SIP Over TLS (SIPS) 333

Embedded Web Server Configuration 333

Secured Telnet 334

Server Certificate Replacement 334

Client Certificates 336

SRTP 337

RADIUS Login Authentication 338

Setting Up a RADIUS Server 338

Configuring RADIUS Support 340

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Internal Firewall 342

Network Port Usage 344

Recommended Practices 345

Legal Notice 345

Readers Notes 346

CHAPTER 13: DIAGNOSTICS 347

Self-Testing 347

V7111 Gateway Line Testing 348

Syslog Support 349

Syslog Servers 350

Operation 350

Readers Notes 351

CHAPTER 14: SNMP-BASED MANAGEMENT 353

About SNMP 353

SNMP Message Standard 353

SNMP MIB Objects 354

SNMP Extensibility Feature 355

Carrier Grade Alarm System 355

Active Alarm Table 356

Alarm History 356

Cold Start Trap 356

Third-Party Performance Monitoring Measurements 357

Total Counters 358

Supported MIBs 358

Traps 361

SNMP Interface Details 362

SNMP Community Names 363

SNMP v3 USM Users 365

Trusted Managers 367

SNMP Ports 369

Multiple SNMP Trap Destinations 369

SNMP Manager Backward Compatibility 372

SNMP NAT Traversal 373

SNMP Administrative State Control 373

Node Maintenance 373

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Graceful Shutdown 374

3Com Element Management System 375

Readers Notes 376

CHAPTER 15: CONFIGURATION FILES 377

Configuring the Call Progress Tones and Distinctive Ringing File 377

Format of the Call Progress Tones Section in the ini File 377

Format of the Distinctive Ringing Section in the ini File 380

Prerecorded Tones (PRT) File 382

PRT File Format 382

The Coefficient Configuration File 383

User Information File 384

Readers Notes 386

CHAPTER 16: SELECTED TECHNICAL SPECIFICATIONS 387

V7111 1x PORT Specifications 387

V7111 24 PORT Specifications 391

Readers Notes 394

APPENDIX A: V7111 SIP SOFTWARE KIT 395

Readers Notes 396

APPENDIX B: SIP COMPLIANCE TABLES 397

SIP Functions 397

SIP Methods 397

SIP Headers 398

SDP Headers 400

SIP Responses 401

1xx Response – Information Responses 401

2xx Response – Successful Responses 401

3xx Response – Redirection Responses 402

4xx Response – Client Failure Responses 402

5xx Response – Server Failure Responses 404

6xx Response – Global Responses 404

Reader's Notes 405

APPENDIX C: BOOTP/TFTP CONFIGURATION UTILITY 407

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When to Use the BootP/TFTP 407

An Overview of BootP 407

Key Features 408

Specifications 408

Installation 408

Loading the cmp File, Booting the Device 409

BootP/TFTP Application User Interface 409

Function Buttons on the Main Screen 411

Log Window 411

Setting the Preferences 413

BootP Preferences 413

TFTP Preferences 414

Configuring the BootP Clients 415

Adding Clients 416

Deleting Clients 417

Editing Client Parameters 417

Testing the Client 417

Setting Client Parameters 418

Using Command Line Switches 419

Managing Client Templates 421

APPENDIX D: RTP/RTCP PAYLOAD TYPES AND PORT ALLOCATION 423

Packet Types Defined in RFC 3551 423

Defined Payload Types 424

Default RTP/RTCP/T.38 Port Allocation 424

Readers Notes 426

APPENDIX E: ACCESSORY PROGRAMS AND TOOLS 427

TrunkPack Downloadable Conversion Utility 427

Converting a CPT ini File to a Binary dat File 428

Encoding / Decoding an ini File 430

Creating a Loadable Prerecorded Tones File 431

Call Progress Tones Wizard 433

About the Call Progress Tones Wizard 434

Installation 434

Initial Settings 434

Recording Screen – Automatic Mode 435

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Recording Screen – Manual Mode 437

The Call Progress Tones ini File 438

Adding a Reorder Tone to the CPT File 440

APPENDIX F: SNMP TRAPS 441

Alarm Traps 441

Component: Board#<n> 442

Component: AlarmManager#0 446

Component: EthernetLink#0 447

Log Traps (Notifications) 448

Other Traps 449

Trap Varbinds 450

Readers Notes 452

APPENDIX G: INSTALLATION AND CONFIGURATION OF APACHE HTTP SERVER

453

Windows 2000/XP Operation Systems 453

Linux Operation Systems 454

Readers Notes 456

APPENDIX H: REGULATORY INFORMATION 457

Safety Notices 459

Telecommunication Safety 459

Industry Canada Notice 459

V7111 FXO Notice 460

Network Compatibility of FXO Ports 460

FCC Statement 460

ACTA Customer information 460

APPENDIX I: OBTAINING SUPPORT FOR YOUR 3COM PRODUCT 463

Customer Support 463

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A

BOUT

T

HIS

G

UIDE

This guide describes the use of the V7111 VoIP media gateways. The model numbers that

this manual supports are:

 VCX V7111 VoIP Gateway 2 FXS (3CRVG71115-07)

 VCX V7111 VoIP Gateway 4 FXS (3CRVG71110-07)

 VCX V7111 VoIP Gateway 8 FXS (3CRVG71111-07)

 VCX V7111 VoIP Gateway 24 FXS (3CRVG71112-07)

 VCX V7111 VoIP Gateway 4 FXO (3CRVG71113-07)

 VCX V7111 VoIP Gateway 8 FXO (3CRVG71114-07)

 VCX V7111 VoIP Gateway 2 FXS, 2FXO (3CRVG71116-07)

 VCX V7111 VoIP Gateway 4 FXS, 4 FXO (3CRVG71117-07)

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

printing. However, due to ongoing product improvements and revisions, 3Com cannot

guarantee 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 at

www.3com.com under Support /

Downloads & Drivers.

When viewing this manual on CD, Web site or on any other electronic copy, all

cross-references are hyperlinked. Click on the page or section titles (shown in blue)

to reach the individual cross-referenced item directly. To return back to the point

from where you accessed the cross-reference, press the ALT and ◄ keys.

How to Use This Guide

This book covers these topics:



Chapter 1: Overview



Chapter 2: V7111 Physical Description



Chapter 3: Installing the V7111



Chapter 4: Getting Started



Chapter 5: Web Management



Chapter 6: ini File Configuration of the V7111

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

Chapter 7: Using BootP / DHCP



Chapter 8: Telephony Capabilities



Chapter 9: Networking Capabilities



Chapter 10: Advanced System Capabilities



Chapter 11: Special Applications - Metering Tones Relay



Chapter 12: Security



Chapter 13: Diagnostics



Chapter 14: SNMP-Based Management



Chapter 15: Configuration Files



Chapter 16: Selected Technical Specifications

 Appendix

A: V7111 SIP Software Kit



Appendix B: SIP Compliance Tables



Appendix C: BootP/TFTP Configuration Utility



Appendix D: RTP/RTCP Payload Types and Port Allocation



Appendix E: Accessory Programs and Tools



Appendix F: SNMP Traps



Appendix G: Installation and Configuration of Apache HTTP Server



Appendix H: Regulatory Information

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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Related Documentation

The following documents are available on the 3Com Partner Access Web site for the 3Com

V7111 gateway:

 900-0485-01 V7111 VoIP Gateway Installation Guide

Documentation Comments

Your suggestions are important to us because we want to make our documentation more

useful to you.

Please send e-mail comments about this guide or any of the V7111 documentation and Help

systems to:

[email protected]

Please include the following information with your comments:

 Document title

 Document part number (usually found on the front page)

 Page number

 Your name and organization (optional)

Example:

3Com VCX V7111 VoIP Gateway User Guide

Part Number 900-0486-01

Page 25

Notices

WEEE EU Directive

Pursuant to the WEEE EU Directive, electronic and electrical waste must not be disposed of

with unsorted waste. Please contact your local recycling authority for disposal of this product.

Abbreviations and Terminology

Each abbreviation, unless widely used, is spelled out in full when first used. Only industry-

standard terms are used throughout this manual. Hexadecimal notation is indicated by 0x

preceding the number.

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V7111 refers to the V7111 24 PORT, V7111 18 PORT, V7111 14 PORT and V7111

12 PORT VoIP gateways.

V7111 1x PORT refers to the V7111 18 PORT, V7111 14 PORT and V7111 12

PORT VoIP gateways.

Where network appears in this manual, it means Local Area Network (LAN), Wide

Area Network (WAN), and the like accessed using the gateways Ethernet interface.

FXO (F

oreign Exchange Office) is the interface replacing the analog telephone and

connects to a Public Switched Telephone Network (PSTN) line from the Central

Office (CO) or to a Private Branch Exchange (PBX). The FXO is designed to receive

line voltage and ringing current, supplied from the CO or the PBX (just like an analog

telephone). An FXO VoIP gateway interfaces between the CO/PBX line and the

Internet.

FXS (F

oreign Exchange Station) is the interface replacing the Exchange (that is, the

CO or the PBX) and connects to analog telephones, dial-up modems, and fax

machines. The FXS is designed to supply line voltage and ringing current to these

telephone devices. An FXS VoIP gateway interfaces between the analog telephone

devices and the Internet.

WARNING:

Ensure that you connect FXS ports to analog telephone or to PBX-trunk lines only

and FXO ports to CO/PBX lines only.

The V7111 is supplied as a sealed unit and must only be serviced by qualified

service personnel.

Disconnect the V7111 from the mains and from the Telephone Network Voltage

(TNV) before servicing.

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C

HAPTER

1:

O

VERVIEW

This document provides you with the information on installation, configuration and operation

of the VoIP analog gateways listed in the table below:

Table 2 Supported Product Configurations

Product Name FXS FXO

Combined FXS /

FXO

Number of

Channels

V7111 24 PORT

9

8

24

V7111 18 PORT

9

4 + 4 8

V7111 14 PORT

9

2 + 2 4

V7111 12 PORT*

9

8

2

* The V7111 12 PORT differs from the V7111 14 PORT and V7111 18 PORT in that its configuration

excludes the RS-232 connector, the Lifeline option and outdoor protection.

As these units have similar functionality (with the exception of their number of channels and

some minor features), they are collectively referred to throughout this manual as the V7111.

Gateway Description

The V7111 series

analog VoIP gateways are cost-effective, cutting edge technology

products. These stand-alone analog VoIP gateways provide superior voice technology for

connecting legacy telephones, fax machines and PBX systems with IP-based telephony

networks, as well as for integration with new IP-based PBX architecture. These products are

designed and tested to be fully interoperable with leading softswitches and SIP servers.

The V7111 gateways incorporate up to 24 analog ports for connection, directly to an

enterprise PBX (FXO), or / and to phones, fax machines and modems (FXS), supporting up

to 24 simultaneous VoIP calls.

Additionally, the V7111 units are equipped with a 10/100 Base-TX Ethernet port for

connection to the network.

The V7111 gateways are best suited for small to medium size enterprises, branch offices or

for residential media gateway solutions.

The V7111 gateways enable users to make free local or international telephone / fax calls

between the distributed company offices, using their existing telephones / fax. These calls

are routed over the existing network ensuring that voice traffic uses minimum bandwidth.

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The V7111 gateways are very compact devices that can be installed as a desk-top unit, on

the wall or in a 19-inch rack.

The V7111 gateways support SIP (Session Initiation Protocol) protocol, enabling the

deployment of voice over IP solutions in environments where each enterprise or residential

location is provided with a simple media gateway.

This provides the enterprise with a telephone connection (for example, RJ-11), and the

capability to transmit the voice and telephony signals over a packet network.

The layout diagram (

Figure 1), illustrates a typical V7111 VoIP application.

Figure 1 Typical V7111 VoIP Application

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SIP Overview

SIP (Session Initialization Protocol) is an application-layer control (signaling) protocol used

on the V7111 for creating, modifying, and terminating sessions with one or more participants.

These sessions can include Internet telephone calls, media announcements and

conferences.

SIP invitations are used to create sessions and carry session descriptions that enable

participants to agree on a set of compatible media types. SIP uses elements called Proxy

servers to help route requests to the user's current location, authenticate and authorize users

for services, implement provider call-routing policies and provide features to users.

SIP also provides a registration function that enables users to upload their current locations

for use by Proxy servers. SIP, on the V7111, complies with the IETF (Internet Engineering

Task Force) RFC 3261 (see

http://www.ietf.org).

V7111 Features

This section provides a high-level overview of some of the many V7111 supported features.

General Features

 Superior, high quality Voice, Data and fax over IP networks.

 Toll quality voice compression.

 Enhanced capabilities including MWI, long haul, metering, CID and out door protection.

 Proven integration with leading PBXs, IP-PBXs, Softswitches and SIP servers.

 Spans a range of 2 to 24 FXS/FXO analog ports.

 Selectable G.711 or multiple Low Bit Rate (LBR) coders per channel.

 T.38 fax with superior performance (handling a round-trip delay of up to nine seconds).

 Echo Canceler, Jitter Buffer, Voice Activity Detection (VAD) and Comfort Noise

Generation (CNG) support.

 Comprehensive support for supplementary services.

 Web Management for easy configuration and installation.

 EMS for comprehensive management operations (FCAPS).

 Simple Network Management Protocol (SNMP) and Syslog support.

 SMDI support for Voice Mail applications.

 ThroughPacket™ proprietary feature that aggregates payloads from several channels

into a single IP packet to reduce bandwidth overhead.

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 Supports load balancing with proxy.

 T.38 fax fallback to PCM (or NSE).

 Can be integrated into a Multiple IPs and a VLAN-aware environment.

 Capable of automatically updating its firmware version and configuration.

 Secured Web access (HTTPS) and Telnet access using SSL / TLS.

 IPSec and IKE protocols are used in conjunction to provide security for control (for

example, SIP) and management (for example, SNMP and Web) protocols.

 Secured RTP (SRTP) according to RFC 3711, used to encrypt RTP and RTCP transport.

V7111 1x PORT Hardware Features

 Combined FXS/FXO gateways (4 FXS and 4 FXO ports on the V7111 18 PORT; 2 FXS

and 2 FXO ports on the V7111 14 PORT).

 V7111 1x PORT compact, rugged enclosure only one-half of a 19-inch rack unit, 1 U

high.

 Lifeline - provides a wired phone connection to PSTN line when there is no power, or the

network fails (combined FXS/FXO gateways provide a Lifeline connection available on all

FXS ports).

 LEDs on the front panel that provide information on the operating status of the media

gateway and the network interface.

 Reset button on the rear panel that restarts the V7111 1x PORT gateway, and is also

used to restore the V7111 1x PORT parameters to their factory default values.

V7111 24 PORT Hardware Features

 V7111 24 PORT 19-inch, 1U rugged enclosure provides up to 24 analog FXS ports,

using a single 50 pin Telco connector.

 LEDs on the front and rear panels that provide information on the operating status of the

media gateway and the network interface.

 Reset button on the front panel that restarts the V7111 24 PORT gateway, and is also

used to restore the V7111 24 PORT parameters to their factory default values.

SIP Features

The V7111 SIP gateway complies with the IETF RFC 3261 standard.

 Reliable User Datagram Protocol (UDP) transport, with retransmissions.

 Transmission Control Protocol (TCP) Transport layer.

 SIPS using TLS.

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