AirLive VoIP-400 User Manual

VoIP 400 Series

VoIP Gateway Router

User’s Guide

FCC

Notice

ITG User’s Guide

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed in accordance with the instruction manual, may cause harmful interference to radio communication. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at the user’s own expense.

CE Declaration of conformity

This equipment complies with the requirements relating to electromagnetic compatibility, EN 55022 Class A for ITE and EN 50082-1. This meets the essential protection requirements of the European Council Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility.

Trademarks

All brand, company and product names are trademarks or registered trademarks of their respective companies.

Overview

How to Use This Manual

This manual was designed for the non-technical users of the Internet telephony gateway (ITG). It contains information about the functions operation and basic instructions for its installation.

ITG User’s Guide

Chapter 1: Overview

This chapter provides conceptual overview and description of the ITG, explanation of how the ITG interacts with each for enabling VoIP

Chapter 2: Installing the ITG

services, and an overview of the required tasks

This chapter describes required steps to properly and safely install and configure the ITG on

Chapter 3: ITG Concepts

your network

This chapter gives information about the ITG technology and describes basic concepts using ITG for providing telephony services over IP network

Chapter 4: Configuring ITG from Web Browser

This chapter explains procedures for configuring the ITG from a web browser

Chapter 5: Making a Call with ITG

This chapter explains how to make Internet calls from telephony devices connected to the ITG directly or indirectly.

Chapter 6: Application Samples

This chapter provides some application examples and information on how to configure the ITG under these samples.

Chapter 7: Troubleshooting Tips

This chapter provides troubleshooting information in case the user has problems installing or maintaining the ITG.

Overview

Important Safety Instructions

Before you plug the ITG into an electrical outlet, carefully read all the installation instructions in Chapter 2.

For your own safety and the safety of your equipment, always take the following precautions:

‧

Follow instructions and warnings in the documentation.

‧

Never push any object through the fan vent or other openings in the equipment.

Such action may produce a short circuit, causing fire, electric shock, or equipment damage.

‧

Keep the ITG away from all chemicals and sources of liquids.

‧

“CAUTION – Always disconnect all telephone lines from the wall outlet before

servicing or disassembling this equipment.”

‧

“CAUTION – Do not connected the TNV-2 connectors ( P1, P2 ) to wall TNV

outlet.”

‧

“CAUTION – To reduce the risk of fire, use only No. 26

AWG or larger, telecommunication line cord.”

Warning

‧

Connection of the RJ45 connector from an ITG to TNV circuits can cause

permanent damage to the ITG.

‧

Incorrectly connecting telephony devices to the RJ11 port on the Telephony

Interface Module

can cause permanent damage to the module.

ITG User’s Guide

Overview

ITG User’s Guide

Documentation Abbreviations

Throughout this guide, the user will come across a number of abbreviations that are common throughout the industry. The user should be familiar with the following abbreviations:

ATPM

CLI

DSP

Address Translation and Parsing Manager

Command Line Interface

Digital Signal Processor

DTMF

FXO

FXS

H.323

ICMP

IMTC International Multimedia Telecommunications Consortium

ITG

KTS

LAN

LED

PBX

PSTN

RTP

TCID

Dual Tone Multi-Frequency

Foreign Exchange Office

Foreign Exchange Station

ITU specification for multimedia transmission over IP networks

Internet Control Message Protocol

Internet Protocol

Internet Telephony Gateway

Key Telephone System

Local Area Network NVS

Non-Volatile Storage

Light Emitting Diode

Private Branch Exchange

Public Switched Telephone Network

Real-Time Transport

Telephony Channel Identifier

TFTP

TIM

TNV

UDP

UTP

VAD

Overview

Trivial File Transfer Protocol

Telephony Interface Modules

Telephone Network Voltage

User Datagram Protocol

Unshielded Twisted Pair

Voice Activity Detection WAN

Wide Area Network

Notation Conventions

Throughout this guide, different type styles and characters are used. These serve a variety of purposes as described below:

Convention

boldface

italic

courier

[ ]

ITG User’s Guide

Description

Commands and keywords are in boldface.

Arguments for which you supply values are in italics.

Messages that the ITG CLI displays are in plain courier font.

Elements in square brackets are optional.

{ x | y | z }

[ x | y | z ]

string

key

Alternative but required elements are grouped in braces ({ }) and separated by vertical bars ( | ).

Optional alternative keywords are grouped in brackets ([ ]) and separated by vertical bars ( | ).

A non-quoted set of characters. Do not use quotation marks around the string or the string will include the quotation marks.

A key on the VT-100 terminal of terminal emulator. For example

<Enter> denotes the Enter key

Overview

ITG User’s Guide

Table of Contents

Chapter 1 Overview 9

1.1 Features

1.2 Networking Protocols

1.3 Package Contents

1.4 Front Panel LED Indicators Reset Button

1.5 Rear Panel LAN / Console Ports

10 10 11

11 11

Chapter 2 Installing the ITG 13

2.1 Network Requirements

2.2 Installing the ITG

2.3 Connecting to the telephony devices

2.4 Connecting to the Network

2.5 Providing Power to the ITG

2.6 Assigning IP address to the ITG

Chapter 3 ITG Concepts 15

3.1 How the ITG Operates

3.2 ATPM

3.3 Destination

3.4 Hunt Group

3.5 Dial Plan (FXO2S2) Address Table Hunt Group Table Destination Table

3.6 DTMF Relay

3.7 Voice Codecs

16 16 16 17

Chapter 4 Configuring ITG from a Web Browser 18

4.1 Http setting mode

4.2 Web Browser setting sample

Overview

ITG User’s Guide

Chapter 5 Making a Call with ITG 44

5.1 Making a call with ITG FXS Module

5.2 Making a call with ITG FXO Module

5.3 Making a call with ITG Application Sample

Chapter 6 Application Samples 49

6.1 Module Configuration

Chapter 7 Troubleshooting Tips 52

Appendix A

A.1 IP Parameters

A.2 ATPM Address Table

A.3

A.4 ATPM Destination Table

Figure 1-1 2 ports ITG Front Panel

Figure 1-1 2 ports ITG Rear Panel

Worksheets

ATPM Hunt Group Table

List of Figures

Overview

ITG User’s Guide

Chapter 1 Overview

This chapter gives an overview of the 2 ports & 4 ports desktop version Internet Telephony Gateway (ITG) and a detailed description of its front panel and rear panel.

1.1

Features

The ITG is a cost-effective and highly reliable analog Voice over IP (VoIP) Gateway that offers

toll quality voice and real-time fax data over IP networks. With its embedded architecture, the gateway is ideal for VoIP applications associated with Remote Office and Branch

Office (ROBO) environments. With its built-in user-friendly interface, the gateway may be installed easily and conveniently to yield immediate cost savings. One Internet Telephony Gateway supports up to eight voice or Fax communications simultaneously.

Implemented with an efficient Real-Time Operating System (RTOS) and flash memory, the ITG provides upgradeable capabilities, so it may be programmed with updated firmware locally

or remote management capabilities, configurable signaling to work with PBX, KTS, and/or telephone. The ITG utilizes various voice coders and fax algorithms, echo cancellation, Voice Activity Detection (VAD) , Comfort Noise Generation (CNG) , and lost packet recovery algorithms.

1.2

Networking Protocols

The ITG supports several industry-standard for voice communication. The following table describes these protocols.

Networking Protocol

via the network at any time. It comes equipped with

advanced VoIP related technology. It

includes

networking

Description

protocols required

Internet Protocol (IP)

Voice over IP Protocol VoIP enables the ITG to transfer voice communications over an IP

(VoIP)

Trivial File Transfer Protocol (TFTP)

Real-Time Transport

(RTP)

1.3

Overview

Package Contents

IP is a messaging protocol that addresses and sends packets across

the network. To enable IP protocol, the ITG must have a Real IP address, subnet, and gateway assigned to it.

network. The ITG employs ITU-T H.323 protocol for setting up call with one another.

TFTP allows you to transfer files over the network. The ITG implements a TFTP client allowing you to download new revision firmware from a TFTP server. The TFTP client requires a TFTP server in your network.

RTP is a standard for transporting real-time data over IP network. The ITG uses RTP protocol to send digitized and compressed voice packets.

The contents of your product should contain the following items:

Internet Telephony Gateway 2 port or 4 port desk top version

z z 100-240V Power Adapter z 9-pin straight through RS-232 cable z User’s guide

1.4

Front Panel

The front panel of the ITG contains a push button and LED indicators. The following figure illustrates the front panel of the ITG.

Figure 1-1 2 ports ITG Front Panel

Figure 1-2 4 ports ITG Front Panel

LED Indicators

When the ITG powers on, it switches the state of COL, LNK, 100 and ACT LED indicators in red color per 200 ms in a manner shown in the following table

ACT

100

LNK

COL Boot loader State

solid on solid on solid on solid on Execution start

blink

off

blink

off

blink

off

blink

solid on Memory test

solid on Loading application code

solid on Loading TFTP loader code

blink Failed loading application code and TFTP loader

off

The LED indicators on the front panel display the current status of the ITG as described in the following table:

Indicator Color Activity

PWR

Green

Power is supplied to the gateway.

Memory test fail

Indication

ITG User’s Guide

Overview

SYSTEM

ITG User’s Guide

LAN

y ACT y 100M

y LNK y COL

LINE Channels 1-4

Reset Button

There is a push button located behind a small hole next to the SYSTEM LED. allows you to reset the ITG or force the ITG to enter firmware upgrade mode.

Green

Blinking The system is running. (Heartbeat LED)

Green Green Green Green

Green

On On Off On On

Off On Blinking

Data is presented on LAN. The gateway is connected to LAN at 100Mb/s. The gateway is connected to LAN at 10Mb/s. The gateway is connected to LAN. Data collision is occurring on the network connection.

The line is idle. The line is being used. The line is ringing.

This button

To reset the gateway, push a small, stiff object into the hole until the SYSTEM LED stops blinking, then release the button.

Powering on the gateway while pressing down the button for 5 seconds forces the ITG to enter download mode

1.5

Rear Panel

The rear panel of the ITG has two FXS ports for 2 ports ITG and four ports with two FXO

and two FXS ports for 4 ports ITG. Depending telephony interface ports may be connected telephone

sets of central office. In addition to the telephony interface ports, there is an power

adapter connection hole on the rear panel.

Figure 1-1 2 ports ITG Rear Panel

Console LAN

FXO FXS

Figure 1-2 4 ports ITG Rear Panel

the type of the telephony interface. The

to telephony devices, such as PBX, KTS, and

FXS

12VDC

LAN / Console Ports

The ITG is equipped with an Ethernet auto-negotiation capability. The Ethernet interface port is located on the rear panel. In addition to

the Ethernet

interface with 10/100 Mbps

Overview

ITG User’s Guide

interface port, there is a 9-pin RS-232 interface port on the rear panel. Their functions are

Port

described below:

RJ45

9-pin RS-232 User

Label

LAN

Console

Function

Connecting the ITG to a 10/100 Mbps Ethernet network

Connecting the ITG to a VT-100 terminal or terminal

emulator for configuring the ITG

Overview

ITG User’s Guide

Chapter 2 Installing the ITG

This chapter gives information on how to install the ITG.

2.1

Network Requirements

For the ITG to successfully operate in your network, your network must meet the following requirements:

1. A working 10/100 Base-T Ethernet. The ITG connects to Internet via an Ethernet LAN.

2. IP network that supports gateway, and subnet mask. You’ll need static IP address to

2.2 Installing the ITG

assign the ITG.

Due to the ITG is used in a desktop configuration. Ensure that the ITG is placed in a clean, well-ventilated, and vibration-free environment.

When the ITG is used, be certain that the unit is placed on a sturdy, flat surface, near a grounded power outlet. At least three inches of the ITG for good ventilation.

2.3 Connecting to the telephony devices

clearance must be provided on both sides of

The ITG supports two types of TIM. One is FXO and the other is FXS. 2 ports ITG supports FXS only, and 4 ports ITG supports 2 FXO for connecting to telephony devices.

The FXO module is designed for connecting to PBXs or central office switches.

and 2 FXS. Each port has RJ11 ports

The FXS module is designed for connecting to analog telephone sets or G3 fax machines. Connecting the telephony devices to the

appropriate RJ11 ports on the TIM.

Warning: connection of incorrect telephony devices to the ports on the TIM can cause

permanent damage to the TIM and/or the ITG

2.4 Connecting to the Network

The RJ45 network port on the rear panel supports 10/100 Mbps half-duplex connections to Ethernet. You can use either Category 3 or 5 straight-through UTP cable for 10 Mbps connection, but use Category 5 for 100 Mbps connection. To connect to end of the Ethernet cable to the cable to an Ethernet switching hub or repeater hub.

2.5 Providing Power to the ITG

To provide power to the ITG complete the following steps:

RJ45 port on the rear panel of the ITG and other end of the

Ethernet, insert one

Overview

1. Connect one end of the power adapter that came with the ITG to the power receptacle on the rear panel.

2. Connect the other end of the power adapter to an AC power outlet.

3. The ITG will execute the memory testing and application code automatically..

2.6 Assigning IP address to the ITG

The IP address is the unique logical address identifying each IP node, such as the ITG, on an IP network. An IP address is a 32-bit number expressed as four decimal numbers from 0 to 255 separated by periods. The ITG needs static IP address and be aware of the subnet mask and default gateway (typically a router) of your data

from the IP network. Consult your network manager to obtain a unique and static IP address for the ITG, the IP work sheet in Appendix A

subnet mask and default gateway of your network, and fill out the

before configuring the gateway. Procedures for assigning

IP address, default gateway and subnet mask is available in Chapter 4.

ITG User’s Guide

network to be able to send to and receive

Installing ITG

ITG User’s Guide

Chapter 3 ITG Concepts

The ITG enables the transmission of voice and fax traffic over any IP network by digitizing voice

and fax signals, encapsulating the information within IP packets, and then sending the

packets across the IP network

3.1 How the ITG Operates

1. The TIM inside the ITG digitizes analog voice signals at 8 Kbps.

2. ITG system software handles the:

y Capture of telephone number presented as DTMF tones.

y Mapping the telephone number to the IP address of remote ITG.

y Setting up calls with remote ITGs utilizing H.323 call control protocol.

y Digitizing, compressing and encapsulating the voice into IP packets and transmission

of the IP packets onto the Ethernet LAN.

3. A router attached to the LAN forwards the IP packets across the WAN, where they will be received by another ITG at the remote.

4. The process is reversed at the remote ITG.

3.2

ATPM

To allow you to easily dial a telephone or fax on the network, the ITG maps a series of dialed digits to the IP address of the remote ITG whose phone or fax you are calling. information is contained in a database inside each ITG called the dial plan.

This mapping

Based on the dial plan the Address Translation and Parsing Manager (ATPM) inside the ITG translate telephony numbers to IP addresses of number dialed by users, decides whether the dial string is part of the maps it a remote ITG. When the call is dial string will be sent along to the remote ITG.

3.3

Destination

set up to the destination, a sub-string of the original

remote ITGs. The ATPM collects telephone

dial plan and, if it is,

The destination is where a call is terminated. Typically, for inbound calls from IP network, the ITG terminals the call at one of the telephony port where the

call terminated. For calls initiated from telephony ports, the ITG

telephony ports. The destination for the call is the

forward the call to a remote ITG via IP network, and the remote ITG terminal the call. The destination of the call is the remote ITG.

3.4

Hunt Group

Instead of directly mapping a phone number to a destination, the ATPM first maps the phone

number to a group of destinations known destinations that are equivalent.

For example, the customer support group of a company

a Hunt Group. A hunt group is a group of

Configuring ITG from a Web Browser

might have 20 people who can handle support calls. Access to customer support is through a single phone number but the next available support person is actually connected upon each incoming call. These 20 phones would be configured as a hunt group. A hunt group consists of a phone number and a list of destinations (members of the group). When

hunt group, the ITG attempts to terminate the call at group, one at a time until a call is successfully completed.

Every destination that can be reached by dialing a phone number is a member of at least one hunt group. When an address is presented to ATPM for lookup, number. As a second step, the hunt group ID is presented to ATPM to get the list of

members.

effectively bypass the hunt group feature, simply make a unique hunt group for

each destination and one member in each hunt group.

3.5 Dial Plan (FXO2S2)

The dial plan is a database inside the ITG for the ATPM to map telephony numbers users dialed to the IP address of remote ITGs. The dial group table and the address table. Users how to setup calls with remote ITGs.

Address Table

The address table maps a phone number to a hunt group. The table contains entries that specify the following information:

‧ Telephone number

‧ The hunt group the phone number maps to.

‧ The minimum number of digits to collect before the ATPM starting address lookup.

‧ The maximum number of digits the ATPM collects before it considers the dial string is

complete.

‧ Number of digits forward to the destination.

‧ Address table sample:

Address

Entry

201 3 3 3 3 None 301 4 3 3 3 None

8 1 3 3 0 None 0 1 1 1 0 None

20 11 5 5 2 None

Hunt Grp_Id

Hunt Group Table

The hunt group table maps a hunt group to a list of destinations. Hunt group sample

Group id Type #Members Member ids

--------------------------------------------------------------------------- 1 2 1 1 3 2 1 3

ITG User’s Guide

an incoming phone number matches the phone number of the

each of the destinations in the hunt

the output is a hunt group ID

plan consists of the destination table, hunt

need to setup these tables, so that the ITG knows

Min. Digits

Max. Digits

Prefix strip

Prefix Address

Configuring ITG from a Web Browser

ITG User’s Guide

4 2 1 4 11 2 1 11

Destination Table

The destination table maps a destination to a telephony port or the IP address of a remote ITG.

Destination table sample

Dest id Mode Destination

------------------------------------------------------ 1 Local PORT = 0 3 Local PORT = 2 4 Local PORT = 3 11 H.323 Dest = 192.168.0.55/1720 TCP

3.6

DTMF Relay

Voice from PSTN is compressed by the ITG before sending across the IP network and then decompressed for

ideally compressing and decompressing human voice. If the compression / decompression

process

the destination ITG. The voice coders supported by the ITG are designed

is performed on DTMF tone which needs to be conveyed across IP network, distortion might be too significant to be not cognizable in the receiving end. To overcome the shortcoming that the voice coders can not perfectly encode DTMF tone, the ITG encodes DTMF tone into special packets. The packets are then sent to the destination ITG via generates handles DTMF tone is so called DTMF relay.

the DTMF tone, and then sends the tone to the PSTN. The way the ITG

The ITG handles DTMF relay per H.323 specifications. Certain third party VoIP devices

handle DTMF relay per IMTC standard. For the ITG to interoperate with those VoIP

may devices, users need to specify relay technique. Refer to CLI command to select DTMF relay mode.

3.7

Voice Codecs

Voice codecs supported by the ITG include G.711, G.723.1 5.3kbps, G.723.1 6.3kbps and G.729 AB. When setting up a call, two ITG automatically negotiate with each other until an agreed upon codec is determined.

a separate IP connection. The destination ITG decodes the packets,

which remote VoIP devices uses IMTC conforming DTMF

Chapter 8 for detailed information on how

Configuring ITG from a Web Browser

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