AirLive VoIP 400 Series User manual

VoIP 400 Series
VoIP Gateway Router
User’s Guide

ITG User’s Guide
FCC Notice
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.
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Overview

ITG User’s Guide
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.
Chapter 1: Overview
This chapter provides conceptual overview and description of the ITG, explanation of how
the ITG interacts with each for enabling VoIP
services, and an overview of the required tasks
Chapter 2: Installing the ITG
This chapter describes required steps to properly and safely install and configure the ITG on
your network
Chapter 3: ITG Concepts
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.
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ITG User’s Guide
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.
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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 Address Translation and Parsing Manager
CLI Command Line Interface
DSP
Digital Signal Processor
DTMF
Dual Tone Multi-Frequency
FXO
Foreign Exchange Office
FXS
Foreign Exchange Station
H.323 ITU specification for multimedia transmission over IP networks
ICMP Internet Control Message Protocol
IMTC International Multimedia Telecommunications Consortium
IP Internet Protocol
ITG Internet Telephony Gateway
KTS Key Telephone System
LAN
Local Area Network NVS
Non-Volatile Storage
LED
Light Emitting Diode
PBX
Private Branch Exchange
PSTN Public Switched Telephone Network
RTP Real-Time Transport
TCID Telephony Channel Identifier
TFTP
Trivial File Transfer Protocol
TIM
Telephony Interface Modules
TNV
Telephone Network Voltage
UDP User Datagram Protocol
UTP Unshielded Twisted Pair
VAD Voice Activity Detection WAN
Wide Area Network
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ITG User’s Guide
Notation Conventions
Throughout this guide, different type styles and characters are used. These serve a variety of
purposes as described below:
Convention Description
boldface Commands and keywords are in boldface.
italic Arguments for which you supply values are in italics.
courier Messages that the ITG CLI displays are in plain courier font.
[ ] Elements in square brackets are optional.
{ x | y | z } Alternative but required elements are grouped in braces ({ }) and
separated by vertical bars ( | ).
[ x | y | z ] Optional alternative keywords are grouped in brackets ([ ]) and separated
by vertical bars ( | ).
string A non-quoted set of characters. Do not use quotation marks around the
string or the string will include the quotation marks.
key A key on the VT-100 terminal of terminal emulator. For example
<Enter> denotes the Enter key
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Overview

ITG User’s Guide
Table of Contents
Chapter1 Overview
9
1.1 Features 9
1.2 Networking Protocols 9
1.3 Package Contents 9
1.4 Front Panel 10
LED Indicators 10
Reset Button 11
1.5 Rear Panel 11
LAN / Console Ports 11
Chapter 2 Installing the ITG 13
2.1 Network Requirements 13
2.2 Installing the ITG 13
2.3 Connecting to the telephony devices 13
2.4 Connecting to the Network 13
2.5 Providing Power to the ITG 13
2.6 Assigning IP address to the ITG 14
Chapter 3 ITG Concepts 15
3.1 How the ITG Operates 15
3.2 ATPM 15
3.3 Destination 15
3.4 Hunt Group 15
3.5 Dial Plan (FXO2S2) 16
Address Table 16
Hunt Group Table 16
Destination Table 17
3.6 DTMF Relay 17
3.7 Voice Codecs 17
Chapter 4 Configuring ITG from a Web Browser 18
4.1 Http setting mode 18
4.2 Web Browser setting sample 30
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ITG User’s Guide
Chapter 5 Making a Call with ITG 44
5.1 Making a call with ITG FXS Module 44
5.2 Making a call with ITG FXO Module 44
5.3 Making a call with ITG Application Sample 45
Chapter 6 Application Samples 49
6.1 Module Configuration 49
Chapter 7 Troubleshooting Tips 52
Appendix A Worksheets 54
A.1 IP Parameters 54
A.2 ATPM Address Table 54
A.3 ATPM Hunt Group Table 55
A.4 ATPM Destination Table 56
List of Figures
Figure 1-1 2 ports ITG Front Panel 10
Figure 1-1 2 ports ITG Rear Panel
11
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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 via the network at any time. It comes equipped with
remote management capabilities, configurable signaling to work with PBX, KTS, and/or
telephone. The ITG utilizes
advanced VoIP related technology. It includes
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 networking protocols required
for voice communication. The following table describes these protocols.
Networking Protocol Description
Internet Protocol (IP)
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.
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)
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.
1.3 Package Contents
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ITG User’s Guide
The contents of your product should contain the following items:
zInternet Telephony Gateway 2 port or 4 port desk top version
z100-240V Power Adapter
z9-pin straight through RS-232 cable
zUser’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 off solid on Memory test
blink blink off solid on Loading application code
blink blink blink solid on Loading TFTP loader code
blink blink blink blink Failed loading application code and TFTP loader
off off blink off Memory test fail
The LED indicators on the front panel display the current status of the ITG as described in
the following table:
Indicator Color Activity Indication
PWR Green On Power is supplied to the gateway.
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ITG User’s Guide
SYSTEM Green Blinking The system is running. (Heartbeat LED)
LAN
y ACT
y 100M
y LNK
y COL
Green
Green
Green
Green
On
On
Off
On
On
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.
LINE
Channels
1-4
Reset Button
Green Off
On
Blinking
The line is idle.
The line is being used.
The line is ringing.
There is a push button located behind a small hole next to the SYSTEM LED. This button
allows you to reset the ITG or force the ITG to enter firmware upgrade mode.
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
on the type of the telephony interface. The
telephony interface ports may be connected
to telephony devices, such as PBX, KTS, and
telephone
sets of central office. In addition to the telephony interface ports, there is an power
adapter connection hole on the rear panel.
Console LAN FXS
12VDC
Figure 1-1 2 ports ITG Rear Panel
Console LAN FXO FXS
Figure 1-2 4 ports ITG Rear Panel
12VDC
LAN / Console Ports
The ITG is equipped with an Ethernet interface with 10/100 Mbps
auto-negotiation capability. The Ethernet interface port is located on the rear panel. In addition
to
the Ethernet
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ITG User’s Guide
interface port, there is a 9-pin RS-232 interface port on the rear panel. Their functions are
described below:
Port Label Function
RJ45 LAN Connecting the ITG to a 10/100 Mbps Ethernet network
9-pin RS-232 User
Console
Connecting the ITG to a VT-100 terminal or terminal
emulator for configuring the ITG
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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
assign the ITG.
2.2 Installing 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
clearance must be provided on both sides of
the ITG for good ventilation.
2.3 Connecting to the telephony devices
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
and 2 FXS. Each port has RJ11 ports
for connecting to telephony devices.
The FXO module is designed for connecting to PBXs or central office switches.
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
Ethernet, insert one
end of the Ethernet cable to the
RJ45 port on the rear panel of the ITG and other end of 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:
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ITG User’s Guide
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
network to be able to send to and receive
data
from the IP network. Consult your network manager to obtain a unique and static IP
address for the ITG, the IP
subnet mask and default gateway of your network, and fill out the
work sheet in Appendix A
before configuring the gateway. Procedures for assigning
IP address, default gateway and subnet mask is available in Chapter 4.
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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.
This mapping
information is contained in a database inside each ITG called the dial plan.
Based on the dial plan the Address Translation and Parsing Manager (ATPM) inside the ITG
translate telephony numbers to IP addresses of
remote ITGs. The ATPM collects telephone
number dialed by users, decides whether the dial string is part of the
dial plan and, if it is,
maps it a remote ITG. When the call is
set up to the destination, a sub-string of the original
dial string will be sent along to the remote ITG.
3.3 Destination
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 ports. The destination for the call is the
telephony port where the
call terminated. For calls initiated from telephony ports, the ITG
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
as a Hunt Group. A hunt group is a group of
destinations that are equivalent.
For example, the customer support group of a company
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ITG User’s Guide
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
an incoming phone number matches the phone number of the
hunt group, the ITG attempts to terminate the call at
each of the destinations in the hunt
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,
the output is a hunt group ID
number. As a second step, the hunt group ID is presented to ATPM to get the list of
members.
To 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
plan consists of the destination table, hunt
group table and the address table. Users
need to setup these tables, so that the ITG knows
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
Hunt
Grp_Id
Min.
Digits
Max.
Digits
Prefix
strip
Prefix
Address
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 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
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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
Destid 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
by the destination ITG. The voice coders supported by the ITG are designed
for
ideally compressing and decompressing human voice. If the compression / decompression
process
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
a separate IP connection. The destination ITG decodes the packets,
generates
the DTMF tone, and then sends the tone to the PSTN. The way the ITG
handles DTMF tone is so called DTMF relay.
The ITG handles DTMF relay per H.323 specifications. Certain third party VoIP devices
may
handle DTMF relay per IMTC standard. For the ITG to interoperate with those VoIP
devices, users need to specify
which remote VoIP devices uses IMTC conforming DTMF
relay technique. Refer to CLI command
on Chapter 8 for detailed information on how
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.
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ITG User’s Guide
Chapter 4 Configuring ITG from a Web Browser
This chapter explains procedures for configuring the ITG from the web browser.
4.1 Http setting mode
This section describes the processes for setting up Internet Telephony Gateway once it has been
installed. Microsoft Explorer version 4 or higher,
or Navigator version 4.5 or higher can be used
in this section to view
and change parameters.
PC Setup
In order to configure the ITG, PC needs to have TCP/IP protocol and a compatible IP Address.
1. Connect the ITG to network with a RJ-45 UTP cable. Power it on.
2. Find a PC, for example, Windows 95/98. Under Windows 95/98, select the Network
Neighborhood icon on the desktop, then select Properties . We will see a screen like below:
3. If a line like the one highlighted ("TCP/IP -> Network Card”) is not listed , select A dd-
Protocol-Microsoft-TCP/IP-OK
to add it.
4. Select Properties for the “TCP / IP -> Network card” entry. You will see a screen like the
following:
5. On the IP Address table, enter values as follows:
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ITG User’s Guide
‧ Specify an IP address set ON.
‧ IP Address : 192.168.0.2
‧ Subnet Mask : 255.255.255.0
Restart your PC and Start your WEB browser.
6. In the Address box, enter the following:
HTTP://192.168.0.1 (This is a default IP in the gateway from factory)
7. Press enter to confirm and you should find the screen below.
8. The User Name is eitg (all lower case) . P assword is 123 . Both eitg and 123 are default strings
from factory. For security reasons, please change and memorize the new password after this first
setup.
9. Click “OK”. The main screen will appear as b e l o w .
Main Menu Function Briefings
1.Dial Plan Settings, which helps you configure the dial plan. You should complete the dial plan
work sheets before working on this menu.
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ITG User’s Guide
2.View System Configurations, which includes the specific information related to version,
network, H.323, coder, and the channel of the gateway you are using.
3.Configure System Settings, which allows you to modify the system parameters as you wish.
Select Main Menu\Dial Plan Settings , we can find the following Dial Plan Menu.
Dial Plan Settings Function Briefings
1.Telephone Settings, which allows one to Add, Delete, Find, or List telephone numbers.
2.Hunt Group Settings, which allows one to Add, Delete, Find, or List hunt group settings
3.Destination Settings, which allows one to Add, Delete, Find, or List destination settings
4.Common Parameter Settings, which defines the desired total dial time, first digit wait time,
inter-digit wait time, and the termination digit.
5.Clear All Entries, which clears all telephone numbers, hunt groups, and destinations settings,
for both old and new ones
6.Restore All Entries, which retrieves all dial plan settings from the flash, temporary settings will
be cleared
7.Store Settings To Flash, which stores all settings that you have specified permanently.
To ensure your new settings are actually accepted, please check the configuration page carefully
after your submit the new settings. If the new settings are not present, it probably conflicts with
the old settings. Or, there is not enough space for storing your settings.
Please select Main Menu\Dial Plan\Phone/Hunt Group/Destination Settings, we can find
Phone/Hunt Group/Dest . Setting Menu
. We are doing ITG telephone address table
management.
20 Configuring ITG from a Web Browser