Allied Telesis AT-VP504E FXS Instruction Manual

AT-VP504E FXS (H.323)
Administration Manual
PN 990-11590-10 Rev B
VoIPTalk

Copyright © 2001 Allied Telesyn International, Corp.
960 Stewart Drive S ite B, S nnyvale CA USA 94085
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Contents Administration Manual (H.323 Version)
AT-VP504E FXS iii
Contents
Preface
Welcome to the AT-VP504E FXS .......................................................... vii
Before you Begin........................................................................................................vii
Acronyms....................................................................................................................vii
Chapter 1
Introducing the AT-VP504E FXS............................................................. 1
Overview...................................................................................................................... 1
Why use the AT-VP504E FXS?...............................................................................................1
How does it Work? ..................................................................................................................1
Features ...................................................................................................................... 2
Panels..........................................................................................................................3
Front Indicators........................................................................................................................3
Rear Connections....................................................................................................................4
Interpreting the AT-VP504E FXS LEDs....................................................................... 5
Test LED..................................................................................................................................5
LAN LED..................................................................................................................................5
Power LED ..............................................................................................................................6
LED Behavior in Download Mode............................................................................................6
Chapter 2
Installation................................................................................................ 7
Hardware and Software Requirements ....................................................................... 7
Contents of the AT-VP504E FXS ................................................................................ 7
Choosing a Suitable Location...................................................................................... 8
Mounting the AT-VP504E FXS................................................................................................8
Setting up the AT-VP504E FXS for the First Time .................................................... 13
Using the Default Settings Switch .........................................................................................13
Finding the IP Address Assigned to an AT-VP504E FXS .....................................................17
Installing the AT-VP504E FXS Hardware.................................................................. 19
Chapter 3
Administration........................................................................................ 21
Web Interface............................................................................................................ 21

Contents Administration Manual (H.323 Version)
AT-VP504E FXS iv
Choosing a Suitable Browser................................................................................................21
Accessing the Web Interface.................................................................................................21
Accessing the Administration Web Page...............................................................................23
Integrating the AT-VP504E FXS into the Communication Environment.................... 26
Configuring IP Addresses.......................................................................................... 30
Using a Syslog Daemon........................................................................................................31
Setting up Gatekeeper Information............................................................................ 32
Quality of Service Settings ........................................................................................ 35
Differentiated Services (DiffServ) Section .............................................................................35
802.1q Section.......................................................................................................................37
Configuring Incoming and Outgoing Calls Parameters ............................................. 39
Telephony Settings................................................................................................................40
Accept Phone/Fax to IP Network Call Settings .....................................................................42
IP Network to Phone/Fax Call Settings .................................................................................45
Geographical Specific Configuration ......................................................................... 45
Viewing Hardware Information .................................................................................. 46
Performing a RAM Check......................................................................................................46
Performing a ROM Check .....................................................................................................47
System Failure Bypass Activation Section................................................................ 47
Setting the Bypass Activation ................................................................................................48
Changing the Password/User Name ......................................................................... 48
Chapter 4
How to Use the AT-VP504E FXS........................................................... 51
AT-VP504E FXS Call Processes............................................................................... 51
Calls Involving Another Terminal...........................................................................................52
Calls Involving a Terminal and an H.323 Endpoint................................................................52
Calls Involving a PSTN Gateway...........................................................................................53
Calls Without a Gatekeeper (Direct Calls).............................................................................54
What is a Dialing Rule? ............................................................................................. 55
General Dialing Rules............................................................................................................55
IP Address Specific Rules .....................................................................................................58
Dialing Rules Examples............................................................................................. 59
Example 1..............................................................................................................................59
Example 2..............................................................................................................................60
Chapter 5
Software Upgrade ..................................................................................63
Setting up Software Download.................................................................................. 63
Downloading a New Software Version..................................................................................63
Emergency Software Download Configuration Section............................................. 65
Using the Emergency Software Procedure ...........................................................................66

Contents Administration Manual (H.323 Version)
AT-VP504E FXS v
Chapter 6
Maintenance ...........................................................................................69
Warning..................................................................................................................... 69
Caution Regarding Handling ..................................................................................... 69
Location.................................................................................................................................69
Condensation ........................................................................................................................69
Cleaning ................................................................................................................................69
Troubleshooting......................................................................................................... 69
Solving General Operation Problems ....................................................................................70
Solving Web Interface Problems ...........................................................................................71
Solving Software Upgrade Problems.....................................................................................72
Appendix A
DHCP Server Vendor Specific Information.......................................... 75
Configuring the DHCP Server ................................................................................... 75
Network Configuration...........................................................................................................75
Creating Vendor Specific Information....................................................................................76
Appendix B
Country Specific Parameters................................................................ 81
Austria ....................................................................................................................... 81
France ....................................................................................................................... 81
Germany.................................................................................................................... 82
Great Britain .............................................................................................................. 83
Italy............................................................................................................................ 83
Japan......................................................................................................................... 84
North America............................................................................................................ 84
Spain ......................................................................................................................... 85
Switzerland................................................................................................................ 86
Appendix C
Gatekeeper Registration Logic............................................................. 87
No Gatekeeper Registration...................................................................................... 87
Messages Exchanged ............................................................................................... 87
Registration with a Gatekeeper ................................................................................. 88
Lightweight Registration............................................................................................ 90
Examples................................................................................................................... 91

Contents Administration Manual (H.323 Version)
AT-VP504E FXS vi
Registering with the Gatekeeper ...........................................................................................91
Unregistration Request from a Gatekeeper...........................................................................91
Gatekeeper Unreachable ......................................................................................................92
Appendix D
Glossary.................................................................................................. 95

AT-VP504E FXS vii
PWelcome to the AT-VP504E FXS
The AT-VP504E FXS provides multiplexed IP connectivity for up to
four analog telephones or fax machines to a Local Area Network with
access to an Intranet or the Internet to permit high-quality, full duplex,
audio/fax communications over IP Packet Networks.
Before you Begin This manual provides all the information needed to install and manage
the AT-VP504E FXS with the configurationwebpages. It is intended to
be used by network administrators who install and set up network
equipment; consequently, it assumes a basic working knowledge of
LANs (Local Area Networks).
From the perspective of the LAN administrator, an AT-VP504E FXS
presents itself just like another PC that is to be added to the LAN. It
requires the same kind of TCP/IP addressing that is required by a PC.
The AT-VP504E FXS can also use a DHCP server on the LAN to
automatically receive its IP configuration assignment.
Acronyms
DHCP Dynamic Host Configuration Protocol
DNS Domain Name Server
DSP Digital Signal Processor
FXS Foreign Exchange Service
IP Internet Protocol
LAN Local Area Network
LED Light Emitting Diode
MAC Media Access Control
Mb/s Megabits per Second
PBX Private Branch Exchange
PCM Pulse Code Modulation
PROM Programmable Read-Only Memory
PSTN Public-Switched Telephone Network
TCP/IP Transmission Control Protocol/Internet Protocol

Preface - Welcome to the AT-VP504E FXS Administration Manual (H.323 Version)
AT-VP504E FXS viii
TFTP Trivial File Transfer Protocol
VoIP Voice Over Internet Protocol
WAN WideAreaNetwork

AT-VP504E FXS 1
1Introducing the AT-VP504E FXS
This chapter introduces the AT-VP504E FXS. It describes the
AT-VP504E FXS’s features and illustrates its frontpanel indicators and
back panel connectors.
Overview The AT-VP504E FXS is an IP telephony adaptor that connects up to
four (4) analog terminals to a LAN with access to an IP Network,
allowing high-quality, full duplex, audio/fax communication.
This version of the AT-VP504E FXS uses the H.323 protocol, which is
a standard for audio/video conferencing over networks.
Why use the
AT-VP504E
FXS?
There are many reasons to use the AT-VP504E FXS:
 Merges voice and data traffic onto a single unified
network.
Carrying telephone traffic over data networks uses less
bandwidth (as compared to telephone trunks), resulting in a
more cost-effective network solution.
 Easily integrates with existing telephone equipment.
Overhead is minimal, because the AT-VP504E FXS fully
utilizes your existing telecommunications equipment and
computer networks.
 Bypasses long-distance toll charges for realized savings.
 Supports 10 Mb/s and 100 Mb/s Ethernet networks.
 Upgrades software easily for future enhancements.
 Uses the latest standards in Internet Telephony.
 Supports the following Codecs:
• G.711 (µ-law, A-law)
•G.729A
• G.723.1 (5.3 kbps and 6.4 kbps)
 Supports Quality of Service technologies.
• Differentiated Services (DS) Field
• IEEE 802.1q user priority tagging
How does it
Work? When an Internet telephony call is placed from one location to another, the voice signals pass through the AT-VP504E FXS connected to the
handset in the caller’s area. They are compressed into data packets,
which are then diverted by the AT-VP504E FXS onto an IP/data

Chapter 1 - Introducing the AT-VP504E FXS Administration Manual (H.323 Version)
AT-VP504E FXS 2
network such as the Internet, or another type of data network. Upon
reaching its destination, the voice data is converted back into voice
signals, then fed into the corresponding telephone or fax machine.
The AT-VP504E FXS system utilizes technology that optimizes
available bandwidth, so users do not hear echoes, stops and starts, or
annoying clicks and pops. When traffic congestion is properly
managed, AT-VP504E FXS customers cannot tell that their
conversation is being carried over a packet network rather than the
traditional PSTN.
See “AT-VP504E FXS Call Processes” on page 51 for more details on
AT-VP504E FXS call processes and examples.
Features Table 1 lists some of the features the AT-VP504E FXS offers.
Table 1: AT-VP504E FXS’s Features
Feature Description
4 FXS Port Four central office quality subscriber’s line interface
circuits (SLICs) supporting all the BORSCHT (Battery
feed, Over-voltage protection, Ringing, Signaling,
Coding, Hybrid, and Testing) functions and thus meet
most world wide telephony standards.
Fax Interface Handles G3 and Super G3 fax transmissions at speeds
up to 33.6 kbps. Automatic fax mode detection is
standard.
Analog
Modem Supports 9.6 to 33.6 kbps analog modems (V.34 support over clear channel).
Note: If an incoming modem call is at 56.6 kbps,
negociating will occur, then transmissions errors.
Compliant
with H.323
FastConnect
The H.323 FastConnect procedure is an enhancement
feature introduced in the H.323v2 protocol to reduce the
initialisation latency when initiating a call. To operate in
FastConnect mode, all H.323 elements (calling party,
caller party, gatekeeper) involved in the call setup activity
must comply to the FastConnect procedure. Otherwise,
the normal initialisation procedure takes place.