Allied Telesis AT-VP504E FXS Instruction Manual

AT-VP504E FXO (H.323)
Administration Manual
PN 990-11592-10 Rev C
VoIPTalk

Copyright © 2001 Allied Telesyn International, Corp.
960 Stewart Drive S ite B, S nnyvale CA USA 94085
All rights reserv ed. No part of this p blication may be reprod ced w itho t prior written permission from Allied
Telesyn International, Corp.
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Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information
contained in thi s doc ment witho t prior written notice. The information provided herein is s bject to change witho t
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conseq ential damages whatsoever, incl ding b t not limited to lost of profit, arising o t of or related to this man al
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have known, the possibility of s ch damages.

Contents Administration Manual (H.323 Version)
AT-VP504E FXO iii
Contents
Preface
Welcome to the AT-VP504E FXO.......................................................... vii
Before you Begin........................................................................................................vii
Acronyms....................................................................................................................vii
Related Documentation.............................................................................................viii
Chapter 1
Introducing the AT-VP504E FXO ............................................................ 1
Overview...................................................................................................................... 1
Why use the AT-VP504E FXO? ..............................................................................................1
How does it Work? ..................................................................................................................2
Features ...................................................................................................................... 2
Panels..........................................................................................................................3
Front Indicators........................................................................................................................3
Rear Connections....................................................................................................................4
Interpreting the AT-VP504E FXO LEDs ...................................................................... 5
Interpreting the Ready LED.....................................................................................................5
Interpreting the In Use LED.....................................................................................................5
Interpreting the LAN LED ........................................................................................................6
Interpreting the Power LED .....................................................................................................6
LED Behavior in Download Mode............................................................................................7
Chapter 2
Installation................................................................................................ 9
Hardware and Software Requirements ....................................................................... 9
Unpacking the AT-VP504E FXO................................................................................. 9
Choosing a Suitable Location.................................................................................... 10
Mounting the AT-VP504E FXO .............................................................................................10
Installing the AT-VP504E FXO for the First Time...................................................... 15
Using the Default Settings Switch .........................................................................................15
Finding the IP Address Assigned to a AT-VP504E FXO.......................................................19
Installing the AT-VP504E FXO Hardware ................................................................. 21

Contents Administration Manual (H.323 Version)
AT-VP504E FXO iv
Chapter 3
Administration........................................................................................ 23
Web Interface............................................................................................................ 23
Choosing a Suitable Browser................................................................................................23
Accessing the Web Interface.................................................................................................23
Accessing the Configuration Web Page................................................................................25
Integrating the AT-VP504E FXO into the Communication Environment................... 28
Configuring IP Addresses.......................................................................................... 32
Using a Syslog Daemon........................................................................................................33
Setting up Gatekeeper Information............................................................................ 34
Quality of Service Settings ........................................................................................ 37
Differentiated Services (DiffServ) Section .............................................................................37
802.1q Section.......................................................................................................................39
Configuring Incoming and Outgoing Calls Parameters ............................................. 41
Telephony Settings................................................................................................................43
PSTN to IP Network Call Settings .........................................................................................44
IP Network to PSTN Call Settings .........................................................................................48
Analog Telephone Line Type Setting ....................................................................................48
Geographical Specific Configuration ......................................................................... 48
Viewing Hardware Information .................................................................................. 49
Performing a RAM Check......................................................................................................50
Performing a ROM Check .....................................................................................................50
Changing the Password/User Name ......................................................................... 50
Chapter 4
How to Use the AT-VP504E FXO .......................................................... 53
AT-VP504E FXO Call Processes .............................................................................. 53
Types of Calls........................................................................................................................53
What is a Dialing Rule? ............................................................................................. 55
General Dialing Rules............................................................................................................55
IP Address Specific Rules .....................................................................................................59
Dialing Rules Examples............................................................................................. 60
Example 1..............................................................................................................................60
Example 2..............................................................................................................................61
Chapter 5
Software Upgrade ..................................................................................63
Setting up the Software Download............................................................................ 63
Downloading a New Software Version..................................................................................63
Emergency Software Configuration Section.............................................................. 65

Contents Administration Manual (H.323 Version)
AT-VP504E FXO v
Emergency Software Procedure............................................................................................66
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.......................................... 73
Configuring the DHCP Server ................................................................................... 73
Network Configuration...........................................................................................................73
Creating Vendor Specific Information....................................................................................74
Appendix B
Continent Specific Parameters............................................................. 79
Australia Parameters................................................................................................. 79
Austria Parameters.................................................................................................... 79
France Parameters.................................................................................................... 80
Germany Parameters ................................................................................................ 80
Great Britain Parameters........................................................................................... 81
Italy Parameters ........................................................................................................ 82
Japan Parameters ..................................................................................................... 82
North America Parameters........................................................................................ 83
Spain Parameters...................................................................................................... 84
Switzerland Parameters ............................................................................................ 84
Appendix C
Gatekeeper Registration Logic............................................................. 85
No Gatekeeper Registration...................................................................................... 85
Messages Exchanged ............................................................................................... 85

Contents Administration Manual (H.323 Version)
AT-VP504E FXO vi
Registration with a Gatekeeper ................................................................................. 86
Lightweight Registration............................................................................................ 88
Examples................................................................................................................... 89
Registering with a Gatekeeper ..............................................................................................89
Unregistration Request from a Gatekeeper...........................................................................89
Gatekeeper Unreachable ......................................................................................................90
Appendix D
Glossary.................................................................................................. 93

AT-VP504E FXO vii
PWelcome to the AT-VP504E FXO
The AT-VP504E FXO is an H.323 Gateway that connects up to four
PSTN lines 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. This way, the AT-VP504E FXO acts as a
Gateway for bridged communications.
Before you Begin This manual provides all the information needed to install and manage
the AT-VP504E FXO with the configuration web pages. It is intended
for 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 FXO
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 FXO 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
FXO Foreign Exchange Office
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

Preface - Welcome to the AT-VP504E FXO Administration Manual (H.323 Version)
AT-VP504E FXO viii
Related Documen-
tation In addition to this Manual, each document set of the AT-VP504E FXO
includes the following:
 AT-VP504E FXO Quick Start booklet
This printed booklet allowsyou to quickly setup and work with
the AT-VP504E FXO.
TCP/IP Transmission Control Protocol/Internet Protocol
TFTP Trivial File Transfer Protocol
VoIP Voice Over Internet Protocol
WAN WideAreaNetwork

AT-VP504E FXO 1
1Introducing the AT-VP504E FXO
This chapter introduces the AT-VP504E FXO. It describes the
AT-VP504E FXO’s main features and illustrates its front panel
indicators and back panel connectors.
Overview The AT-VP504E FXO is an analog gateway that allows connectivity
between the PSTN and a VoIP network. This way, an IP-based
telephony system can be linked to the PSTN world through up to four
(4) standard telephone lines. The AT-VP504E FXO devices are
stackable so the number of telephone lines that are required can be
easily met by adding more devices in the network.
Why use the
AT-VP504E
FXO?
 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 FXO
gateways fully utilize 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.
• H.323 protocol for call management
• Real-Time Transport Protocol (RTP) for voice
streaming
 Supports the following Codecs:
• G.711 (µ-law, A-law)
• 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

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AT-VP504E FXO 2
How does it
Work? The AT-VP504E FXO is a gateway. When a PSTN user contacts the AT-VP504E FXO, the call is answered and a second dial tone (IP dial
tone) is presented to the PSTN user. The number dialed at this
moment will be parsed by the AT-VP504E FXO and used in an H.323
call establishment.
The AT-VP504E FXO contacts an H.323 compliant gatekeeper. The
gatekeeper then looks through its internal database to translate the
dialed number to a corresponding IP address. If none exists, the
gatekeeper will locate a gateway (which can be another AT-VP504E
FXO) for placing the call on the PSTN.
When an Internet telephony call is placed from one location to another,
the voice signals pass through the AT-VP504E FXO. They are
compressed into data packets, which are then diverted by the
AT-VP504E FXO onto an IP/data network such as the Internet, or
another type of data network. Upon reaching its destination, the data is
converted back into voice signals, then fed into the corresponding
endpoint.
The AT-VP504E FXO 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 FXO customers cannot tell that their
conversation is being carried over a packet network rather than the
traditional PSTN.
See“AT-VP504E FXO Call Processes” on page 53 for more details on
AT-VP504E FXO call process and other examples.
Features The following table lists some of the features the AT-VP504E FXO
offers.
Table 1: AT-VP504E FXO’s Features
Feature Description
4 FXO Ports Ports that will act as FX Office (FXO) ports, enabling the
unit to be integrated into many existing telephony
configurations. These ports support both Loop Start and
Ground Start lines.
Fax Interface Handles G3 and Super G3 fax transmissions at speeds
up to 33.6 kbps. Automatic fax mode detection is
standard on all ports.

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AT-VP504E FXO 3
Panels This section provides an overview of the AT-VP504E FXO’s front and
rear panels.
Front Indica-
tors Figure 1 shows the four (4) visual indicators located on the front of the AT-VP504E FXO.
Figure 1: AT-VP504E FXO Front Panel Indicators
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.
Remote Site
Configuration/
Management
The AT-VP504E FXO can be integrated seamlessly into
your existing administration environment. Implementation
of a HTTP server allows device-related adjustment
parameters to be modified and polled remotely. The
software upgrade (CPU and DSP code) is downloaded
via a TFTP server.
Table 1: AT-VP504E FXO’s Features (Continued)
Feature Description
Port In Use
indicator LAN link pulse indicator Power ON indicator
Registered with
Gatekeeper indicator

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AT-VP504E FXO 4
The following table describes the LEDs on the front panel of the
AT-VP504E FXO.
Rear Connec-
tions Figure 2 shows the back panel connectors of the AT-VP504E FXO.
Figure 2: AT-VP504E FXO Back Panel Connectors
The following table describes the back panel connections.
Table 2: AT-VP504E FXO Indicators
Indicator Description
– Ready –
Registered with
Gatekeeper indicator
When lit, at least one of the FXO ports
configured to be registered with a Gatekeeper
is properly and successfully registered.
–In Use –
Port In Use indicator When lit, at least one of the FXO ports is in use.
–LAN –
LAN link pulse indicator Provides the state of the network connected to the Ethernet port.
–Power –
Power ON indicator When lit, power is applied to the AT-VP504E FXO.
10/100 BaseT Ethernet
RJ-45 connector
FactoryDefault
Settings
PSTN Line (FXO) RJ-11
connectors
UniversalPower
Supply Input
Table 3: AT-VP504E FXO Back Panel Connectors
Connection Description
Ethernet A 10/100 BaseT Ethernet RJ-45 connector for
access to a LAN.

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AT-VP504E FXO 5
Interpreting the
AT-VP504E FXO
LEDs
The AT-VP504E FXO has four (4) LED indicators located on the front
panel, which are identified as Ready, In Use,LAN, and Power.ALED
has three states: On, Off and Blinking.
Interpretingthe
Ready LED The Ready LED provides status of the AT-VP504E FXO ports. Normal operation is steady On.
Interpretingthe
In Use LED The In Use LED provides status on the FXO port use. It iseither On(At least one port is in use) or Off (no port is in use).
Port 1, 2, 3, 4 RJ-11 connectors for access to Standard PSTN
phone lines. Loop Start and Ground Start lines
are supported.
100-250 Vac
120-65 ma ; 50/60 Hz Universal Power Supply input.
Default Settings switch The Default Settings switch resets configuration
parameters of the AT-VP504E FXO to default
(known) values. It can be used to reconfigure
devices. See “Using the Default Settings
Switch” on page 15 for more information.
Table 3: AT-VP504E FXO Back Panel Connectors (Continued)
Connection Description
Table 4: Test LED Status
Operation LED Status Description
Not
registered Steady OFF If the unit is not configured to register with a gatekeeper, no ports are
registered.
Registered Steady ON At least one of the FXO ports
configured to be registered with a
gatekeeper is properly and
successfully registered.
Registration
failed Blinking No FXO port configured to be registered with a gatekeeper is
properly and successfully registered.

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AT-VP504E FXO 6
Interpretingthe
LAN LED This LED provides the status of the network connected to the Ethernet port. Normal operation is variable On-Off blinking.
Interpretingthe
Power LED This LED is used to indicate whether the AT-VP504E FXO is operational at its most basic level. It does not imply that the unit can be
used, only that it is capable of being used. Normal operation is steady
On.
Table 5: Network LED Status
Operation LED Status Description
link_down Steady OFF Ethernet port does not sense the
carrier signal.
link_up Steady ON Only valid for the first 4 seconds after
initial receipt of carrier signal.
link_active Variable
Blinking It is on when data is transmitted or received on the Ethernet port. This
implies that the LINK_UP is also true.
Table 6: Power LED Status
Operation LED Status Description
normal Steady ON Power is on and the unit does not
have any major failure.
failed 3 Hz Blinking at
50% on duty
cycle
Failure of power-up diagnostics such
that the unit is unable to operate.
addr_fail 1 Hz Winking at
75% on duty
cycle
Failure of DHCP – no acceptable
offer received from DHCP. Blinks for
4 seconds.
no_power Steady OFF The unit has no power supply input.

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AT-VP504E FXO 7
LED Behavior
in Download
Mode
When the AT-VP504E FXO initiates a software download, the four
LEDs located on the front panel are used to report the status of the
process:
Table 7: LED States in Software Download
Event LED State
IMAGE_DOWNLOADING
(download phase) Each LED blinks alternately at 1 Hz with 1/3 ON duty cycle.
IMAGE_WRITING
(writing to EEPROM phase) Ready LED ON, In Use LED ON,LAN LED ON, Power LED OFF.
Warning: Do not turn the AT-VP504E
FXO off while in this state.
IMAGE_UPDATE_FAIL All LEDs blink for at the same time at 2
Hz with 50% ON duty cycle for 4
seconds.
IMAGE_UPDATE_SUCCESS All LEDs ON.

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AT-VP504E FXO 8

AT-VP504E FXO 9
2Installation
This chapter lists the hardware and software requirements of the
AT-VP504E FXO. It also describes how to set it up by introducing the
configuration web pages you will be using in the following chapters.
Hardware and
Software Require-
ments
To work properly, the AT-VP504E FXO requires the following items:
Unpacking the
AT-VP504E FXO The package of your AT-VP504E FXO contains the following items:
 the AT-VP504E FXO device(s)
 4 rubber feet for the AT-VP504E FXO
 a power cord for the country in which you willbe using the
AT-VP504E FXO
Table 8: AT-VP504E FXO Required Items
Item Description
Remote Party Endpoints where the AT-VP504E FXO
terminates a call. For example, it could be:
• a standard telephone/fax
attached to a terminal such as
anAT-VP504E FXS, etc.
• a Soft Phone
• an IP phonedirectly connected to
the IP network
•etc.
TFTP Server Necessary for software updates.
DHCP Server This server supplies all network parameters
to the AT-VP504E FXO such as the IP
address and the subnet mask.
Note: The DHCP server is used only for
automatic configuration.
Syslog Daemon (optional) The Syslog daemon receives all status
messages coming from the AT-VP504E FXO.
It keeps the administrator informed of any
warning or error messages sent by the
AT-VP504E FXO.

Chapter 2 - Installation Administration Manual (H.323 Version)
AT-VP504E FXO 10
Choosing a Suita-
ble Location The AT-VP504E FXO is suited for use in an office environment where
it can be wall-mounted, mounted on a standard 48.26 cm (19 in.)
equipment rack, or free standing on its rubber feet. In addition, the
AT-VP504E FXO can be rack-mounted in a wiring closet or equipment
room.
When deciding where to position the AT-VP504E FXO, ensure that:
 The AT-VP504E FXO is accessible and cables can be
easily connected.
 The cabling is away from the following:
• Sources of electrical noise such as radios,
transmitters, and broadband amplifiers
• Power lines and fluorescent lighting fixtures
• Water or moisture that could enter the casing of
the AT-VP504E FXO.
 The airflow is not restricted around the AT-VP504E FXO
or through the vents in the side of the unit. It is necessary
to have a minimum of 25 mm (1 in.) clearance.
Mounting the
AT-VP504E
FXO
Rack-Mounting the AT-VP504E FXO
The AT-VP504E FXO is 5.5 cm (2.2 in.) high and fits in most standard
48.26 cm (19 in.) racks. Allied Telesyn recommends that you use a
rack compliant EIA-310-D.
 To rack-mount the AT-VP504E FXO:
1. Disconnect all of the cables from the AT-VP504E FXO.
2. Remove all of the rubber feet from the AT-VP504E FXO, if
applicable.
3. Place the AT-VP504E FXO right side up on a hard flat
surface, with the front facing toward you.
4. Place the left mounting bracket over the mounting holes on
theleftsideoftheAT-VP504EFXO.Figure 3 on page 11
illustrates the rack-mounting pieces.
Note: The wall-mounting or rack-mounting kit is not part of the
standard AT-VP504E FXO package and must be ordered separately.

Chapter 2 - Installation Administration Manual (H.323 Version)
AT-VP504E FXO 11
Figure 3: Rack mounting pieces
Table 9 describes the rack-mounting pieces illustrated in Figure 3.
B
C
E
F
D
A
Table 9: Rack-Mounting Pieces
Item No. Qty. Description
A 1 AT-VP504E FXO casing
B 1 Right rack-mount bracket (already installed in
Figure 3)
C 1 Left rack-mount bracket
D 4 6-32 5/16 across 7/64 thick steel Hex machine screw
nuts
E 4 6-32 UNC 1/2 steel philips binding head screws
F 4 6 bolt size split lock washers
Note: The left andright mounting brackets arenot identical.Therefore,
make sure that you use the proper bracket.The bracket should be
perfectly aligned with the side of the AT-VP504E FXO.

Chapter 2 - Installation Administration Manual (H.323 Version)
AT-VP504E FXO 12
5. Insert the two screws in the left mounting bracket, and
tighten.
6. Repeat steps 4 and 5 for the other side of the AT-VP504E
FXO.
7. Insert the AT-VP504E FXO into the bracket and secure with
suitable screws (not provided). Make sure that the ventilation
holes are not obstructed.
8. Connect the cabling as per “Installing the AT-VP504E FXO
Hardware” on page 21.
Wall-Mounting the AT-VP504E FXO
A single AT-VP504E FXO can be wall-mounted.
 To wall-mount the AT-VP504E FXO:
1. Disconnect all of the cables from the AT-VP504E FXO before
mounting.
2. Ensure that the wall you are using is smooth, flat, dry and
sturdy. Attach a piece of plywood, approximately 305 mm x
510 mm x 12 mm (12 inches x 20 inches x 0.5 inches)
securely to the wall, if necessary.
3. Position the wall-mounting bracket against the wall (or
plywood) and ensure that one of the sides with two screw
holes faces the sides or the top (see Figure 4 on page 13).
Do not position the sidewith two screw holes downward.
Mark the position of the screw holes on the wall. Drill the two
holes.
Note: You must use the screws supplied with the mounting brackets.
Damage caused to the unit by using incorrect screws invalidates your
warranty.