TRENDnet TVP- 221H, VoIP Gateway User Manual
TVP-221H 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.
Copyright Statement
No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, whether electronic, mechanical,
photo copying, recording, or otherwise without the prior writing of the
publisher.
May. 2005
2
TVP-221H User’s Guide
How to Use This Manual
This manual was designed for the non-technical users of the VoIP Gateway (TVP221H). It contains information about the functions of the TVP-221H and
instructions for its installation, basic configuration and operation. Read this
section carefully for important information about the manual’s organization.
Important Safety Instructions
Before you plug the TVP-221H 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 TVP-221H away from all chemicals and sources of liquids.
Warning
• Connection of the RJ45 connector from a TVP-221H to TNV circuits can
• Incorrectly connecting telephony devices to the RJ11 port on the
cause permanent damage to the TVP-221H.
Telephony Interface Module
can cause permanent damage to the module.
3
TVP-221H 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
DTMF
FXO
FXS
H.323
ICMP
IMTC
IP
TVP-221H
TVP-224HR
KTS
LAN
Address Translation and Parsing Manager
Command Line Interface
Digital Signal Processor
Dual Tone Multi-Frequency
Foreign Exchange Office
Foreign Exchange Station
ITU specification for multimedia transmission over IP
networks
Internet Control Message Protocol
International Multimedia Telecommunications
Consortium
Internet Protocol
4-port VoIP Gateway
4-port VoIP Gateway Router
Key Telephone System
Local Area Network
NVS
LED
PBX
PSTN
RTP
TCID
TFTP
TIM
TNV
UDP
UTP
VAD
WAN
Non-Volatile Storage
Light Emitting Diode
Private Branch Exchange
Public Switched Telephone Network
Real-Time Transport
Telephony Channel Identifier
Trivial File Transfer Protocol
Telephony Interface Modules
Telephone Network Voltage
User Datagram Protocol
Unshielded Twisted Pair
Voice Activity Detection
Wide Area Network
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TVP-221H 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 TVP-221H 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
5
TVP-221H User’s Guide
Table of Contents
How to Use This Manual ..........................................................................................................3
Important Safety Instructions.................................................................................................. 3
Documentation Abbreviations .................................................................................................4
Notation Conventions................................................................................................................5
CHAPTER 1 .........................................................................................10
OVERVIEW ...........................................................................................10
1.1 Features........................................................................................................................10
1.2 Networking Protocols.................................................................................................. 10
1.3 Package Contents ........................................................................................................11
1.4 Front Panel...................................................................................................................11
LED Indicators ...................................................................................................................... 11
Reset Button .......................................................................................................................... 12
1.5 Rear Panel....................................................................................................................12
LAN / Console Ports .............................................................................................................13
CHAPTER 2 .........................................................................................14
INSTALLING THE TVP-221H.............................................................14
2.1 Network Requirements............................................................................................... 14
2.2 Installing the TVP-221H.............................................................................................14
2.3 Connecting to the telephony devices..........................................................................14
2.4 Connecting to the Network.........................................................................................14
2.5 Providing Power to the TVP-221H............................................................................ 15
2.6 Assigning an IP address to the TVP-221H................................................................15
CHAPTER 3 .........................................................................................16
TVP-221H TELEPHONY CONCEPTS .................................................16
3.1 How the TVP-221H Operates.....................................................................................16
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TVP-221H User’s Guide
3.2 ATPM...........................................................................................................................16
3.3 Destination...................................................................................................................16
3.4 Hunt Group..................................................................................................................17
3.5 Dial Plan.......................................................................................................................17
3.51 Address Table............................................................................................................ 17
3.52 Hunt Group Table...................................................................................................... 18
3.53 Destination Table ...................................................................................................... 18
3.6 DTMF Relay ...............................................................................................................18
3.7 Voice Codecs................................................................................................................ 19
CONFIGURING TVP-221H FROM A WEB BROWSER ........................20
4.1 HTTP setting mode .....................................................................................................20
PC Setup................................................................................................................................ 20
Main Menu Function Briefings ............................................................................................. 22
System Status ........................................................................................................................23
4.2 Internet Access.............................................................................................................23
Fixed IP – Connection Details .............................................................................................. 24
DHCP Client ......................................................................................................................... 25
PPPoE.................................................................................................................................... 25
Dynamic DNS ....................................................................................................................... 26
Dynamic DNS Screen ...........................................................................................................26
4.3 H.323 Configuration....................................................................................................27
H.323 Status Page .................................................................................................................27
H.323 Parameters .................................................................................................................. 28
Gatekeeper............................................................................................................................. 29
Aliases ................................................................................................................................... 31
4.4 Dial Plan Settings ........................................................................................................32
Dial Plan Setup...................................................................................................................... 32
Telephone Number Table...................................................................................................... 32
Hunt Group Table ................................................................................................................. 33
Destination ID Table ............................................................................................................. 34
4.42 Dial in PLAR / CID..................................................................................................... 35
Dial in PLAR Considerations and Limitations...................................................................... 36
4.43 Store Dial Plan.............................................................................................................36
4.44 Clear Dial Plan ............................................................................................................37
4.45 Restore Dial Plan.........................................................................................................37
4.5 Line Settings.................................................................................................................37
Channel Status....................................................................................................................... 37
Codec Selection..................................................................................................................... 37
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TVP-221H User’s Guide
Common Parameters ............................................................................................................. 37
Total Time............................................................................................................................. 38
First Digit Wait Time ............................................................................................................ 38
Inter Digit Wait Time............................................................................................................ 38
Termination Digit.................................................................................................................. 38
4.6 Channel Parameters.................................................................................................... 38
4.7 Administration............................................................................................................. 38
Administration Password Setup / Login................................................................................ 39
Remote Administration ......................................................................................................... 40
Upgrading Firmware Using the Web Browser...................................................................... 41
Interface Speed...................................................................................................................... 43
4.8 Channel Status............................................................................................................. 43
4.9 Help...............................................................................................................................43
CHAPTER 5 .........................................................................................44
MAKING CALLS WITH TVP-221H .....................................................44
5.1 Configuration Examples.............................................................................................44
Default Dial Plan................................................................................................................... 44
5.2 Making a call with TVP-221H FXS Port...................................................................45
5.3 Making a call with TVP-221H FXO Port.................................................................. 46
5.4 Web Browser Sample Dial Plan.................................................................................46
5.5 Making a call between Gateway A and Gateway B..................................................53
Case 1: Gateway Phone to Gateway Phone.......................................................................... 53
Case 2: Gateway Phone to PSTN Phone.............................................................................. 54
Case 3: PSTN Phone to Gateway Phone.............................................................................. 54
5.6 VoIP in a Dynamic IP environment........................................................................... 55
5.7 PPPoE, DHCP, and DDNS clients:............................................................................ 55
Case 4: Gateway Prefix–Simplified Gateway Phone to Gateway Phone............................. 55
5.8 (NAT) router with built-in DDNS client....................................................................61
Case 5: Gateway Prefix-Simplified Gateway Phone to Gateway Phone.............................. 61
Case 6: PLAR (Hotline) FXO to FXS example ................................................................... 71
Case 7: PLAR (Hotline) FXS to FXO example ................................................................... 73
Case 8: PLAR (Hotline) FXO to FXO example................................................................... 74
CHAPTER 6 .........................................................................................77
CONNECTION CONSIDERATIONS.....................................................77
8
TVP-221H User’s Guide
6.1 Port Configuration...................................................................................................... 77
Application 1: Special FXS Connections.............................................................................. 78
Application 2: FXO Connections.......................................................................................... 78
CHAPTER 7 .........................................................................................79
TROUBLESHOOTING TIPS..................................................................79
Appendix A - Technical Specifications..................................................................................81
TVP-221H Technical Specifications..................................................................................... 81
Console Port .......................................................................................................................... 83
LAN Port............................................................................................................................... 83
FXO Port Pin Assignments ................................................................................................... 84
FXS Port Pin Assignments.................................................................................................... 84
Appendix B – Connecting Through Console ........................................................................84
Appendix C – Connecting Through Telnet...........................................................................87
Appendix D – CLI Commands...............................................................................................88
Normal Mode Commands ..................................................................................................... 88
Download Mode Commands................................................................................................. 89
Appendix E - Factory Default Settings.................................................................................. 90
Appendix F - Worksheets....................................................................................................... 92
IP Parameters......................................................................................................................... 92
ATPM Destination Table ...................................................................................................... 92
ATPM Hunt Group Table ..................................................................................................... 94
ATPM Address Table............................................................................................................ 95
9
TVP-221H User’s Guide
Chapter 1
Overview
This chapter gives an overview of the 4 ports desktop version VoIP Gateway (TVP-221H)
and a detailed description of its front panel and rear panel.
1.1 Features
The TVP-221H 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 VoIP Gateway supports up to
four voice or Fax communications simultaneously.
Implemented with an efficient Real-Time Operating System (RTOS) and flash
memory, the TVP-221H 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 TVP-221H utilizes advanced VoIP
related technology. It includes various voice codecs and fax algorithms, echo
cancellation, Voice Activity Detection (VAD) , Comfort Noise Generation
(CNG) , and lost packet recovery algorithms.
1
1.2 Networking Protocols
The TVP-221H 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 TVP-221H
must have a Real IP address, subnet, and gateway assigned
to it.
Voice over IP Protocol
(VoIP)
Trivial File Transfer
Protocol (TFTP)
Real-Time Transport
(RTP)
VoIP enables the TVP-221H to transfer voice
communications over an IP network. The TVP-221H
employs ITU-T H.323 protocol for setting up calls with
one another.
TFTP allows you to transfer files over the network. The
TVP-221H 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 TVP-221H uses RTP protocol to send
digitized and compressed voice packets.
10
TVP-221H User’s Guide
1.3 Package Contents
The contents of your product should contain the following items:
• TVP-221H VoIP Gateway 4 port desk top version
• 100-240V Power Adapter
• 9-pin straight through RS-232 cable
• Printed Quick Installation Guide
• User’s guide (CD)
• RJ45 Cable
1.4 Front Panel
The front panel of the TVP-221H contains a push button and LED indicators. The
following figure illustrates the front panel of the TVP-221H.
4-port TVP-221H Front Panel
LED Indicators
When the TVP-221H 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
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
The LED indicators on the front panel display the current status of the TVP-221H as
described in the following table:
solid on solid on solid on Execution start
on
loader
off off blink off Memory test fail
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TVP-221H User’s Guide
Indicator Color Activity Indication
PWR Green On Power is supplied to the gateway.
SYSTEM Green Blinking The system is running. (Heartbeat LED)
LAN
ACT
100M
LNK
COL
Green
Green
Green
Green
On
On
Off
On
On
Data is being transferred on the 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
Green Off
On
Blinking
The line is idle.
The line is being used.
The line is ringing.
Reset Button
There is a recessed push button located next to the SYSTEM LED. This button
allows you to reset the TVP-221H or force the TVP-221H 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
TVP-221H to enter download mode
1.5 Rear Panel
The rear panel of the TVP-221H has four analog telephony ports, two FXO and
two FXS ports offering flexible telephony interface usage. The FXS telephony
interface ports may be connected to Subscriber Equipment, such as Telephones,
Fax Machines, Cordless Phones, and Modems. FXO ports can be connected to
PBX and local phone company Central Office (CO) lines. In addition to analog
telephony interface ports, there is a power jack for power adapter connection on
the rear panel.
Console
LAN
4-port TVP-221H Rear Panel
FXO FXS
12
12VDC
TVP-221H User’s Guide
LAN / Console Ports
The TVP-221H is equipped with an Ethernet interface with 10/100 Mbps autonegotiation, auto MDIX capability. The Ethernet interface port is located on the
rear panel. In addition to the Ethernet 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 TVP-221H to 10/100
Mbps Ethernet network
9-pin RS-232 User Console Connecting the TVP-221H to a VT-100
terminal or terminal emulator for
configuring the TVP-221H
13
TVP-221H User’s Guide
Chapter 2
Installing the TVP-221H
This chapter gives information on how to install the TVP-221H.
2.1 Network Requirements
For the TVP-221H to successfully operate in your network, your network must
meet the following requirements:
1. A working 10/100 Base-T Ethernet. The TVP-221H connects to the Internet
via an Ethernet LAN.
2. IP network that supports gateway, and subnet mask. You’ll need a static IP
address to assign the TVP-221H or a DDNS account for your Dynamic IP.
2.2 Installing the TVP-221H
Due to the TVP-221H being used in a desktop configuration, ensure that the TVP221H is placed in a clean, well-ventilated, and vibration-free environment.
2
When the TVP-221H 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 TVP-221H for good ventilation.
2.3 Connecting to the telephony devices
The 4 port TVP-221H supports 2 FXO and 2 FXS. Each RJ11 port is for
connecting to telephony devices.
The FXO port is designed for connecting to PBXs or local telephone company
central office switches (CO).
The FXS port is designed for connecting to analog telephone sets, G3 fax
machines.
Warning: connection of incorrect telephony devices to the ports on the TIM can
cause permanent damage to the TIM and/or the TVP-221H.
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 connections, but use Category 5 for 100 Mbps connections.
TVP-224 supports PPPoE and DDNS so it can be connected directly to your Cable
/ ADSL modem, or under a Router. The first time you connect the TVP-221H for
configuration, you will need to connect to it under the same LAN segment to set
the Fixed IP or DHCP, PPPoE clients. To configure the TVP-221H, insert one end
of the Ethernet cable into the RJ45 port on the rear panel of the TVP-221H and
other end directly to your PC Terminal. The TVP-221H supports auto MDIX so
14
TVP-221H User’s Guide
you do not have to worry about the cable. Any Cat 3 or 5 cable will be sufficient.
Once Internet Access has been set up, disconnect the TVP-221H from configuring
PC and connect it directly to your ADSL Cable Modem or place it under a router
as configured.
2.5 Providing Power to the TVP-221H
To provide power to the TVP-221H complete the following steps:
1. Connect one end of the power cord that came with the TVP-221H to the
power jack on the rear panel.
2. Connect the other end of the power cord to an AC power outlet.
3. The TVP-221H will execute memory and application code testing
automatically.
2.6 Assigning an IP address to the TVP-221H
The IP address is the unique logical address identifying each IP node, such as the
TVP-221H, 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 TVP-221H can be
configured with a fixed IP address, subnet mask and default gateway (typically a
router). The TVP-221H can also be setup as a DHCP Client if your network has a
DHCP Server (typically a router). Additionally, the TVP-221H can also be
configured to use PPPoE. With PPPoE, you will have a Dynamic IP but combined
with Dynamic DNS, the TVP-221H will automatically notify DynDNS of your
changing IP Address and DynDNS will in turn, map it to your registered Domain
Name. Consult your network manager to obtain a unique and static IP address for
the TVP-221H, the IP subnet mask and default gateway of your network, and fill
out the work sheet in Appendix D before configuring the gateway. Procedures for
assigning IP address, default gateway and subnet mask is available in Chapter 4.
The first time you connect the TVP-221H for configuration, you will need to
connect to it under the same LAN segment to set the Fixed IP or DHCP, PPPoE
clients. To configure the TVP-221H, insert one end of the Ethernet cable into the
RJ45 port on the rear panel of the TVP-221H and other end directly to your PC
Terminal. The TVP-221H supports auto MDIX so you do not have to worry about
the cable. Any Cat 3 or 5 cable will be sufficient. Once Internet Access has been
set up, disconnect the TVP-221H from the configuring PC and connect it directly
to your ADSL Cable Modem or place it under a router as configured.
15
Chapter 3
TVP-221H Telephony
Concepts
The TVP-221H 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 TVP-221H Operates
1. The TIM inside the TVP-221H digitizes analog voice signals at 8 Kbps.
2. TVP-221H system software handles the:
• Capture of telephone number presented as DTMF tones.
• Mapping the telephone number to the IP address of remote VoIP
Gateway.
3
• Setting up calls with remote TVP-221Hs utilizing H.323 call control
protocol.
• 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 VoIP Gateway at the remote.
4. The process is reversed at the remote VoIP Gateway.
3.2 ATPM
To allow you to easily dial a telephone or fax on the network, the TVP-221H
maps a series of dialed digits to the IP address of the remote TVP-221H whose
phone or fax you are calling. This mapping information is contained in a database
inside each TVP-221H called the dial plan.
Based on the dial plan, the Address Translation and Parsing Manager (ATPM)
inside the TVP-221H maps telephony numbers to IP addresses of remote VoIP
Gateways. 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 to a remote TVP-221H /
TVP-224HR. When the call is set up to the destination, a sub-string of the original
dial string will be sent along to the remote VoIP Gateway.
3.3 Destination
The destination is where a call is terminated. Typically, for inbound calls from the
IP network, the TVP-221H terminals the call at one of the telephony ports. The
16
TVP-221H User’s Guide
destination for the call is the telephony port where the call terminated. For calls
initiated from telephony ports, the TVP-221H forwards the call to a remote TVP221H/TVP-221H via IP network, and the remote TVP-221H/TVP-221H
terminates the call. The destination of the call is the remote TVP-221H/TVP224HR.
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.
support group of a company 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 TVP-221H 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 assign a unique hunt group number to a single destination.
In effect, the Hunt Group will just have this one member.
For example, the customer
3.5 Dial Plan
The dial plan is a database inside the TVP-221H that allows the ATPM to map
telephone numbers dialed to IP addresses of remote VoIP Gateways. The dial plan
consists of three tables; destination table, hunt group table and the address table.
Users need to setup these tables in order for the TVP-221H to process calls to
remote VoIP Gateways.
3.51 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 starts address
lookup.
• The maximum number of digits the ATPM collects before it considers the
dial string is complete.
• Number of digits forwarded to the destination.
17
• Address table sample:
TVP-221H User’s Guide
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
Min.
Digits
Max. Digits Prefix
strip
Prefix
Address
3.52 Hunt Group Table
The hunt group table maps a hunt group to a list of destinations. Hunt group
sample
Hunt Group ID Hunt Type # of Dest ID(s) Dest. ID(s)
1 2 1 1
3 2 1 3
4 2 1 4
11 2 1 11
3.53 Destination Table
The destination table maps a destination to a telephony port or the IP address of a
remote TVP-221H.
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 TVP-221H before it is sent across the IP
network and then decompressed by the destination VoIP gateway. The voice
codecs supported by the TVP-221H 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 cognizable on the receiving end. To
overcome the shortcoming that the voice codecs may have encoding DTMF tone,
the TVP-221H encodes DTMF tone into special packets. The packets are then sent
to the destination VoIP Gateway via a separate IP connection. The destination
VoIP Gateway decodes the packets, generates the DTMF tone, and then sends the
18
TVP-221H User’s Guide
tone to the PSTN. This method in which the TVP-221H handles DTMF tone is so
called DTMF relay.
The TVP-221H handles DTMF relay per H.323 specifications. Certain third party
VoIP devices may handle DTMF relay per IMTC standard. For the TVP-221H to
interoperate with those VoIP devices, users need to specify which remote VoIP
devices uses IMTC conforming DTMF relay technique. Refer to CLI command
Error! Reference source not found. on Chapter 8 for detailed information on how
to select DTMF relay mode.
3.7 Voice Codecs
Voice codecs supported by the TVP-221H include G.711, G.723.1 5.3kbps,
G.723.1 6.3kbps and G.729 AB. When setting up a call, two VoIP Gateways
automatically negotiate with each other until an agreement on codec is
determined.
19
TVP-221H User’s Guide
Chapter 4
4
Configuring TVP-221H from
a Web Browser
This chapter explains procedures for configuring the TVP-221H from a web browser.
4.1 HTTP setting mode
This section describes the processes for setting up the VoIP Gateway once it has been
installed. Java enabled browsers including 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 TVP-221H, the Terminal PC needs to have TCP/IP protocol
and a compatible IP Address.
1. Connect the TVP-221H to the network with a RJ-45 UTP cable. Power it on.
2. To configure a PC under Windows 95/98, select the Network Neighborhood icon
on the desktop, then select Properties. You will see a screen like below:
3. If a line like the one highlighted ("TCP/IP -> Network Card”) is not listed , select
Add-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:
20
5. On the IP Address table, enter values as follows:
• 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 the default IP in the gateway from factory)
7. Press enter to confirm and you should find the screen below.
TVP-221H User’s Guide
8. The User name is admin (all lower case) . Password is 123. Both admin 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 ow .
21
TVP-221H User’s Guide
Main Menu Function Briefings
Home
H.323 Configuration
Dial Plan Settings
Line Settings
Administration
Status
Help
Manual
View System Status
Set H.323 Parameters
Links to dial plan setting / entry / store /
clear / restore pages. You should
complete the dial Plan work sheets
before working in this menu.
Set Line Settings including Channel
Status, Codec Selection, Common
Parameters, Channel Parameters and
Telephony Ports
Set Password, Telnet Access, Interface
Speed
View current System Status
Definitions of Graphical User Interface
Terms and Parameters for Dial Plan
Setup, H.323 Configurations, DDNS
Link to Trendware FTP Website, online
user manual and support materials.
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TVP-221H User’s Guide
System Status
Select Home
In order to view the System Status page, please navigate to Home.
The System Status page will display the following parameters:
Firmware Version
• TVP-221H VoIP Gateway Version:
• Boot Loader Version:
• RTOS Version:
• H.323 Stack Version:
• DSP image Version:
• TSG Version:
LAN Interface Parameters
• IP precedence:
• Ethernet MAC address:
• IP address:
• Subnet mask:
• Default gateway:
4.2 Internet Access
The TVP-221H can be configured with a fixed IP address, subnet mask and
default gateway (typically a router). The TVP-221H can also be setup as a DHCP
Client if your network has a DHCP Server (typically a router). Additionally, the
TVP-221H can also be configured to use PPPoE. With PPPoE, you will have a
Dynamic IP but combined with Dynamic DNS, the TVP-221H will automatically
notify DynDNS of your changing IP Address and DynDNS will in turn, map it to
your registered Domain Name. Consult your network manager to obtain a unique
and static IP address for the TVP-221H, the IP subnet mask and default gateway
of your network, and fill out the work sheet in Appendix D before configuring the
gateway..
The first time you connect the TVP-221H for configuration, you will need to
connect to it under the same LAN segment to set the Fixed IP or DHCP, PPPoE
clients. The default TVP-221H IP address is 192.168.0.1. To configure the TVP221H, insert one end of the Ethernet cable into the RJ45 port on the rear panel of
the TVP-221H and other end directly to your PC Terminal. The TVP-221H
supports auto MDIX so you do not have to worry about the cable. Any Cat 3 or 5
cable will be sufficient. Once Internet Access has been set up, disconnect the
TVP-221H from the configuring PC and connect it directly to your ADSL Cable
Modem or place it under a router as configured.
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TVP-221H User’s Guide
Fixed IP – Connection Details
If you are using a Fixed IP, you are either using a fixed IP as assigned by your ISP or
your Systems Administrator. Please enter your Fixed IP as designated by your ISP along
with Subnet Mask and Default Gateway. If you have a locally assigned Fixed IP, please
talk with your Systems Administrator.
Data - Fixed IP address Screen
Internet
Physical
Address
IP Address
Network
Mask
Default
Gateway
IP TOS Fill in and “IP TOS” parameter for ‘Precedence’, ‘Delay’,
DNS IP
Address
DHCP
Client
The hardware address of this device, as seen by remote
devices on the Internet. (This is different to the hardware
address seen by devices on the local LAN.)
This address is allocated by your ISP (Internet Service
Provider) or System Administrator (if it is a local IP, the IP
must be in the same segment as your Gateway & Router)
The Network Mask associated with the IP Address above.
The IP Address of the remote Gateway or Router associated
with the IP Address above.
‘Throughput’ and ‘Reliability’ if your ISP provides these
features.
The IP Address of the Domain Name Server which is
currently used.
This will show "Enabled" or "Disabled", depending on
whether or not this device is functioning as a DHCP client.
If "Enabled" the "Remaining lease time" field indicates when
the IP Address allocated by the DHCP Server will expire. The
lease is automatically renewed on expiry; use the "Renew"
button if you wish to manually renew the lease immediately.
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DHCP Client
If you will be using the DHCP with a DHCP server on your local LAN
1. Select Yes
2. Click on OK
3. Click on Reboot for changes to take effect
PPPoE
TVP-221H User’s Guide
If you will be using the PPPoE as assigned my your ISP
1. Select Yes
2. Enter Service name, User Name and Password as provided by your ISP
3. Click on OK
4. Click on Reboot for changes to take effect
Note: If you are assigned a Dynamic IP, you will have to register for a DDNS (Dynamic
Domain Name Server). See 4.23 for details
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TVP-221H User’s Guide
Dynamic DNS
It allows Internet users to connect to your gateway using a static URL, rather than an IP
Address. This is particularly useful because a dynamic IP address, by definition, is
constantly changing making it difficult for internet users to find you.
The Service works as follows:
1. Obtain a free account for the service by registering at
2. www.dyndns.org will automatically notify you confirming your account
information.
3. Return to
your preferred Domain name. It is recommended that you register a name within
the xxxx.dyndns.org hostname.
4. Details of your
must then be entered and saved in the DDNS page of the TVP-221H. The TVP221H will then automatically notify DynDNS of your changing IP Address and
DynDNS will in turn, map it to your registered Domain Name. Internet users will
now be able to easily connect to your Virtual Servers (or DMZ PC) using your
easy to remember Domain name.
http://www.dyndns.org and use the "Create New Host" option to register
http://www.dyndns.org account (Name, password, Domain name)
http://www.dyndns.org.
Dynamic DNS Screen
Select Internet on the main menu, then Dynamic DNS, to see a screen like the following:
Figure 1: DDNS Screen
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Data - Dynamic DNS Screen
DDNS Service
TVP-221H User’s Guide
DDNS Service
DDNS Data
Dyn DNS
User Name
Password/Key
Domain Name
(Hostname)
DDNS Status
You must register for the service at dyndns.org.
Apply for a Domain Name, and ensure it is allocated to you.
Details of your DDNS account (Name, password, Domain name)
must then be entered and saved on this screen.
This device will then automatically ensure that your current IP
Address is recorded by the DDNS Service Provider. (You do
NOT need to use the "Client" program provided by some DDNS
Service providers.)
From the Internet, users will now be able to connect to your Virtual
Servers (or DMZ PC) using your Domain name.
On/Off
Enter your Username for the DDNS Service.
Enter your current password for the DDNS Service.
Enter the domain (hostname) name registered at
For instance, if you registered johnsmith.dyndns.org, please enter
johnsmith
This message is returned by the DDNS Server
Normally, this message should be something like "Update
successful" or "IP address updated".
If the message indicates some problem, you need to connect to the
DDNS Service provider and correct this problem.
www.dyndns.org.
4.3 H.323 Configuration
H.323 Status Page
This page lists all current settings for H.323 Parameters.
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H.323 Parameters
For the most part end users will not be using these functions / features and / or
should use the default settings. For more information please see the Advanced
User Manuals or consult with your Systems Integrator
TVP-221H User’s Guide
Display Name: The default string is “Customer”.
1.
This field is to set the display name information that is carried in the
H.323 setup messages. Up to 48 characters can be entered.
2. Terminal Type: The default value is 60.
This field is to set the H.245 terminal type, which is used as part of the
master/slave determination process of H.245. Typically, setting a value of
less than 50 will force slave operation, and a value of greater than 200 will
force the master operation. For more details, please refer to H.323-related
standard documents.
3. RTP Port Base: The default value is 30000.
This field is to select the starting port number for assignment of RTP and
RTCP ports. According to the H.323 specification, RTP port number
should be even in value, and the RTCP port number should be one greater
than the RTP port. Typically, numbers from 0 to 1023 are reserved on
most systems.
4. Outgoing Fast Start: The default setting is off.
This field is to enable or disable the Fast start mode on the outgoing side
of the link.
5. Incoming Fast Start: The default setting is off.
This field is to enable or disable the Fast start mode on the incoming side
of the link. You'll have to reboot the system to make your changes active!
Frame Rate = 2 frames/packet
6. Auto-Answer: Enables quick H.225 to H.245 transition without waiting
for receiver picking up the phone, default is on
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7. NAT Call Mode: Enables calls from remote sites which use NAT routers
with private IP networks behind, default is on
8. Default DTMF Mode: H323 V2 Signal or IMTC. The default is H323 V2
Signal
9. DNS IP Address
10. Alternate DTMF IP Address
11. DTMF Duration: default is 300
Gatekeeper
This page is home to many specific H.323 Gateway / Gatekeeper functions /
features. For the most part end users will not be using these functions /
features and / or should use the default settings. For more information please
see the Advanced User Manuals or consult with your Systems Integrator
The primary function of the gatekeeper component is to provide address
translation services. This function converts external (telephone number)
addresses and alias (name) addresses to network addresses, allowing users to
maintain the same telephone numbers or alias addresses regardless of changes
to their network addresses.
TVP-221H User’s Guide
1. Gate Keeper Mode: The default setting is off. This field is to select the
co-operation mode with some other gatekeeper(s). Three options are
available:
i. Off: Disables gatekeeper co-operation,
ii. Auto: Enables auto-discovery of the gatekeeper
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TVP-221H User’s Guide
iii. Manual: Enables gatekeeper co-operation in manual
operation (the gatekeeper address must be properly
assigned).
The following fields must be filled in when Gate Keeper Mode is set to
manual.
2. Gate Keeper Address: Specify the gatekeeper address when configured
to manual mode. When auto mode is desired, this field should be set to
auto
3. Allow Calls Without Gate Keeper: This field is to inform the H.323
stack to allow calls when the endpoint is not registered with a gatekeeper.
4. Registration Type: This field is to set the endpoint registration type.
This specifies how the endpoint will register itself with the gatekeeper.
5. Max Registration Retries: This field is to control how many registration
attempts will be made before the endpoint considers itself to have failed
registration.
6. Time To Live: Do not have to set this because GK to perform this
function. Every x seconds will check to see if it is alive
7. Endpoint Prefix: This command is used to set the H.323 prefix that the
TVP-221H uses when registering to an H.323 gatekeeper.
8. Terminal ID: To specify GW’s ID.
9. GateKeeper ID: To specify Gate Keeper’s ID.
You'll have to reboot the system to make your changes take effect!
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