Panasonic KX-TDA0480 User manual

Model No. KX-TDA0480
4-Channel VoIP Gateway Card
Installation Manual
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Introduction
2 Installation Manual
Introduction
This document provides information and procedures needed to install a network of the KX-
TDA0480. Although the KX-TDA0480 installation process is straightforward, careful
planning will smooth the process and allow for trouble-free expansion and upgrading.
Steps associated with assigning network addresses and creating a network telephone
numbering system should be performed by persons experienced in network administration. For
complex installations, it may be useful to create a diagram of the network similar to those used
in various sections of this document. Planning issues are addressed in Section Planning: of this
document.
In addition to this introduction, this document is organised into the following sections:
•KX-TDA0480 Overview
•Planning
•Physical Installation
•Logical Installation
At the end of this document are appendices that provide detailed information on topics that will
be useful during the planning and installation process.
"Appendix" sections deal with advanced topics related to installing and configuring a IP
Gateway network.
In the case of smaller networks it may not be necessary to refer to these topics. As networks
grow in complexity, these topics will augment the information provided in the main body of
this guide. Additionally, it may be necessary to refer to the KX-TDA0480 Programming Guide.
The last appendix in this section contains worksheet reproduction masters that can be used in
the IP Gateway network planning process.

Table of Contents
Installation Manual 3
Table of Contents
1 KX-TDA0480 Overview
1.1 KX-TDA0480 Overview .................................................................................................6
2Planning
2.1 Basic Configuration Overview ....................................................................................10
2.1.1 H.323 Version 2 Networks ..........................................................................................13
2.1.2 DNS .............................................................................................................................15
2.1.3 G3 Fax .........................................................................................................................15
2.1.4 DTMF Detection .........................................................................................................16
2.2 Worksheets ....................................................................................................................18
2.2.1 Network Worksheets....................................................................................................18
2.2.2 Network Units List Worksheet ....................................................................................18
2.2.3 Connection Information Worksheet ............................................................................21
2.2.4 Common Configuration Worksheet.............................................................................23
2.2.5 Unit Setup Worksheet..................................................................................................27
3 Physical Installation
3.1 Installation Preconditions ............................................................................................42
3.2 Connect Cables .............................................................................................................43
3.3 Connect the Computer Terminal Unit with RS-232C Cable....................................44
3.4 Connect the Network Cable.........................................................................................46
3.5 Power-Up the KX-TDA0480 and Verify Operation...................................................48
4 Logical Installation
4.1 Logical Installation Methods .......................................................................................50
4.2 Maintenance Console Software Overview..................................................................51
4.3 Install Maintenance Console Software .......................................................................52
4.4 Start Maintenance Console Software and Login.......................................................53
4.5 MCS Main Directory Window ....................................................................................54
4.6 Create a New Group.....................................................................................................56
4.7 Create New Units..........................................................................................................59
4.7.1 RS232C Port Configuration ........................................................................................60
4.7.2 Create a New Gateway (KX-TDA0480 Unit) .............................................................62
4.7.3 Create a New Gatekeeper ............................................................................................73
4.7.4 Create an Other Unit....................................................................................................75
4.8 Create/Edit Common Configuration ..........................................................................77
4.9 Configure Units.............................................................................................................79
4.9.1 Configure Gateway Units (KX-TDA0480) .................................................................83
4.9.2 Configure a Gatekeeper Unit.....................................................................................121
4.10 Transfer Setup and Configuration Files to Units ..................................................129
4.11 Synchronise Unit Time and Date ............................................................................135
Appendix A Appendices
A1 Voice Over IP Addressing ..........................................................................................138
A2 Numbering Systems....................................................................................................140
A2.1 Numbering Plan Example..........................................................................................140

Table of Contents
4 Installation Manual
A2.2 Dialling Examples .................................................................................................... 140
A3 DNS Configuration .................................................................................................... 142
A3.1 KX-TDA0480 DNS Functions ................................................................................. 142
A3.2 KX-TDA0480 Internal DNS Database ..................................................................... 142
A4 Pad Control and AGC ............................................................................................... 146
A4.1 PAD Controls............................................................................................................ 146
A4.2 AGC .......................................................................................................................... 146
A5 Optimising Performance ........................................................................................... 147
A5.1 Voice Volume............................................................................................................ 147
A5.2 Transmission Delays................................................................................................. 147
A5.3 Firewalls.................................................................................................................... 151
A6 Configuration Files .................................................................................................... 153
A7 FTP File Transfers ..................................................................................................... 155
A8 Worksheet Masters .................................................................................................... 160
Glossary ............................................................................................... 165

KX-TDA0480 Overview
Installation Manual 5
Section 1
KX-TDA0480 Overview

KX-TDA0480 Overview
6 Installation Manual
1.1 KX-TDA0480 Overview
The KX-TDA0480 is self-contained H.323 Version 2 compliant communications device
(Gateway) that allow organisations to route both voice and fax communications over any TCP/
IP network.
The KX-TDA0480 installed in the IP PBX can be used to seamlessly bridge PSTN and
analogue telephone with digital data networks, allowing organisations to more fully exploit
their existing intranet and internet facilities. Most importantly, since communications take
place over digital data networks, the high cost of long distance communications over
conventional telephone networks is virtually eliminated.
In the simplest sense, the KX-TDA0480 converts outgoing voice or fax signals into a digital
format, compresses and packages the signal for transmission over digital TCP/IP networks. On
the incoming side, the KX-TDA0480 reverses this process, receiving voice or fax data packets
and translating them back into appropriate voice and fax signals.
Simplified IP Gateway network connection
In summary, the KX-TDA0480 provides organisations with a reliable solution for high quality
integrated voice and fax communications using existing LAN/WAN environments without
interrupting or compromising ongoing data communications.
The KX-TDA0480 incorporates many features that help to assure a robust and easy-to-use
product that delivers high quality voice communication and error free fax transmission.
Fax Interface
The KX-TDA0480 IP Gateway card is capable of real-time fax transmission using IP (T.38)
transmission, thereby taking full advantage of the data network's flow and data control (TCP
or UDP transmission).
Router Router
PSTN PSTN
LAN
LAN
IP PBXIP PBX
IP Network

KX-TDA0480 Overview
Installation Manual 7
DTMF Detect and Regeneration
The KX-TDA0480 is capable of detecting and regenerating DTMF signals. Sending units are
able to detect and convert DTMF tones for reliable transmission. On the receiving end, the unit
regenerates DTMF tones, assuring accurate transmission when interfacing with Auto
Attendant/Voice Mail or Interactive Voice Response systems.
Voice Quality
The KX-TDA0480 provides high-quality voice compression encoding which can be
configured on a priority basis to automatically select between 64kbps PCM stream as either
G.729A (8kbps), G.723.1 (6.3kbps) or G.723.1 (5.3kbps) compression and packet priority
control.
In addition, proprietary dynamic jitter buffer and Dynamic Echo Cancellation further assure
uninterrupted and natural speech communications.
Network Connectivity
The KX-TDA0480 supports a 10BaseT Ethernet interface for network connection. WAN
connectivity is provided through any IP router.
H.323 Compliance
The KX-TDA0480 is H.323 Version 2 compliant.
When implemented within an H.323 network, units are simultaneously managed as H.323
compliant gateways, using H.323 Gatekeeper device call control, address management, and
bandwidth control capabilities.
IP and Telephone Numbering Management
The KX-TDA0480 employs a unified telephone numbering management system. It is easy to
create a numbering plan that conforms to numbering plans of PBX.
IP to telephone number translation can be handled in a number of ways.
H.323
Gateway
H.323
Gatekeeper
H.323
Terminal
H.323
Terminal
H.323
MCU
H.323
Terminal

KX-TDA0480 Overview
8 Installation Manual
1. In H.323 compliant networks (e.g., Gatekeeper devices are employed) translations are
handled by an H.323 Gatekeeper device.
2. Finally, internal DNS capabilities can also be combined to optimise network performance.
SNMP Capabilities
The KX-TDA0480 can be configured to use network management control through SNMP
(Simple Network Management Protocol - MIBII).
Remote Control and Management
Installation and configuration of the KX-TDA0480 is performed using Maintenance Console
Software (MCS).
For first-time installation the Maintenance Console Software is used in conjunction with a
common RS232C interface in order to establish a unit's new IP addressing. Once this is done
and units are on-line in the network, the Maintenance Console Software can be used to
configure and troubleshoot units remotely.
Alternatively, the KX-TDA0480 configuration files can be manually configured and uploaded
to units, or the KX-TDA0480 on-line configuration commands can be entered directly to a unit.
The advanced unit configuration techniques are applied using an RS-232C, LAN, or a Telnet/
FTP link.
T.38 Compliance
Real time Internet Fax communication in accordance with ITU-T recommendation T.38 is
offered.
OR
H.323 Gatekeeper IP Gateway card internal DNS

Planning
Installation Manual 9
Section 2
Planning
The KX-TDA0480 provides versatile and reliable low
cost voice and fax over IP networks. The equipment and
software are designed to be easily integrated into
existing data and telephony networks. Proper planning
will make the installation process go more easily and
will assure that the network can be easily maintained
and upgraded. This section covers the following
planning related topics; (1) General discussion of the
KX-TDA0480 configurations and components. (2)
Presentation and description of worksheets used to
record information needed to install and configure a IP
network.

Planning
10 Installation Manual
2.1 Basic Configuration Overview
The KX-TDA0480 is an H.323 Version 2 compliant Internet Voice Gateway card. Units are
designed to provide voice and fax transmission over an IP network, permitting the creation of
voice/fax networks over any IP compatible intranet and Internet.
IP-to-telephone number translation can be managed using H.323 Gatekeeper functions or the
KX-TDA0480's internal DNS functions.
A basic configuration is shown in Figure "Basic network configuration".
A few conditions must be met for the KX-TDA0480 installation.
• The KX-TDA0480 must be connected to the LAN using an Ethernet interface and must
be connected to the WAN (e.g., IP network) using a router.
• Only one IP network (Internet, Intranet, and VPN) can be used to interconnect
communicating devices.
• The KX-TDA0480 requires that the network used support static IP addressing.
Basic network configuration
Static addressing means that the IP addresses allocated to various devices in the network are
represented by fixed values. In some network applications, particularly large ones, addresses
are sometimes dynamically allocated (DHCP/BOOTP). When this is the case, a block of IP
addresses must be allocated for static assignment for the KX-TDA0480.
Router Router
PSTN PSTN
LAN
LAN
IP PBXIP PBX
IP Network

Planning
Installation Manual 11
Hybrid configurations such as those shown in Figure "Examples of undesirable network
configurations" are not allowable. These configurations will produce large voice delays, voice
quality deterioration, and unreliable connections.
Examples of undesirable network configurations
IP Network
IP Network 1
Telephone Network
IP Network 2

Planning
12 Installation Manual
Sample network configuration
In the sample network, the New York Main Office and the Los Angeles and San Francisco
branch offices are using the KX-TDA0480 to realise low-cost voice and fax communications
through the IP network.
This sample is used throughout this manual to illustrate network and unit configurations. Also
see the IP addressing and numbering plan network diagrams in Appendices A1 and A2.
And this network is configured using the KX-TDA0480's internal DNS functions to manage
network IP address-to-telephone number translations. See Appendix A3 for details regarding
this function.
Although the sample network described above illustrates many of the KX-TDA0480's
capabilities, it represents only one of many possible network configurations. The various
features and methods for implementing KX-TDA0480 products are discussed in greater detail
in the following sections of this guide.
Whatever the configuration envisioned, when planning a network installation, take care to
avoid configurations that introduce unnecessary delays in transmission time. This is especially
important in the case of Firewall protection systems or VPN (Virtual Private Network) devices.
See Appendix A5 Optimising Performance: for a discussion of methods for optimising
communications.
Router PBX
Router
Router
PSTN
PSTN
PSTN New York Main Office
Los Angels Branch Office
San Francisco Branch Office
IP PBX
IP PBX
IP PBX
IP PBX
IP Network
KX-TDA0480 (LA01)
KX-TDA0480 (NY01)
KX-TDA0480 (NY02)
KX-TDA0480 (SF01)
Networking
or

Planning
Installation Manual 13
2.1.1 H.323 Version 2 Networks
The H.323 Version 2 standard is an important step toward the standardisation of equipment and
software used in IP telephony. The KX-TDA0480 is compliant with the standards set forth
under the H.323 specifications.
The sample network used throughout this document is configured as H.323 and examples of
the parameters needed for network configuration are provided. Below is a brief discussion of
the H.323 standard and the role the KX-TDA0480 plays in the scheme of things.
H.323 Network Overview
H.323 is a device-independent, comprehensive set of multimedia communications standards
set forth by the International Telecommunications Unit (ITU). Among others issues, H.323 sets
forth standards for multimedia communications over IP-based Local Area Networks (LANs)
and Wide Area Networks (WANs) and for end-point (terminal) devices which interact across
the networks.
When implemented within an H.323 network, the KX-TDA0480 compliance helps to insure
that:
• The KX-TDA0480 is interoperable with other H.323 compliant devices, irrespective of
manufacturer.
• Communications between various networks (LAN and WAN), and between end-point
devices (terminals), is as seamless as possible.
• The impact of high network loads caused by bandwidth intensive applications such as video
and telephony applications, are more easily handled through H.323 bandwidth
management.
• The effects of variable LAN latency inherent in various networks are minimised.
• End-point terminals with differing capabilities (data, audio, and video) can interact.
The H.323 standard sets forth four major components that participate in an H.323
"conference".
H.323 Network Entities
•Terminals
•Gateways
• Gatekeepers
H.323
Gateway
H.323
Gatekeeper
H.323
Terminal
H.323
Terminal
H.323
MCU
H.323
Terminal
H.323 Gatekeeper Zone

Planning
14 Installation Manual
• Multipoint Control Unit (MCU)
Gatekeepers
The Gatekeeper is the vital link in an H.323 enabled network. It acts as the central point of
management for all calls within its zone and it provides call control services to all registered
endpoints.
These devices perform several vital functions:
• Gatekeepers are the central points at which LAN identifiers for terminals and gateways
(e.g., telephone numbers) are translated into IP and IPX addresses.
• Gatekeepers can perform bandwidth management tasks that help minimise the impact of
high network loads produced by bandwidth intensive communications.
• Gatekeepers are also capable of providing additional services. For example, they can be
used to balance call loads and to keep billing records for calls placed within their zone.*1
Gateways
In an H.323 network, the KX-TDA0480 is classified as a Gateway device.
Gateways can provide many different kinds of service but almost all provide translation
services that enable end-point terminals of different types to communicate with one another
seamlessly. TCP/IP network Interfaces are provided for analogue telephone and fax, a digital/
analogue proprietary telephones, PBX, and PSTN networks.
When the KX-TDA0480 is installed in an H.323 network, the unit is in continuous
communication with the H.323 Gatekeeper and uses the call addressing and management
services provided by the Gatekeeper.
In addition, the KX-TDA0480 provides the interface between the worlds of voice and data
communications, performing for example, voice compression/decompression and voice and
fax data packetisation and de-packetisation.
Terminals
At a minimum, H.323 terminals support voice communications, but may also support video
and data. Three other required components are Q.931 for call signalling and call setup,
Registration/Admissions/Status (RAS), which is used for Gatekeeper and Gateway
communications, and support for RTP/RTCP sequencing of audio and video packet data. These
requirements apply to all H.323 devices.
Although the KX-TDA0480 is capable of communicating with other H.323 compliant devices,
the current implementation is intended to communicate with PSTN terminal devices such as;
analogue telephones, PBXs, Key Telephone Systems, and other telephone networking devices.
Multipoint Control Unit (MCU)
MCUs manage the process by which calls involving three or more terminals are setup and
managed. The capabilities may be implemented in stand-alone equipment or may be integrated
into Gateway and/or terminal devices.
*1 Gatekeeper "additional services" vary based upon device manufacturer.

Planning
Installation Manual 15
2.1.2 DNS
In networks not using an H.323 Gatekeeper, DNS facilities are used to perform telephone
number-to-IP address translations. When DNS is used, the DNS facility provides each KX-
TDA0480 in the network with the network IP address-to-telephone number information
needed to communicate with other units in the network.
The KX-TDA0480 has an internal DNS facility that can be used to perform this task.
Characteristics
For the KX-TDA0480 internal DNS, this information is recorded and uploaded to all units
using the KX-TDA0480 DNS.DAT file.
The MCS is used to generate and upload the DNS.DAT file containing definitions for up to 511
units. The following information is entered during DNS.DAT file creation:
•UnitCode
• Number of digits in the unit's extension number
• Unit's IP address
• Connection port no.
Whenever units are added to a network or their number plans changed, all DNS configuration
files must be updated. DNS configuration files should only be uploaded to units AFTER all
network units have been setup in the MCS.
2.1.3 G3 Fax
The KX-TDA0480 is capable of transmitting faxes using the data network to which the unit is
connected and will automatically differentiate between fax and voice transmissions. Fax
communication over a data network uses error-checking flow control protocols that assure
accurate transmission.
When this feature is used, each unit supports up to four fax terminal connections. During fax
transmission, the ports in use are temporarily unavailable for voice communication. The fax
unit is connected to PBX unit port using a 2-wire line.
The following information should be considered when installing and using the KX-TDA0480's
fax features.
Characteristics
• G3 fax conforms to ITU-T Rec. T.30 standards
• Up to four fax lines per unit
• Communication configuration is 14400, 9600, 7600, 4800 or 2400 bps with no fall back
Operational limits
• Manual transmission and voice reservation functions of the G3 fax terminal cannot be used.
• Up to four fax communications per unit can be conducted at a time.

Planning
16 Installation Manual
• Under high network load and poor transmission conditions, a fax communication may be
dropped.
• During a fax connection, the KX-TDA0480 sends a Ring Back Tone (RBT) until a fax
connection is achieved.
2.1.4 DTMF Detection
The KX-TDA0480 provides DTMF detection and regeneration capabilities.
Characteristics
• Sending units detect and convert DTMF tones for reliable TCP transmission.
• Receiving units regenerate DTMF tones.
• Assures accurate and reliable transmission when interfacing with Auto Attendant/Voice
Mail or Interactive Voice Response systems.
• Selecting the DTMF signal method which the KX-TDA0480 sends from among Auto,
Alphanumeric, and Signal.
Operational limits
• When a unit is configured to use DTMF regeneration, the feature may introduce some
transmission delay.
In most cases (Voice Mail, IVR, Auto Attendant), it will be the calling party which will need
to send DTMF tones by dialling numbers. As a general rule it is best to avoid duplicating
detection on two communicating KX-TDA0480. This can be accomplished by always
selecting the DTMF detect Outgoing parameter when using DTMF regeneration.
In the example shown in DTMF Detection, two units use DTMF regeneration and are
configured so that the feature is enabled only once irrespective of which unit initiates
communications.
DTMF Detection
IP Network
Voice path used
IP-Gateway Card
(DTMF Outgoing)
IP-Gateway Card
(DTMF Outgoing)
IP-Gateway Card
(DTMF Disabled)

Planning
Installation Manual 17
In the case of the third unit, with no DTMF regeneration enabled, duplication is also avoided
since units with DTMF regeneration detects the absence of the feature on the unit and transmits
DTMF using the voice path.

Planning
18 Installation Manual
2.2 Worksheets
Because the KX-TDA0480 is designed to accommodate a variety of network scenarios, a wide
range of parameters can be configured. Although in simpler installations, the default settings
will often be sufficient, some applications may require that specific parameters be adjusted to
match existing network interfaces.
Whether the installation is simple or more complex, configuration information needs to be on-
hand once the installation of the KX-TDA0480 begins. This information should be determined
during the network planning process.
At a minimum, IP addressing, telephone network, and telephone numbering plans must be
provided. Additionally, Network, PBX, and PSTN interface parameters may be needed.
Finally, information about special features to be implemented will need to be prepared.
The worksheets described in this section are designed to assist in the network planning process
and should be filled-out before beginning physical and logical installation. To make the process
easier, they employ a top-down strategy, follow a recommended order of operations, and
conform to the Maintenance Console Software's interface.
Determining the information to be recorded on these worksheets requires a specific knowledge
of any existing network, existing PBX telephone systems, and a thorough knowledge of IP
network addressing methods and telephone numbering systems.
Data from the Sample Network Diagram illustrated in Appendix A1 of this document are
included. Where applicable, field defaults and applied values are indicated in the text by an
underscore. Sample network IP addressing and telephone numbering examples are illustrated
in Appendices A1 and A2.
Reproduction masters for the worksheets can be found in Appendix A8.
2.2.1 Network Worksheets
The Network worksheets are designed to allow the planning process to be conducted using a
top-down approach.
Network worksheets organise information about the KX-TDA0480 in a summary fashion, so
that the relationship between the network IP addressing and numbering plan can be easily seen.
Also, if DNS facilities are used instead of an H.323 Gatekeeper, this information must be
supplied to the DNS entities so that all KX-TDA0480 can be made aware of one another.
Reproduction masters for all worksheets in this section are included Appendix A8 of this
document.
2.2.2 Network Units List Worksheet
Use the Network Units List Worksheet to record unit identifications and IP addressing
information to be installed in the network.
This worksheet is designed for use as a master list of key unit information and is useful in
planning the deployment of units.
The seven fields are to be completed for each KX-TDA0480 installed in the network. The
information contained on this worksheet will be transferred to individual unit setup worksheets
discussed later in this section.
See sections 4.7.2 Create a New Gateway (KX-TDA0480 Unit) and 4.7.3 Create a New

Planning
Installation Manual 19
Gatekeeper for Maintenance Console Software procedures to configure this information in the
KX-TDA0480.
A reproduction master for this worksheet is included in Appendix A8.
Group Name
Use the Group Name field to assign a group in which to create and store the KX-TDA0480 in
the Maintenance Console Software. Subgroups can also be created. The procedure for creating
Groups is discussed in Section 4.6 of this document.
Each KX-TDA0480 must be assigned to a Group. The New Group command is used to enter
this information in the Maintenance Console Software. Although the Maintenance Console
Software requires that this be done before units (Gateways) can be defined, it is used for unit
identification only and is not recorded in the unit's configuration file (OFDD.VHO).
DNS information is stored in the unit's DNS.DAT file.
The Group Name field allows for entry of an unrestricted alphanumeric string.
For convenience, the Group Names in the sample worksheet are designated as the names of the
cities in which the units will be installed.
• This worksheet contains all of the information needed to initialise a network's KX-
TDA0480 using the Maintenance Console Software Unit Setup Wizard.
• If this setup information is uploaded to each unit and the units are rebooted, it is possible to
perform all remaining configuration tasks remotely using the Maintenance Console
Software.
Group Name Unit Name Unit IP Address Subnet Mask
IP Address
Route IP
Address 1
Route IP
Address 2
Signal
port no.
IP Gateway Network Units List Worksheet
New York
New York
San Francisco
San Francisco
Los Angels
Los Angels
NY01
NY02
SF01
SF02
LA01
LA02
133.149.1.91
133.149.1.92
206.184.223.95
206.184.223.96
206.45.11.34
206.45.11.35
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
133.149.1.1
133.149.1.1
206.184.223.1
206.184.223.1
206.45.11.1
206.45.11.1
1720
1720
1720
1720
1720
1720

Planning
20 Installation Manual
Unit Name
Use the Unit Name field to record a name to be associated with each network unit (i.e.,
Gateway) in the Maintenance Console Software. Although the Maintenance Console Software
requires this information before a unit can be defined and configured, it is used for unit
identification only and is not recorded in the unit's configuration file (OFDD.VHO).
The Unit Name field allows for the entry of an unrestricted alphanumeric string.
In the sample worksheet the unit names are combination of office name and numbers (e.g.,
NY01, NY02, etc).
Unit IP Address (VHUB_IP)
Use this field to record each network unit's unique IP address.
This address must conform to Internet Protocol addressing requirements, e.g.
nnn.nnn.nnn.nnn, where nnn is a value of 0 to 255 excluding 0.0.0.0 and 255.255.255.255.
The default setting is 192.168.1.200.
IP addressing information is typically supplied by a network administrator.
Subnet Mask (VHUB_SUBNET)
Use this field to record each network unit's Subnet Mask IP address.
This address must conform to Internet Protocol addressing requirements, e.g.
nnn.nnn.nnn.nnn, where nnn is a value of 1 to 255 excluding 0.0.0.0 and 255.255.255.255.
The default setting is 255.255.255.0.
Subnet IP addressing information is typically supplied by a network administrator.
Route IP Address 1 (GW_IP)*1
Use the Route IP Address 1 field to record the IP address of the primary gateway to be
associated with each of the network units.
For each unit, the unit's Gateway 1 (i.e., primary Gateway) is the one that will be accessed by
the unit during normal operation.
The KX-TDA0480's gateway is typically a router or similar device. This address must conform
to Internet Protocol addressing requirements, e.g. nnn.nnn.nnn.nnn, where nnn is a value of 0
to 255 excluding 0.0.0.0 and 255.255.255.255.
There is no default value.
IP addressing information is usually supplied by a network administrator.
•The IP and Gateway addresses must belong to the same Subnet. The unit will not operate
properly and the alarm lamp will be lit when these values are incompatible. Although the
MCS rejects conflicting addresses, care must be used if the VHUB_SUBNET parameter is
configured manually, using the KX-TDA0480 on-line commands.
*1 The Gateway is the unit's link to Wide Area Network. The GW-IP refers to the IP address of the device (e.g., a router or similar
device) to which the KX-TDA0480 forwards data packets for delivery to the IP network and from which the KX-TDA0480
receives data packets. In the case of an installation behind a firewall, this address is used to route the KX-TDA0480 data through
the protection facilities. See Appendix A5 and the KX-TDA0480 Programming Guide for details regarding installation behind
a Firewall.