Comtech EF Data DTMX5000 User Manual

SpectraCast

DTMX5000

IP Gateway

Installation and Operation Manual

Part Number MN/DTMX5000.IOM Revision 1

®

Comtech EFData is an ISO 9001

Registered Company.

®

SpectraCast

DTMX5000

IP Gateway

Installation and Operation Manual

Part Number MN/DTMX5000.IOM

Revision 1

September 11, 2000

Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, [phone], FAX: [phone].

Copyright © Comtech EFData, 2000. All rights reserved. Printed in the USA.

Customer Support

Contact the Comtech EFData Customer Support Department for:

• Product support or training

• Information on upgrading or returning a product

• Reporting comments or suggestions concerning manuals

A Customer Support representative may be reached at:

Comtech EFData
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA

[phone] (Main Comtech EFData Number)
[phone] (Customer Support Desk)
[phone] FAX

or, E-Mail can be sent to the Customer Support Department at:

[e-mail]

Contact us via the web at www.comtechefdata.com.

1. To return a Comtech EFData product (in-warranty and out-of-warranty) for
repair or replacement:

2. Request a Return Material Authorization (RMA) number from the Comtech
EFData Customer Support Department.

3. Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.

4. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton /p ack ag ing .

5. Ship the product back to Comtech EFData. (Shipping charges should be prepaid.)

For more information regarding the warranty policies, see Warranty Policy, p. xii.

ii Rev. 1

Table of Contents

Customer Support.......................................................................................................................................................ii

Overview of Changes to Previous Edition..............................................................................................................viii

About this Manual ...................................................................................................................................................viii

Conventions and References....................................................................................................................................ix

Reporting Comments or Suggestions Concerning this Manual...............................................................................ix

EMC Compliance........................................................................................................................................................ x

EN55022 Compliance............................................................................................................................................... x

Federal Communications Commission (FCC).......................................................................................................... x

European Low Voltage Directive..............................................................................................................................xi

Warranty Policy........................................................................................................................................................xii

Limitations of Warranty..........................................................................................................................................xii

Exclusive Remedies................................................................................................................................................ xii

Disclaimer ..........................................................................................................................................................xii

TABLE OF CONTENTS.................................................................................................III

INTRODUCTION........................................................................................................1–1

1.1 Introduction................................................................................................................................... 1–1

1.2 Description..................................................................................................................................... 1–2

1.2.1 Proxy Servers......................................................................................................................................1–4

1.2.2 Central Configuration Unit..................................................................................................................1–4

1.2.3 Network Management System............................................................................................................1–4

1.3 DTMX5000 Features.....................................................................................................................1–5

1.3.1 IP Multicast......................................................................................................................................... 1–6

1.3.2 IGMP Client........................................................................................................................................ 1–6

1.3.3 Data Mapping and DVB Mapping......................................................................................................1–6

1.3.4 Quality of Service ............................................................................................................................... 1–6

1.3.5 On-the-Fly Configuration.................................................................................................................... 1–7

Rev. 1 iii

Preface DTMX5000 IP Gateway

1.3.6 Packet Encryption ............................................................................................................................... 1–7

1.3.7 Dual Input NIC.................................................................................................................................... 1–7

1.3.8 Accounting.......................................................................................................................................... 1–8

1.3.9 Auxiliary Transport Stream Input.......................................................................................................1–8

1.3.10 Downloading Software........................................................................................................................ 1–8

1.4 DTMX5000 Configuration...........................................................................................................1–9

1.4.1 DTMX5000 Application.....................................................................................................................1–9

1.4.2 Local Configuration............................................................................................................................1–9

1.4.3 VGA Display....................................................................................................................................... 1–9

1.4.4 Remote Configuration ......................................................................................................................... 1–9

1.4.5 Firmware.............................................................................................................................................1–9

INSTALLATION.........................................................................................................2–1

2.1 Overview........................................................................................................................................ 2–1

2.2 Connect and Configure................................................................................................................. 2–2

2.3 Starting the DTMX5000............................................................................................................... 2–6

2.3.1 Connecting Network Interface Cards.................................................................................................. 2–7

2.3.2 Connect the Output Transport Stream................................................................................................. 2–7

2.3.3 Telnet Terminal...................................................................................................................................2–8

CONFIGURING THE GATEWAY USING A TERMINAL...........................................3–1

3.1 Overview........................................................................................................................................ 3–1

3.2 Editing the CFG.INI Parameters.................................................................................................3–2

3.2.1 General Parameters ............................................................................................................................. 3–4

3.2.2 Network Parameters............................................................................................................................ 3–8

3.2.3 CCU Parameters................................................................................................................................ 3–13

3.2.4 DVB Mapping Parameters................................................................................................................3–14

3.3 SNMP Parameters.......................................................................................................................3–20

3.3.1 Get Community String......................................................................................................................3–20

3.3.2 Set Community String....................................................................................................................... 3–20

3.4 Writing the CFG.INI Parameters.............................................................................................. 3–21

3.4.1 Write Parameters to CFG.INI and Reset........................................................................................... 3–21

3.4.2 Write Parameters to CFG.INI without Reset.....................................................................................3–22

3.4.3 Discarding Changes to the CFG.INI File.......................................................................................... 3–23

3.5 Configuring Maintenance Parameters...................................................................................... 3–24

3.5.1 Description of the Maintenance Parameters...................................................................................... 3–26

DTMX5000 MIB FILE.................................................................................................4–1

4.1 Overview........................................................................................................................................ 4–1

4.2 Maintenance Information Base.................................................................................................... 4–2

4.2.1 Operation Mode Parameters................................................................................................................ 4–2

iv Rev. 1

DTMX5000 IP Gateway Preface

4.2.2 Network Interface Configuration Parameters......................................................................................4–8

4.2.3 DVB Interface Parameters ................................................................................................................ 4–12

4.2.4 Multicast Channel Parameters........................................................................................................... 4–18

4.2.5 Group Parameters.............................................................................................................................. 4–19

4.2.6 Static Users Parameters................................................................................................... .................. 4–22

4.2.7 CCU Parameters................................................................................................................................ 4–25

4.2.8 Software Download Parameters........................................................................................................ 4–28

4.2.9 General Statistics Parameters............................................................................................................ 4–33

4.2.10 Client Data Flow Statistics Table...................................................................................................... 4–36

4.2.11 Client Configuration Parameters Table............................................................................................. 4–41

TROUBLESHOOTING...............................................................................................5–1

5.1 Troubleshooting ............................................................................................................................ 5–1

5.1.1 The Gateway Does Not Power Up......................................................................................................5–2

5.1.2 No Communication Between the Gateway and the Local Terminal................................................... 5–2

5.1.3 The Gateway Does Not Reply to Ping from the Control and Management Interface.........................5–2

5.1.4 The Gateway Does Not Reply to Ping from the Transportation Interface .......................................... 5–2

5.1.5 Gateway Statistics Tables Indicate that there is No Data Flow to Users............................................. 5–2

5.1.6 The Gateway Does Not Reply to Telnet/FTP Users............................................................................5–3

5.1.7 No Telnet/FTP/SNMP Communication from Outside the LAN......................................................... 5–3

5.1.8 The Gateway Does Not Reply to SNMP Set or Get Commands......................................................... 5–3

5.1.9 The Modulator Cannot Synchronize with the Transport Stream (TS) Generated by the Gateway ..... 5–3

5.1.10 The CCU Does Not Communicate with the Gateway......................................................................... 5–4

5.1.11 The Gateway's Output is Connected to a DVB Multiplexer's Input but the DVB Multiplexer Indicates

that there is NO TS Input...................................................................................................... .......... 5–4

5.1.12 MPE Compatible Receivers Cannot Receive IP Data from the Gateway ........................................... 5–4

5.2 Ongoing Maintenance...................................................................................................................5–5

5.2.1 A User Indicates RF Lock but Cannot Receive Data.......................................................................... 5–5

5.2.2 The Gateway Statistics indicate a Large Number of Discarded Packets............................................. 5–5

5.2.3 The Gateway Does Not Reply to Telnet but Does Reply to SNMP and Terminal Communication... 5–6

5.2.4 A User Cannot Receive Multicast Channels or Loses Multicast Packets............................................5–6

5.2.5 A PC Connected to a LAN Fed by a Satellite Receiver (Static User) Does Not Receive Unicast

Transmissions ................................................................................................................................. 5–6

5.2.6 The CCU Cannot Register a User in the Gateway..............................................................................5–6

SPECIFICATIONS .................................................................................................... A–1

A.1 Overview....................................................................................................................................... A–1

A.2 Specifications................................................................................................................................ A–1

A.3 External Connections................................................................................................................... A–4

A.4 Parallel Output Pin Assignment................................................................................................. A–5

CENTRAL CONFIGURATION UNIT..........................................................................B-1

B.1 Overview........................................................................................................................................B-1

B.2 DTMX5000 Service.......................................................................................................................B-2

Rev. 1 v

Preface DTMX5000 IP Gateway

B.3 Starting a Session..........................................................................................................................B-3

B.3.1 DTMX5000 Client Application Contacts CCU .................................................................................. B-3

B.3.2 CCU Contacts Authentication Server..................................................................................................B-3

B.3.3 Authentication Server Allows Access................................................................................................. B-4

B.3.4 CCU Contacts DTMX5000 Gateway.................................................................................................. B-4

B.3.5 CCU Contacts Billing Server..............................................................................................................B-4

B.3.6 CCU Contacts Proxy Server................................................................................................................ B-5

B.3.7 CCU Responds to DTMX5000 Application........................................................................................ B-5

B.4 Processing Information Requests ................................................................................................ B-6

B.4.1 Proxy Server Requests/Receives Information..................................................................................... B-6

B.4.2 Proxy Server Sends Information to DTMX5000 Gateway..................................................................B-6

B.4.3 DTMX5000 Gateway Routes Information to Subscriber.................................................................... B-6

B.5 Terminating a Session................................................................................................................... B-7

B.6 Installing the CCU ........................................................................................................................B-7

B.6.1 System Requirements.......................................................................................................................... B-7

B.6.2 Installing Data Access Objects (DAO)................................................................................................B-8

B.6.3 Installing the CCU Application........................................................................................................... B-9

B.6.4 Getting Started .................................................................................................................................. B-10

B.6.5 Uninstalling the CCU Application....................................................................................................B-11

B.7 Configuring the CCU.................................................................................................................. B-12

B.7.1 Specifying CCU Server Properties.................................................................................................... B-12

B.7.2 Adding a CCU Server ....................................................................................................................... B-15

B.7.3 Deleting a CCU Server...................................................................................................................... B-15

B.8 Configuring the CCU to the RADIUS Authentication Server ................................................B-16

B.9 Configuring the CCU to the RADIUS Billi ng Server .............................................................. B-19

B.10 Configuring the CCU to the Proxy Server................................................................................ B-22

B.11 Configuring the CCU to the DTMX5000Gateway................................................................... B-24

B.12 Operating the CCU..................................................................................................................... B-26

B.12.1 Monitoring the Events Log ............................................................................................................... B-26

B.12.2 The CCU Logfile Mechanism........................................................................................................... B-27

B.13 Client Parameters Sent from the RADIUS............................................................................... B-30

B.13.1 Authentication Server........................................................................................................................ B-30

HIGH AVAILABILITY SERVER (HAS-2000)............................................................C–1

C.1 Overview....................................................................................................................................... C–1

C.1.1 Standard References............................................................................................................................C–2

C.2 General Description......................................................................................................... ............ C–2

C.2.1 Brief System Description....................................................................................................................C–2

C.3 Detailed Description..................................................................................................................... C–3

C.3.1 System Details.....................................................................................................................................C–3

vi Rev. 1

DTMX5000 IP Gateway Preface

C.3.2 System Diagram..................................................................................................................................C–5

C.3.3 Technical Specifications .....................................................................................................................C–6

Figures

Figure 1-1. The DTMX5000................................................................................................................................ 1–1

Figure 1-2. DTMX5000 Environment................................................................................................................. 1–3

Figure A-1. Forwarding Rate as a Function of Packet Size................................................................................ A–3

Figure A-2. External Connections...................................................................................................................... A–4

Figure C-1. System Diagram...............................................................................................................................C–5

Tables

Table A-1. Gateway Specification...................................................................................................................... A–2

Table A-2. Parallel Output Pin Assignment........................................................................................................A–5

Rev. 1 vii

Preface DTMX5000 IP Gateway

Overview of Changes to Previous Edition

This revision supersedes part number MN/DTMX5000 Rev. 0 dated June 9, 2000.

A summary of the changes made for Rev. 1 includes:

General Updated company name and revision level/date
Chapter 1 Updated photograph and graphics
Chapter 3 Updated General parameters

Updated 3.2 Editing CFG.INI parameters
Updated 3.2.1 General Parameters
Added 3.2.1.9 Gateway Description section
Updated 3.2.2 Network parameters
Updated 3.2.2.5 Transportation
Deleted 3.2.10 Multicast Key Period
Updated 3.2.3 CCU Parameters
Updated 3.2.4 DVB Mapping Parameters
Updated 3.3 SNMP Parameters
Updated 3.5 Maintenance Parameters
Updated 3.5.1 Description of Maintenance Parameters

About this Manual

This manual provides installation and oper at ion info rmation for the Comtech EFData
DTMX5000 IP Gateway. This is a technical document intended for earth station
engineers, technicians, and operators responsible for the operation and maintenance of
the DTMX5000 IP Gateway.

viii Rev. 1

DTMX5000 IP Gateway Preface

Conventions and References

Cautions and Warnings

CAUTION indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury. CAUTION may also be used to indicate other

CAUTION

unsafe practices or risks of property damage.

WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.

WARNING

Metric Conversion

Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.

Recommended Standard Designations

Recommended Standard (RS) Designations have been superseded by the new designation
of the Electronic Industries Association (EIA). References to the old designations are
shown only when depicting actual text displayed on the screen of the unit (RS-232, RS­485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.

Trademarks

Other product names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged.

Reporting Comments or Suggestions Concerning this Manual

Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EFData Customer Support
Department.

Rev. 1 ix

Preface DTMX5000 IP Gateway

EMC Compliance

EN55022 Compliance

This equipment meets EN55022.

This is a Class A product. In a domestic environment, it may cause radio interference in
which the user may be required to take adequate measures.

Federal Communications Commission (FCC)

Note:

All cables shall be shielded.

This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provided
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 and used in accordance with the instruction manual, may cause harmful
interference to radio communications. 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 his own expense.

x Rev. 1

DTMX5000 IP Gateway Preface

European Low Voltage Directive

The following information is applicable for the European Low Voltage Directive
(EN60950):

<HAR> Type of power cord required for use in the European Community.

CAUTION: Double-pole/Neutral Fusing

!

International Symbols:

ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung

Alternating Current.

Fuse.
Safety Ground.

Chassis Ground.

Note:

For additional symbols, refer to “Cautions and Warnings” listed earlier in this

preface.

Rev. 1 xi

Preface DTMX5000 IP Gateway

Warranty Policy

This Comtech EFData product is warranted against defects in material and workmanship
for a period of one year from the date of shipment. During the warranty period, Comtech
EFData will, at its option, repair or replace products that prove to be defective.

For equipment under warranty, the customer is responsible for freight to Comtech
EFData and all related custom, taxes, tariffs, insurance, etc. Comtech EFData is
responsible for the freight charges
the customer. Comtech EFData will return the equipment by the same method (i.e., Air,
Express, Surface) as the equipment was sent to Comtech EFData.

only

for return of the equipment from the factory to

Limitations of Warranty

The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repack ag ing of
equipment for return to Comtech EFData.

No other warranty is expressed or implied. Comtech EFData specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.

Exclusive Remedies

The remedies provided herein are the buyer's sole and exclusive remedies. Comtech
EFData shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.

Disclaimer

Comtech EFData has reviewed this manual thoroughly in order that it will be an easy-to­use guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EFData reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.

If you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EFData Customer Support Department.

xii Rev. 1

This chapter provides a general description of the DTMX5000 IP Gateway, herein after
referred to as, “the DTMX5000” or “Gateway.”

1.1 Introduction

The DTMX5000 IP Gateway (Figure 1-1) provides a high-speed connection between a
network and a satellite or cable DVB channel. The DTMX5000 is compliant with DVB
MPE standard EN 301.192. (See Appendix A.)

Chapter 1.

INTRODUCTION

1

Figure 1-1. The DTMX5000

Rev. 1 1–1

Introduction DTMX5000 IP Gateway

1.2 Description

On the input-side, the DTMX5000 connects to two 10/100 BaseT Local Area Networks
(LANs). To ensure security and support high availability, the DTMX5000 has two
separate 10/100 BaseT Network Interface Cards (NICs).

Transportation NIC

Data from this NIC can only be forwarded to the
DVB channel. This NIC can be connected to an
unsecured network (such as the Internet).

Control and Management NIC

Connected to a secured network.

The DTMX5000 links to a DVB modulator for the Single Channel per Carrier (SCPC)
transmissions, or to a DVB Multiplexer (Mux), connected to a QPSK modulator in the
case of Multiple Channels per Carrier (MCPC) transmissions. The DTMX5000
environment is shown in Figure 1-2.

1–2 Rev. 1

DTMX5000 IP Gateway Introduction

DVB Channel

CATC/Satellite

SUBSCRIBER

SUBSCRIBERS

DVB MUX

(Optional)

RADIUS

Billing

RADIUS

Authentication

Video

Audio

Stream

Informatio n

Server

Server

PSTN Modem to localISP

Router

LAN

Transportation

Gateway

C&M LAN

Line

Auxiliary Transport

Stream Input

Proxy Server

Central

Configuration

NMS

Firewall

INTERNET

Figure 1-2. DTMX5000 Environment

Rev. 1 1–3

Introduction DTMX5000 IP Gateway

1.2.1 Proxy Servers

At data request, the requested packet is routed to the proxy server. The proxy server acts
as an intermediary between the final destination and the subscriber. The proxy server
retrieves the data from its cache or the Internet, and returns the requested data to the
subscriber via the DTMX5000.

1.2.2 Central Configuration Unit

The Central Configuration Unit (CCU) can control the DTMX5000. The CCU is an
application running on a Windows NT station at the hub. This application monitors
subscriber’s activities, selects the proxy server for each session, maintains the routing
table on the proxy table server, and interacts with external billing and authentication
systems. (See Appendix B.)

As the subscriber logs On, the CCU notifies the DTMX5000 of the subscriber’s:

• Quality of Server (QoS)

• Group Identification (ID)

• Encryption Parameters

When the subscriber logs Off, the CCU updates the DTMX5000 and collects the
accounting information accumulated by the DTMX5000 for the subscriber. The CCU
connects to the Control and Management (C&M) LAN.

• If the C&M LAN is protected by a Firewall, the appropriate actions must be

taken to ensure connection between the CCU and the server (RIP2 messages
from the CCU should be able to reach the proxy server) and between the CCU
and the clients.

• For additional information, refer to the CCU User’s Manual.

1.2.3 Network Management System

The DTMX5000 is an SNMP V2 client and can be fully controlled by any ANMP-based
NMS application. The MIB parameters include the unit’s configuration, statistic and
diagnostic information. By editing and viewing these parameters, the service provider can
configure and control the DTMX5000.

The NMS also enables the service provider to view and monitor realtime performance
statistics, for example: Client information, memory usage, and packet information. The
statistics can then be evaluated to enhance the QoS offered to subscribers.

1–4 Rev. 1

DTMX5000 IP Gateway Introduction

1.3 DTMX5000 Features

The units’s many configuration options enable service providers to tailor the operation of
the DTMX5000 to suit their specific circumstances, to improve operational performance
and to offer subscribers a high quality, versatile level of service.

DTMX5000 feature include the following:

• IP Multicast, enabling the same message to be sent to many subscribers

simultaneously.

• IGMP client, enabling easy interfacing with standard routers.

• Data mapping mode for IP datagrams, piping, streaming or multiprotocol

encapsulation (SI-DAT 360).

• Compliance with the DVB MPE standard, according to EN 301.192.

• DVB mapping options, enabling the unit to operate as a fully DVB compatible

system, usable with SCPC and MCPC applications.

• Datagram flushing to maintain TCP/IP performance through DVB multiplexers

with internal buffers.

• QoS prioritizing, to enable the service provider to optimize output bandwidth

allocation according to subscribers profiles while guaranteeing minimum bit-rate
requirements.

• Packet encryption for the privacy of DTMX5000 subscribers.

• Support for up to 8192 PID in the output Transport Stream.

• Dual input NICs, one for transportation and the other for control and

management that ensures security and supports high availability.

• Passwords to enable remote NMS access.

• Remote downloads of new versions of the unit’s software and firmware.

• Auxiliary transport Stream (TS) input to combine with the TS generated by the

DTMX5000.

• On-the-Fly configuration, most DTMX5000 parameters can be configured

without stopping the service.

• Support for both static and dynamic users, using the CCU.

• Support for user groups.

The values for these and other options can be set from the local terminal connected to the
DTMX5000 and, with some restrictions, also from a remote NMS.

Rev. 1 1–5

Introduction DTMX5000 IP Gateway

1.3.1 IP Multicast

The DTMX5000 receives TCP/IP datagram addressed to subscribers and maps them onto
a DVB compatible MPEG2 transport stream. The DTMX5000 is capable of mapping two
types of datagrams.

Unicast Packets

Multicasts Packets

Each unicast packet is addresses to one individual user.

Multicast packet are add r essed are addressed to a group of users, and are
simultaneously sent to all members of the group. These packets are usually for
the distribution of files, or for streaming audio or video. It is possible to disable
Multicast broadcasting if, example: this type of transmission is being handled by
a separate DTMX5000. It is also possible to enable multicasting for predefined
channels only.

1.3.2 IGMP Client

The DTMX5000 acts as an IGMP client (RFP 1122). For each registered multicast
channel that it forwards, the unit generates an IGMP request and replies to IGMP queries.
The IGMP protocol is managed on the Transportation NIC only.

1.3.3 Data Mapping and DVB Mapping

Data mapping specifies how IP datagrams are mapped onto the output transport stream.
There are three mapping modes.

• Piping

• Streaming

• Multiprotocol Encapsulation

Data piping and data streaming are proprietary mapping, data piping without encryption
and data streaming with encryption. Multiprotocol encapsulation is used for compatibility
with other DVB based systems.

1.3.4 Quality of Service

Quality of Service (QoS) Management is a feature that determines the amount of
bandwidth each subscriber is allocated. Th is feature can eithe r be enabled or disa ble d.

• When QoS is enabled, subscribers receive their bandwidth share according to the

level of service specified in their individual subscription fees.

• When QoS is disabled, the DTMX5000 will provide best effort service, resulting

in the available bandwidth being equally divided among the various subscribers.

1–6 Rev. 1

DTMX5000 IP Gateway Introduction

The DTMX5000 contains two QoS parameters for each user:

• Committed Information Rate

• Maximum Rate

The committed information rate is the maximum the DTMX5000 will allocate to that
individual subscriber. The maximum rate specifics how the overall rate divides among all
subscribers. If at a certain time free bandwidth is available; the subscribers may or may
not receive more than their maximum rate, depending on the specified QoS mode.

1.3.5 On-the-Fly Configuration

Most of the configuration and maintenance parameters of the DTMX5000 can be
configured without disturbing the flow of data. For example: using the NMS, the user can
set a new CIR for a subscriber, without stopping the flow of data to the subscriber.

1.3.6 Packet Encryption

To provide privacy, the data addressed to individual subscribers is encrypted with the
DES algorithm, implementing the CBC mode.

For additional encryption inform ation , refer to F IPS-4 6-2 and FIPS-81 .

1.3.7 Dual Input NIC

To ensure security and support high availability, the DTMX5000 has two input 10/100
BaseT NICs:

Transportation NIC

Control and Manageme nt

Note:

The DTMX5000 supports full functionality even with only one input NIC. In this

case, the C&M input NIC acts as C&M and Transportation.

This NIC does not enable access to the C&M of the
DTMX5000. This NIC can be co nnected to the unsecured
network, such as the Internet. The DTMX5000 design prevents
hackers from gaining acces s to the unit from the transp ortation
NIC.

The Control and Management NIC of the DTMX5000 is via
the Telnet, SNMP, and FTP. This NIC is connected to a
secured C&M network. The C&M NIC can also act as an
additional transportation NIC, enabling the sending of the IP
datagrams from the C&M network to the DVB channel.

Along with security, the two input NICs enable the support the high availability
topologies. High availability will be supported in the next DTMX5000 version.

Rev. 1 1–7

Introduction DTMX5000 IP Gateway

1.3.8 Accounting

The CCU informs the DTMX5000 each time a subscriber logs On or Off the system. The
unit creates an account of the packets that each indiv idua l subsc rib ers dow nlo ads, and the
Billing Server later transfers this information for use.

The DTMX5000 also enables full access to the accounting information via the NMS.
This enables an external system to retrieve the information.

1.3.9 Auxiliary Transport Stream Input

If enabled, the Auxiliary Transport Stream (Aux TS) input is compiled with the internal
TS generated by the DTMX5000. The Aux IS input has precedence over the TS
generated by the DTMX5000.

The TS generated by the DTMX5000 can be compiled with the Aux TS input in two
ways:

1. The TS packets generated by the DTMX5000 will be transmitted only when there
is free bandwidth in the output TS of the unit. It is up to the system architecture
to ensure that such free bandwidth is available.

2. The TS packets generated by the DTMX5000 will be transmitted on free
bandwidth, instead of DVB null packets in the Aux TS input.

1.3.10 Downloading Software

To enable new software versions of the DTMX5000 application and firmware to be
downloaded, the NMS system can initiate a TFTP download process from any TFTP
server. The DTMX5000 also supports FTP services.

1.3.10.1 Default Application Fallback

TFTP or FTP may be used to remotely download new software/firmware versions to the
DTMX5000.

In the event that an invalid file is downloaded, the DTMX5000 will lock-up trying to run
the invalid code. To correct this problem, a fixed default software application is provided
on the DTMX5000’s local hard drive. This default application enables the user to
perform the download again.

Note:

The Default application is set by the manufacturer and can not be altered.

Attaching a VGA display, rebooting the DTMX5000, and pressing <D> when prompted
can access this file.

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1.4 DTMX5000 Configuration

The DTMX5000 must be connected to a local serial terminal in order to enable definition
of the unit’s essential configuration parameters.

The DTMX5000 also can be accessed and configured remotely using the unit’s NMS. In
addition, the unit supports remote configuration via a Telnet terminal.

1.4.1 DTMX5000 Application

The operation of the DTMX5000 is determined by a software application, which is
loaded automatically on Startup. A new release of this application can be downloaded to
the DTMX5000 from a remote station. A new software release also can be downloaded
using FTP.

1.4.2 Local Configuration

The unit’s default operational behavior is determined by a configuration file (
which resides on the unit’s internal hard drive. This file is persistent and is loaded by
default into memory when the DTMX5000 is started up.

CFG.INI

The
in the form of a <DUMB> terminal or PC.

file can be accessed and edited directly from a locally connected terminal,

1.4.3 VGA Display

An optional VGA display can be connected to the DTMX5000, for viewing startup and
operational messages.

1.4.4 Remote Configuration

The DTMX5000 also can be controlled and configured remotely from a Telnet terminal.
Setting the relevant parameters via the local terminal can enable Telnet services.

1.4.5 Firmware

The DTMX5000 contains a Field Programmable Gate Array (FPGA) which performs
most of the mapping of IP datagrams onto the MPEG2 transport stream. The
configuration of this FPGA is downloaded by the DTMX5000 application each time the
DTMX5000 restarts.

CFG.INI

),

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Introduction DTMX5000 IP Gateway

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This section provides important information concerning the installation of the
DTMX5000.

2.1 Overview

Note:

For security reasons, the unit’s vital parameters can only be configured through a
direct serial connection to a local terminal. The remaining parameters can be configured
either via the local terminal or remotely via a Telnet terminal.

An optional VGA display also can be connected to the DTMX5000 using a 15-pin cable
for viewing, boot, and operational messages.

Chapter 2.

INSTALLATION

2

Never install the unit where it may be exposed to rain or moisture. Water in
the unit may damage components and create a shock hazard.

CAUTION

Never remove the cover. This multiplexer has very sophisticated circuitry
that should only be serviced by a fully trained technician.
Removal of the cover might:

Void the warranty

••••

Allow ESD damage to components

••••

Create a shock hazard

••••

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Installation DTMX5000 IP Gateway

2.2 Connect and Configure

Perform the following procedures to connect the local terminal to the DTMX5000 and
establish a communications link.

Note:

Either a PC or a <DUMB> terminal, (a terminal processing no programming
capabilities) can be used as a monitor. A PC may run a terminal emulation application,
such as HyperTerminal, which is supplied as an accessory with Win95. The PC must
have the following minimum requirements:

• Windows OS, with 16 Mbit/s of RAM

• EIA-232 Serial cable

• HyperTerminal application

To connect the local terminal to the DTMX5000, proceed as follows:

1. Attach one end of a EIA-232 serial cable to the back of the DTMX5000’s COM1
connector.

2. Connect the other end of the EIA-232 serial cable to the COM1 or COM2
connector of the PC.

Configure the local term inal as foll ow s:

Note:

To enable a communication link between the terminal and the DTMX5000, it is
necessary to configure the local te rm inal. Th is conf ig urat ion can be perfo rmed with the
standard Windows HyperTerminal application.

The local terminal must be configured to the following parameters:

• Baud rate: 9600 bit/s

• Data bits: 8

• Parity: None

• Stop bit: 1

• Flow Control: Xon/Xoff

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DTMX5000 IP Gateway Installation

To configure the local termina l to the required p aram eters, proceed to the Start Menu bar
and as follows:

1. Select the Program option to display the Programs menu.

2. Select the Accessories option to display the Accessories menu.

3. Select the HyperTerminal program group. The HyperTerminal program group
window opens.

4. Double-click the Hypertrm.exe

. The Connection Description Windows

opens.

5. Enter a name and choose an icon for the connection.

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Installation DTMX5000 IP Gateway

6. Click OK. The window closes and the Phone Number window opens.

7. In the Connect using field, scroll down the dropdown list and select either
COM 1 or COM 2, depending where the local terminal is connected. Click OK.
The Phone Number window closes and the COM Properties window opens.

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DTMX5000 IP Gateway Installation

8. In the Port Setting tab, enter the setting exactly as shown.

9. Click OK. The COM Properties window closes and is replaced with the
HyperTerminal window.

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Installation DTMX5000 IP Gateway

2.3 Starting the DTMX5000

Note:

The DTMX5000 can be started once the local terminal has been connected and

configured. The optional VGA display can be connected at this time.

To start up the DTMX5000 and local terminal, proceed as follows:

Note:

Ensure the local terminal is connected and configured.

1. Double-click the icon defined for the local te rminal’s DTMX5000 connection.
The HyperTerminal window opens.

2. Power-up the DTMX5000 and the local terminal. Observe the following:

DTMX5000

VGA Display (Optional)

The booter, which is a software program, loads the application program,
and the DTMX5000’s parameters file (CFG.INI), from disk to memory.
The application program controls all the DTMX5000’s functionality.
Then an FPGA programmable ch i p is loaded. This chip is responsible for
the low level bit manipulation which creates the output transport stream.

A confirmation message is displayed, stating that the booter has loaded
the application program.

3. Observe the following screen, when the connection between the DTMX5000 and
the local terminal is established. The local terminal and the DTMX5000 are now
connected

4. Press <Ctrl>R to refresh the terminal display.

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