Broadband Telecommunications Handbook

Broadband Telecommunications Handbook

by Regis J. Bates

Paperback(Older Edition)

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Product Details

ISBN-13: 9780071346481
Publisher: McGraw-Hill Professional
Publication date: 11/28/1999
Series: McGraw Hill Telecommunications Series
Edition description: Older Edition
Pages: 623
Product dimensions: 7.39(w) x 9.20(h) x 1.66(d)

Read an Excerpt

Chapter 1: Introduction to Telecommunications Concepts

Welcome to the world of telecommunications again! In this book, we'll attempt to deliver a series of different approaches to the use and application of telecommunications' principles, concepts, and guidelines and offer new approaches to the use of voice and data communications.

Last year, I wrote The Voice and Data Communications Handbook, Signature Edition, as a means of introducing several new ways of looking at the telecommunications industry. The Voice and Data Handbook was so successful that it begged for a sequel with a more in-depth approach and a more technical view of the use of telecommunications. Therefore, my goal is to delve into the topics of broadband communications. For those who have not read other books on this topic, I will attempt to simplify the concepts discussed. For those who had a chance to read the first book (or others on this topic), I will attempt to pick up where we left off during the first volume. This book is structured by groupings of topics. For example, the first few chapters work with the convergence of voice and data networks as we see the virtual private networks, intelligent networks, and the portability of our systems for today and the future.

After the first grouping of chapters, we step into a discussion of signaling systems that make wonderful things happen in the convergence worldcoupled with that discussion is the idea of computer and telephony integration. (What better way to describe convergence!)

After a few ideas have sunk in, we move on to a high-speed data networking strategy, with the use of Frame Relay. After Frame Relay, we discuss the use of ATM for its meritsand benefits. Next, we take the convergence a step farther and delve into the Frame and ATM internetworking applications-still a great way to carry our voice and data no matter how we slice and dice it.

Just when we thought it was safe to use these high-speed services across the WAN, we realize that local access is a problem. Entering into the discussion is the high-speed convergence in the local loop arena with the use of CATV and cable modems to access the Internet at LAN speeds. Mix in a little xDSL, and we start the fires burning on the local wires. The use of copper wires or cable TV is the hot issue in data access.

From the discussion of the local loop, we then see the comparisons of a wireless local loop with LMDS and MMDS. These techniques are all based on a form of Microwave, so the comparison of microwave radio techniques is shown.

Wireless portability is another hot area in the marketplace. Therefore, we compare and contrast the use of GSM, cellular, and personal communications' services and capacities. Convergence is only as good as one's ability to place the voice and data on the same links.

Leaving the low-end wireless services behind, we then enter into a discussion of the sky wave and satellite transmission for voice and data. No satellite transmission discussion would be worth anything without paying homage to the TCP and IP protocols on the satellite networks. Yet, the satellite services are now facing direct competition where the Low Earth Orbit satellite strategies are becoming ever popular. The use of Teledesic, Iridium, or Globalstar systems are merely transport systems. These pull the pieces together and will offer voice and data transmission for years to come.

One could not go too far with the wireless-only world, so we back up and begin to contrast the use of the wired world again. This time, we look at T1, T2, and T3 on copper or coax cable, which is a journey down memory lane for some. However, by adding a little fiber to the diet, we provide these digital architectures on SONET or SDH services. SONET makes the T1 and T3 look like fun! Topics include the ability to carry Frame Relay and ATM as the networks are now beginning to meld together. SONET is good, but if we use an older form of multiplexing (wavelength), we can get more yet from the fibers. So, we look at the benefits of dense-wave division multiplexing on the fiber to carry more SONET and more data.

With the infrastructure kicked around, the logical step is to complete this tour of the telecommunications arena with the introduction of the Internet, intranets, and extranets. Wow, this stuff really does come together! Using the Internet or the other two forms of nets, we can then carry our data transparently. What would convergence be without the voice? Therefore, the next step is to look at the use of voice over Internet Protocols (IPs). Lastly, we have to come up with a management system to control all the pieces that we have grouped and bonded together. This is in the form of a simple network management protocol (SNMP) as the network management tool of choice. If all the converged pieces work, there is no issue. However, with all the variants discussed in this book, we must believe that "Murphy is alive and well!" Thus, all the pieces are formed together by groups, to form a homogenous network of Internets.

Basic Telecommunications Systems

When the FCC began removing regulatory barriers for the long distance and customer premises equipment (CPE) markets, its goal was to increase competition through the number of suppliers in these markets. Recently, consumers have begun to enjoy lower prices and new bundled service offerings. The local and long distance markets are examples of the new direction taken by the FCC in the 1980s to eliminate and mitigate the traditional telephone monopoly into a set of competitive markets. Although these two components of the monopoly have been stripped away, barriers still exist at the local access network-the portion of the public network that extends between the IEC network and the end user. The local loop and the basic telecommunications infrastructure are not as readily available as one would like to think.

The growth of private network alternatives improves with facilitiesbased competition in the transport of communications services. The industry realizes that more than 500 competitive local exchange carriers have grown out of the deregulation of the monopolies. These CLECs include cable television networks, wireless telephone networks, local area networks (LANs), and metropolitan area networks. Incumbent local exchange carriers (ILECs) indicate that their networks are continually evolving into a multimedia platform capable of delivering a rich variety of text, imaging, and messaging services as a direct response to the competition. Many suggest that their networks are wide open, for all competitors. Imagine an open network -a network with well-defined interfaces accessible to all-allowing an unlimited number of entrants a means to offer competitive services limited only by their imagination and the capabilities of the local loop network facilities.

If natural monopolies are still in the local exchange network, open access to these network resources must be fostered to promote a competitive market in spite of the monopolistic nature of the ILECs. The FCC continues to wrestle with how far it has to go and what requirements are necessary to open and equal access to the network.

Network unbundling, the process of breaking the network into separate functional elements, opens the local access to competition. CLECs select unbundled components they need to provide their own service. If the unbundled price is still too expensive, the service provider will provide its own private resources. This is the facilities-based provider. All too often, we hear about new suppliers who offer high-speed services, better than the incumbent. Yet, these suppliers are typically using the Bell System's wires to get to the consumer's door. The only change that occurs is the person to whom we send the bill. Hardly a competitive local networking strategy. As a result, the new providers (CATV, wireless local loop, IEC, and facilitiesbased CLEC) are now in the mode to provide their own facilities...

Table of Contents

Introduction to Telecommunications Concepts
Telecommunications Systems
Virtual Private NetworksAdvanced Intelligent Networks
Local Number Portability
Computer-to-Telephony Integration
Signaling System 7
CTI Technologies and Applications
Integrated Services Digital Network
Frame Relay
Asynchronous Transfer Mode
ATM and Frame Relay Internetworking
Cable TV Systems
Cable Modem Systems and Technology
Data Over Power Lines
xDSL
Microwave and Radio-Based Systems
Local Multipoint Distrobution Services
Specialized Mobile Radio
Cellular Communications
Global Services Mobile Communications
Personal Communications Services
Wireless Data Communications
Satellite Communications Networking
Low Earth Orbit Satellites
The T Carrier Systems
SONET and SDH
Wave Division Multiplexing
The Internet
Voice-Over IP
Intranets and Extranets
Network Management SNMP
Index

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