Click to enlargeTelecom Basics, 3rd Edition<a name="top">

Author: Lawrence Harte

Number of Pages: 354
Number of Diagrams: 182
Copyright: 2008



This book provides the fundamentals of signal processing, signaling control, can call processing technologies that are used in telecommunication systems. Covered are the key facets of voice and data communications, ranging from such basics as to how a telephone set works to more complex topics as how to send voice over data networks and the ways calls are processed in public and private telephone systems.

The reader will learn about analog and digital signals, signal modulation, channel coding, and more.....

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Sample Diagrams

There are 182 explanatory diagrams in this book

Physical and Logical Channels

This diagram shows the difference between physical and logical channels. In this example, a physical channel transports information between two points using electrical signals. The physical channel is divided into frames that contain various fields (groups of information within the frame). This diagram shows that the frames on the physical channel are divided into 4 logical channels; 3 logical channels for data and one logical channel for control. The exact relationship between the frame structure and the logical channels is called mapping. This example shows two different mapping examples. In the first example, the bits in the information portion of each frame are equally divided. In the second mapping example, more bits are proportioned to channel 2. This results in a lower data transfer rate for channels 1 and 3 while channel 2 has a higher data transfer rate.


Signal Companding and Expanding

This figure shows the basic signal companding and expanding process. This diagram shows that the amount of amplifier gain is reduced as the level of input signal is increased. This keeps the input level to the modulator to a relatively small dynamic range. At the receiving end of the system, an expanding system is used to provide additional amplification to the upper end of the output signal. This recreates the shape of the original input audio signal.


Calling Line Identification Operation

This figure shows the calling number identification operation. Calling number identification operation starts with the reception of a call. When the call is received, the initial address message (IAM) contains the calling party number of the incoming call. The IAM may contain additional information such as the text name of the calling party. This example shows that the local switching system extracts this information and combines this information with the ring signal (using different frequencies and amplitudes) and sends it to the customer during the alerting (ringing) process. If the customer has the appropriate display equipment, the calling number information is display as the telephone rings.


Table of Contents

Chapter 1 - INTRODUCTION TO TELECOMMUNICATIONS

- BASIC COMMUNICATIONS SYSTEMS
- TELEPHONE AND DEVICE NUMBERING

Chapter 2 - SIGNAL FUNDAMENTALS

- SIGNAL TYPES

- MODULATION
- DEMODULATION
- CHANNELS
- CHANNEL MULTIPLEXING
- LINE CODING
- DUPLEX SYSTEMS
- ACCESS MULTIPLEXING

Chapter 3 - SIGNAL PROCESSING

- ANALOG SIGNAL PROCESSING
- DIGITAL SIGNAL PROCESSING
- RF SIGNAL PROCESSING

Chapter 4 - TRANSMISSION SYSTEMS

- TECHNOLOGIES
- TRANSMISSION MEDIUMS
- TRANSMISSION MEDIUM LIMITATIONS
- CARRIER SYSTEMS

Chapter 5 - SWITCHING

- CIRCUIT SWITCHING
- PACKET SWITCHING
- SWITCHING SYSTEMS
- DATA ROUTING
- VIRTUAL CIRCUITS

Chapter 6 - SIGNALING

- LINE SIDE
- TRUNK SIDE
- ADVANCED INTELLIGENT NETWORKS (AIN)

Chapter 7 - PROTOCOLS

- PROTOCOL STACK
- PROTOCOL SUITES
- PARAMETER NEGOTIATION (PN)
- INTERNET PROTOCOL (IP)

Chapter 8 - NETWORKS

- NETWORK CONFIGURATION
- NETWORK TECHNOLOGIES
- DATA NETWORKS
- NETWORK MANAGEMENT

Chapter 9 - SYSTEMS

- PUBLIC SWITCHED TELEPHONE NETWORKS (PSTNS)
- PRIVATE TELEPHONE SYSTEMS
- INTER-EXCHANGE SYSTEM
- INTERNET
- CABLE TELEVISION SYSTEMS
- RESIDENTIAL CORDLESS
- MOBILE TELEPHONE
- AIRCRAFT TELEPHONES
- SATELLITE TELEPHONE
- WIRELESS LOCAL LOOP (WLL)

Chapter 10 - VOICE OVER DATA NETWORKS

- INTERNET PROTOCOL (IP) TELEPHONY SYSTEMS
- SS7 AND INTERNET PROTOCOL (IP) SIGNALING SYSTEMS

Chapter 11 - SERVICES

- VOICE COMMUNICATIONS
- DATA COMMUNICATIONS
- VIDEO COMMUNICATIONS
- DISTRIBUTION SERVICES
- BEARER SERVICES
- TELESERVICES

Chapter 12 - CALL PROCESSING

- DISTINCTIVE RINGING
- CALL HOLD
- CALL FORWARDING
- SELECTIVE CALL FORWARDING
- SELECTIVE CALL ACCEPTANCE
- CONFERENCE CALL
- CALL PICKUP
- CALL TRANSFER
- CALL WAITING (CW)
- CALLING LINE IDENTIFICATION (CLI)
- HUNTING
- VOICE DIALING
- NIGHT SERVICE
- AUTOMATIC CALLBACK
- AUTOMATED ATTENDANT SYSTEM
- AUTOMATIC CALL DISTRIBUTION (ACD)
- FAX ON DEMAND (FOD)
- INTERACTIVE VOICE RESPONSE (IVR)
- VOICE MAIL (VM)





About the Author

Mr. Lawrence Harte has over 29 years of experience in the electronics industry including company leadership, product management, development, marketing, design, and testing of telecommunications (cellular), radar, and microwave systems. He has been issued patents relating to cellular technology. He has authored over 75 articles on related subjects and has been a speaker and panel moderator at industry trade events. Mr. Harte earned executive MBA at Wake Forest University and received his Bachelors degree from University of the State of New York. During the TDMA digital cellular standard development process, Mr. Harte served as an editor and voting company representative for the Telecommunications Industries Association (TIA) TR45.3, digital cellular standards committee. As of 2003, Mr. Harte had authored and co-authored over 20 books relating to telecommunications technology. He has served as a consultant and expert witness for leading companies including Ericsson, Siemens, VLSI, AMD, Casio, Samsung, Sony, ATT, Nokia, Hughes and many others.

Description

This book provides the fundamentals of signal processing, signaling control, can call processing technologies that are used in telecommunication systems. Covered are the key facets of voice and data communications, ranging from such basics as to how a telephone set works to more complex topics as how to send voice over data networks and the ways calls are processed in public and private telephone systems.

The reader will learn about analog and digital signals, signal modulation, channel coding, and other types of signal processing. Copper wire, radio, and optical transmission systems are explained. Circuit and packet switching technologies are described along with the E&M line trunk signaling and SS7 control systems that are used to manage them. Explained or the different types of communication protocols such as IP, TCP, UDP and RTP, their stack layers, and how the perform parameter negotiation. The operation of ATM, Frame Relay, X.25, Internet, and network technologies are explained. Introductions to public and private communication systems including the PSTN, PBX, computer telephony integration (CTI), voice over Internet protocol (VoIP), mobile telephone, and satellite systems are provided. Finally, the book provides details on the steps used for call processing in public and private telephone systems.

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