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Introduction to Digital Subscriber Line - DSL

Introduction to Digital Subscriber Line - DSL Book

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   Frame Relay

Frame relay is a packet-switching technology that provides dynamic bandwidth assignments. Frame relay systems are a simple bearer (transport only) technology and do not offer advanced error protection or retransmission. Frame relay were developed in the 1980s as a result of improved digital network transmission quality that reduced the need for error protection. Frame relay systems offer dynamic data transmission rates through the use of varying frame sizes.

This figure shows a frame relay system. This diagram shows a local area network (LAN) in San Francisco is connected to a LAN in New York. A virtual path is created through the frame relay network so data can rapidly pass through each frame relay switch as its path is previously established. When data is to be transferred through the LAN (e.g. a large image file), the data file passes through a FRAD that is the gateway to the frame relay network. The FRAD divides the data file from the LAN into variable length data frames. The FRAD sends and receives control commands to the frame relay network that allows the FRAD to know when and if additional data frames can be sent.

Frame Relay System Diagram

Frame Relay Diagram

   Related Digital Subscribe Lines - DSL Terms

Quadrature Phase Shift Keying (QPSK)
Carrierless Amplitude and Phase Modulation - CAP
Discrete Multitone Transmission -DMT
Copper Wire Frequency Response
Coaxial Cable Frequency Response
Bridge Tap Reflections
Audio Loading Coils
Line Splice Attenuation
ISDN Digital Subscriber Line - IDSL
High bit rate Digital Subscriber Line - HDSL
High Bit Rate Digital Subscriber Line 2nd Generation - HDSL2
Symmetric Digital Subscriber Line -SDSL
Asymmetric Digital Subscriber Line - ADSL
Asymetric Digital Subscriber Line Lite - ADSL-Lite
Asymetric Digital Subscriber Line 2nd Generation - ADSL2
Asymmetric Digital Subscriber Line 2nd Generation + - ADSL2+
Reach Extended ADSL - RE-ADSL
Bonded Asymmetric Digital Subscriber Line  - Bonded ADSL
Very high bit-rate Digital Subscriber Line - VDSL
Bridged DSL
DSL Modem
DSL Splitter
DSL Microfilters

   Digital Subscriber Lines - DSL Books

Introduction to Cable Television (CATV) Book

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Introduction to Digital Subscriber Lines - DSL

This book covers the different types of DSL systems, why DSL is so important to telephone operators, and what services it can offer. It explains how DSL technology allows a standard twisted copper wire to provide broadband (1 Mbps+) and ULTRA broadband (10 Mbps+) data and high quality broadband data, digital telephone and IPTV television services.

$14.99 Printed, $11.99 eBook

DSL For Dummies

Understanding Digital Subscriber Line Technology

Fundamentals Of Dsl Technology
DSL For Dummies
David Angell,Paperback - REV, Edition: 2,Series: For Dummies Series, English-language edition,Pub by Wiley, John & Sons, Incorporated
Understanding Digital Subscriber Line Technology
Thomas Starr, John M. Cioffi, Peter J. Silverman,Other Format - New Edition,Series: Prentice Hall Communications Engineering Series, English-language edition,Pub by Prentice Hall
Fundamentals Of Dsl Technology
Philip Golden,Hardcover - New Edition, English-language edition,Pub by AUERBACHs

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