Legacy Technologies: Channelized TDM Transmission Systems (Telecom Modules Book 17)
Legacy Technologies: Channelized TDM Transmission Systems
From about 1960 to 2000, the telecom network was constructed of high-capacity transmission systems shared amongst users by employing Channelized Time-Division Multiplexing (TDM), also known as Synchronous Time-Division Multiplexing.
These systems are now referred to as legacy systems, meaning left over from a previous era… but that does not mean they have disappeared. Telephone companies tend to keep existing systems running for as long as possible.
In this module, you’ll learn the channelized DS0-DS1-DS3 digital hierarchy, and technologies like T1 and SONET that implement it.
We’ll review how traffic from many different circuits is organized to be communicated together 8,000 times per second in transmission frames.
The module is completed with an overview of the now-almost-completely-obsolete ISDN services.
Telecom Module 17
Detailed Outline
17 Legacy Technology: Channelized TDM Transmission Systems
17.1 The Digital Hierarchy: Legacy Channelized Transmission Speeds
…… 17.1.1 Kilo, Mega, Giga, Tera
…… 17.1.2 DS0
…… 17.1.3 DS1 and E1
…… 17.1.4 DS2
…… 17.1.5 DS3
…… 17.1.6 STM and SDH
17.2 Digital Carrier Systems: Legacy Transmission Technologies
…… 17.2.1 Technologies
…… 17.2.2 Carrier Systems
…… 17.2.3 T1
…… 17.2.4 T3 and Bit-Interleaved Multiplexing
…… 17.2.5 SONET and Byte-Interleaved Multiplexing
…… 17.2.6 SDH
…… 17.2.7 Line Speed vs. Technology
17.3 Framing
…… 17.3.1 Synchronous Time-Division Multiplexing
…… 17.3.2 Framing and Transmission Frames
…… 17.3.3 DS1 Frame
…… 17.3.4 STS-1 (DS3) Frames
…… 17.3.5 SONET Optical Carrier Frames
…… 17.3.6 Advantages and Disadvantages of Channels
17.4 ISDN
…… 17.4.1 Basic Rate Interface (BRI)
…… 17.4.2 Obsolescence of BRI
…… 17.4.3 Primary Rate Interface (PRI)
…… 17.4.4 PRI Physical Connection
…… 17.4.5 T1 vs. PRI
ASIN : B0BTZYH9KT
Publisher : Teracom Training Institute; 6th edition (February 5, 2023)
Publication date : February 5, 2023
Language : English
File size : 1577 KB
Text-to-Speech : Enabled
Screen Reader : Supported
Enhanced typesetting : Enabled
X-Ray : Not Enabled
Word Wise : Not Enabled
Sticky notes : On Kindle Scribe
Print length : 36 pages
$4.99
Price: $4.99
(as of Mar 21, 2024 11:57:46 UTC – Details)
Legacy Technologies: Channelized TDM Transmission Systems
From about 1960 to 2000, the telecom network was constructed of high-capacity transmission systems shared amongst users by employing Channelized Time-Division Multiplexing (TDM), also known as Synchronous Time-Division Multiplexing.
These systems are now referred to as legacy systems, meaning left over from a previous era… but that does not mean they have disappeared. Telephone companies tend to keep existing systems running for as long as possible.
In this module, you’ll learn the channelized DS0-DS1-DS3 digital hierarchy, and technologies like T1 and SONET that implement it.
We’ll review how traffic from many different circuits is organized to be communicated together 8,000 times per second in transmission frames.
The module is completed with an overview of the now-almost-completely-obsolete ISDN services.
Telecom Module 17
Detailed Outline
17 Legacy Technology: Channelized TDM Transmission Systems
17.1 The Digital Hierarchy: Legacy Channelized Transmission Speeds
…… 17.1.1 Kilo, Mega, Giga, Tera
…… 17.1.2 DS0
…… 17.1.3 DS1 and E1
…… 17.1.4 DS2
…… 17.1.5 DS3
…… 17.1.6 STM and SDH
17.2 Digital Carrier Systems: Legacy Transmission Technologies
…… 17.2.1 Technologies
…… 17.2.2 Carrier Systems
…… 17.2.3 T1
…… 17.2.4 T3 and Bit-Interleaved Multiplexing
…… 17.2.5 SONET and Byte-Interleaved Multiplexing
…… 17.2.6 SDH
…… 17.2.7 Line Speed vs. Technology
17.3 Framing
…… 17.3.1 Synchronous Time-Division Multiplexing
…… 17.3.2 Framing and Transmission Frames
…… 17.3.3 DS1 Frame
…… 17.3.4 STS-1 (DS3) Frames
…… 17.3.5 SONET Optical Carrier Frames
…… 17.3.6 Advantages and Disadvantages of Channels
17.4 ISDN
…… 17.4.1 Basic Rate Interface (BRI)
…… 17.4.2 Obsolescence of BRI
…… 17.4.3 Primary Rate Interface (PRI)
…… 17.4.4 PRI Physical Connection
…… 17.4.5 T1 vs. PRI
ASIN : B0BTZYH9KT
Publisher : Teracom Training Institute; 6th edition (February 5, 2023)
Publication date : February 5, 2023
Language : English
File size : 1577 KB
Text-to-Speech : Enabled
Screen Reader : Supported
Enhanced typesetting : Enabled
X-Ray : Not Enabled
Word Wise : Not Enabled
Sticky notes : On Kindle Scribe
Print length : 36 pages
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