Discover the Principles and Potential of SDH Networks.
"SDH Payloads" describes the payload capabilities of SDH links and the methods of carrying different types of payload over an SDH network. This course covers such topics as virtual containers and the transport of ATM, IP and Ethernet traffic over an SDH network.
Course aim: After completing this course a trainee will be able to describe how different types of traffic are transported over an SDH network. The role and significance of Tributary Units is discussed and the methods of carrying plesiochronous, synchronous and asynchronous traffic described. The role of the different types of SDH overhead is also explained.
Pre-requisites: Understanding of the principles of the SDH and an understanding of the principles of packet switching including ATM and the Internet Protocol (IP); knowledge of the principles and components of an Ethernet LAN would also be advantageous. It is recommended that SyncNet course B: "Principles of SDH", TransNet course D "ATM principles", and the Ethernet courses A and B ("Ethernet fundamentals" and "Ethernet networks") are studied before attempting this course
A Transmission principles
B SDH principles
C Optical line systems inc WDM
D SDH payloads
E SDH networks
F SDH network management and maintenance
- Those studying for a career in telecommunications and who require a detailed knowledge of modern optical broadband transmission networks.
- Technical staff involved in the operation, installation or maintenance of SDH-based broadband networks.
AU payloads: Transporting a 140 Mbit/s signal within a STM-1 frame
revision of the concept of virtual containers
structure of a VC-4
concept of an Administrative Unit (AU)
operation and use of an AU pointer
role and operation of byte justification.
TU payloads: Mapping 34 Mbit/s signals into an STM-1 frame
structure of a VC-3
overview of the concept of Tributary Units (TU)
transporting VC-3s within a VC-4
operation and use of TU pointers.
TUG payload: Concept of a Tributary Unit Group (TUG)
the different types of TUG and their payload capacity
description of the use of TU-12s, TUG-2s and TUG-3s to map up to sixty-three 2 Mbit/s signals into a single 155 Mbit/s STM-1 frame
transporting groups of CEPT and ANSI signals within the same STM-1 frame
asynchronous and byte synchronous 2 Mbit/s (VC-12) payloads
comparison of the locked and unlocked configurations of byte synchronous operation.
Path overhead (POH): Review of the role of Section Overheads (SOH) of an STM frame
role of the Path Overhead (POH) of a Virtual Container (VC)
comparison of the roles of Multiplex Section Overhead (MSOH), Regenerator Section Overhead (RSOH) and POH
structure of the POH in higher-order and lower-order VCs and function of the individual POH bytes.
ATM over SDH: Sharing the bandwidth of an SDH-based optical link with different types of traffic
overview of the benefits of the Asynchronous Transfer Mode (ATM)
basic structure of an ATM cell
interfacing ATM switches with SDH multiplex equipment
mapping ATM cells into a VC-4 virtual container of an STM-1 frame
role of the Transmission Convergence (TC) ATM protocol
function of those STM section and path overheads used by ATM equipment.
IP over SDH: Overview of the use of ATM virtual circuits to provide a differentiated quality of service for IP traffic
transporting IP traffic over an SDH network without the use of ATM
functions and operation of the Point to Point Protocol (PPP)
mapping PPP frames into a VC-4 STM virtual container
comparison of the benefits of the use of ATM and PPP
overview of the use of Wavelength Division Multiplexing (WDM) to transport IP traffic over an optical network.
Ethernet over SDH: The disadvantages of the use of PPP
introduction to the Generic Framing Procedure (GFP) and its use in interconnecting Ethernet Local Area Networks
principles and advantages of virtual concatenation
role and principles of the Link Capacity Adjustment Scheme (LCAS)
summary and comparison of the various methods of transporting IP traffic over an SDH Network.
For more information visit http://www.researchandmarkets.com/reports/c43368
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|Date:||Oct 11, 2006|
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