Winter 2010 ESCC/Internet2 Joint Techs

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Circuit Switching Principles: Back to Basics

Time 01/31/10 01:00PM-02:30PM

Session Abstract

Many of the published texts fail to convey any of the key principles of circuit switched networks because they regurgitate every tiny detail of the framing and overhead arrangements within SONET and OTN and omit a more descriptive initial approach. They also fail to address any of the techniques routinely employed in real-world networks to diagnose problems

This tutorial will start by answering some simple, and seemingly naive questions, such as defining a circuit and discussing what a
cross-connect represents. The framing layers in SONET/SDH and OTN will then be visualized in terms of our instinctive grasp of how circuits
operate. The flow of alarms caused by failures in a network will be described using some non-trivial examples based on real networks that
the author maintains. We will also discuss the use of diagnostic techniques such as loops and TAPs within DWDM and SONET networks. Finally, some more advanced topics will be introduced including the transmission of PDH (e.g. T1) and Ethernet signals over a SONET bearer.


Speaker John Graham Indiana University

Presentation Media

media item thumbnail Principles of Circuit Switched Networks (pdf)

Speaker John Graham Indiana University

Speaker Josef Voltech CESnet

Secondary tracks Tutorials

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