Recorded Event

Date of Recording: Thursday, February 17, 2005

Duration: 105 minutes

Presenters: Steve Gorshe and Winston Mok, Principal Engineers

Cost: Free

Automatic Protection Switching (APS) Tutorial

Access to the webinar requires registration on PMC-Sierra's website and approval to view this webinar.

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What to Expect

This webinar will:

  • Explain the benefits of APS
  • Present architectures for:
    • Linear - 1+1, 1:n, SNCP
    • Ring BLSR, UPS
    • LCAS
  • Discuss how Design Engineers can implement APS using PMC-Sierra's solutions

Automatic Protection Switching (APS) is a key service restoration functionality built into the SONET and SDH standards to protect against line failures. This tutorial will review APS as described in the T1.105.01, ITU-T G.841 & ITU-T G.7042/Y.1305 industry standards.

About the Presenters


Steve Gorshe Steve Gorshe, Principal Engineer, Product Research Group, PMC-Sierra

Steve Gorshe, Ph.D. is a Principal Engineer in the Product Research Group and oversees research on ICs for SONET, optical transmission and access systems.

Currently Steve is a senior member of the IEEE and co-editor for the IEEE Communications Magazine's Broadband Access Series. He is the chief editor for the ANSI T1X1 Subcommittee, which is responsible for SONET and optical network interface standards. He is a recent recipient of the Committee T1 Alvin Lai Outstanding Achievement Award for his standards work and has been a technical editor for T1.105, T1.105.01, T1.105.02, and T1.105.07 within the SONET standard series as well as the ITU-T G.7041 (GFP) recommendation and the draft G.eota Ethernet over Transport Architecture recommendation. He has 24 patents issued or pending and several published papers.


Winston Mok Winston Mok, Principal Engineer, Communications Product Division, PMC-Sierra

Winston Mok is a Principal Engineer in the Communications Product Division and works on architectures for SONET and SDH devices and switching and grooming fabrics.

Winston is an active participant in the Optical Internetworking Forum (OIF), and the RapidIO Trade Association. He has a long history of involvement with the T1X1 standards body and holds several networking patents.

Who Should Attend

  • Design Engineers, Network Architects, Product Line Managers, Engineering Management and Marketing Managers of Telecom, Networking Equipment (Metro Transport, Routers, Multi-Service Switches, DSLAMs) & Wireless Infrastructure

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