OTN – Lesson 12 – Continuation of Discussion of APS Commands for Protection Switching – Part II

This blog post presents a video that continues our discussion of APS Commands via the APS/PCC Communication Protocol. This video serves as Part 2 of this discussion.

Lesson 12 – Video 9 – Detailed Discussion of APS Commands – Video 2

This blog post continues our discussion of APS Commands and the APS/PCC Communication Protocol. This video serves as Video 2 in this discussion. This blog discussed implementing the LoP (Lock Out of Protection) and Force Switch Commands using the APS/PCC Communication Protocol.

In particular, this video will discuss the following topics:

  • Executing the LoP (Lock Out of Protection Command) – for both the 1+1 and 1:N Protection Architectures
    • What does the LoP Command do to the Protection Group?
    • How do we Implement this Command?
    • How do we Terminate this Command (to resume Normal Operation)
  • Executing the Force Switch – Normal Traffic Signal to Protection (for the 1+1 Protection Architecture)
    • How does this command’s execution affect the Protection Group’s operation?
    • How do we Implement this Command?
    • Implementing the Force Switch – NULL Test Signal to Protection Command – to resume Normal Operation.
  • Executing the Force Switch – Normal Traffic Signal n to Protection (for the 1:N Protection Architecture)
    • How does this command’s execution affect the Protection Group’s operation?
    • How do we Implement this Command?
    • Implementing the Force Switch – Extra Traffic Signal to Protection Command – to resume Normal Operation.

To Learn More About the LoP (Lock Out of Protection) and Force Switch Commands, Check Out the Video Below.

Continue reading “OTN – Lesson 12 – Continuation of Discussion of APS Commands for Protection Switching – Part II”

OTN – Lesson 12 – Introduction to APS and the APS Communication Protocol for Protection Switching

This blog post presents a video that shows how to implement APS (Automati Protection Switching) both with and without using an APS Communication Protocol.

Lesson 12 – Video 8 – Detailed Discussion of APS without and with the APS Communication Protocol – Video 1

This blog post describes how we can implement APS (Automatic Protection Switching) without using an APS Communication Protocol. Afterward, this blog introduces how to implement APS using the APS Communication Protocol. This video serves as the first of several videos on this topic.

In particular, this video will discuss the following topics:

  • Executing APS without using the APS Communication Protocol
    • Under what conditions can we implement APS without using an APS Communication Protocol?
    • Why can we implement APS (without an APS protocol) in this case?
    • When not supporting an APS Communication Protocol, the Architecture/Design of the Protection-Switching Controllers.
    • How to implement Automatic Protection Switching – without implementing an APS Communication Protocol.
  • Executing APS with an APS Communication Protocol
    • Under what conditions must we implement APS with an APS Communication Protocol?
    • Why do we need to use an APS Communication Protocol for these cases?
    • How to implement Automatic Protection Switching – while using an APS Communication Protocol
      • Introduction to the APS/PCC Field for OTN/Linear Protection Switching Applications (per ITU-T G.873.1).
      • The Architecture/Design of the Protection-Switching Controllers – 1+1 Protection Architecture
      • The Architecture/Design of the Protection Switching Controllers – 1:N Protection Architecture
      • The NR (No Request) Command

To Learn How to Implement APS, with and without an APS Communication Protocol, Check Out the Video Below.

Continue reading “OTN – Lesson 12 – Introduction to APS and the APS Communication Protocol for Protection Switching”