Lesson 12 – Video 11 – Detailed Discussion of APS Commands – Video 4
This blog post completes our discussion of APS Commands and the APS/PCC Communications Protocol. This video serves as Video 4 in this discussion. This blog post briefly discusses the SD, Manual Switch, Wait-to-Restore (WTR), Reverse-Request (RR), and Do-Not-Revert (DNR) APS Commands.
Additionally, this video defines and discusses the 1 Phase APS Communication, 2 Phase APS Communication and 3 Phase APS Communication Procedures.
Finally, this video will define APS Recovery Time. This video will also present the ITU-T G.873.1 APS Recovery Time Requirements.
More specifically, this video will cover the following topics:
Detailed Topics Discussed
- APS Commands (Continued)
- SD_W (Signal Degrade in the Working Transport Entity)
- SD_P (Signal Degrade in the Protection Transport Entity)
- WTR (Wait-to-Restore)
- RR (Reverse Request)
- DNR (Do Not Revert)
- 1 Phase APS Communication
- Advantages of 1 Phase
- Disadvantages of 1 Phase
- 2 Phase APS Communication
- Advantages of 2 Phase
- Disadvantages of 2 Phase
- 3 Phase APS Communication
- Advantages of 3 Phase
- Disadvantages of 3 Phase
- Definition of APS Recovery Time