OTN – Lesson 6 – Converting OTL3.4 Back into OTU3 – Video 1

This blog post contains a Video that serves as a first (of two) videos that discusses the functionality of the OTL3.4 Sink Terminal (aka OTSiG/OTUk_A_Sk Function). This video focuses on the dLOFLANE and dLOR defects.

OTN – Lesson 6 – Converting OTL3.4 Signals back into a Composite OTU3 Signal – Video 1 of 2

This blog post contains the first (of 2) videos that describe how we take an OTL3.4 Interface (or set of signals) and convert these signals back into a single (composite) OTU3 signal.

This video introduces the OTSiG/OTUk_A_Sk Atomic Function (a fancy word for OTL3.4 Sink Terminal).

NOTE: We don’t mention OTSiG/OTUk_A_Sk Atomic Function until Lesson 9. We call this function the OTL3.4 Sink Terminal.

This video discussed how the OTSiG/OTUk_A_Sk Function accepts electrical lane signals from an Optical Module (in the OTL3.4 format) and processes these signals by:

Checking to see if we should declare/clear the dLOS-P (Loss of Signal – Path) Defect condition with these Electrical Lane signals, and
Checking to see if we should declare/clear the dLOFLANE (Loss of Frame – of Logical Lane) defect condition.
Finally, we will discuss how the OTSiG/OTUk_A_Sk function checks each incoming OTL3.4 lane signal to see if it should declare the dLOR (Loss of Recovery) defect condition.

Continue reading “OTN – Lesson 6 – Converting OTL3.4 Back into OTU3 – Video 1”

OTN – Lesson 7 – Converting OTL4.4 Back into an OTU4 Signal – Video 3

This post presents both information and video training on how we take an OTL4.4 signal and recombine it back into a composite OTU4 signal. This post serves as the third of 3 videos for the OTL4.4 Sink Terminal.

In this video we focus on the Lane Alignment Recovery Block and Skew Compensation.

OTN – Lesson 7 – Converting OTL4.4 Signals back into a Composite OTU4 Signal – Video 3

This blog post presents the 3rd (of a set of 3 videos) that discusses how we convert an OTL4.4 Interface (or group of signals) back into a single (composite) OTU4 signal.

In particular, this video discusses the following:

It outlines how the OTSiG/OTUk_A_Sk function declares and clears the dLOR (Loss of Recovery) defect condition, for each of the 20 Logical Lanes, by walking through the Lane Alignment Recovery Block – LOR/OOR/IR State Machine diagram.
This video also discusses Lane-to-Lane Skew Compensation, and
How the OTSiG/OTUk_A_Sk function declares or clears the dLOL defect condition, and
How the OTSiG/OTUk_A_Sk function combines the 20 Logical Lanes back into a single (composite) OTU4 signal.

Continue reading “OTN – Lesson 7 – Converting OTL4.4 Back into an OTU4 Signal – Video 3”

OTN – Lesson 7 – Converting OTL4.4 Back into an OTU4 Signal – Video 2

This post presents both information and video training on how we take an OTL4.4 signal and recombine it back into a composite OTU4 signal. This post serves as the second of 3 videos for the OTL4.4 Sink Terminal.

OTN – Lesson 7 – Converting OTL4.4 Signals back into a Composite OTU4 Signal – Video 2 of 3

This blog post contains the 2nd of 3 videos that discusses how we convert an OTL4.4 interface (or set of signals) back into a single (composite) OTU4 signal.

This video discusses how we declare and clear the dLOFLANE (Loss of Frame of Logical Lane) defect condition (by walking through the OTL4.20 dLOFLANE/In-Frame State Machine.

This video also starts the discussion of how we declare the dLOR (Loss of Recovery) defect for each of the 20 Logical Lanes.

Continue reading “OTN – Lesson 7 – Converting OTL4.4 Back into an OTU4 Signal – Video 2”