OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario Video

In this video, we presume that some ODUk- (or OTUk-) Layer circuitry is declaring a certain defect condition. We then determine how ODU-layer circuitry is expected to respond.

OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario for Multiplexed and Non-Multiplexed Applications

This video summarizes each of the various defects that OTN circuitry can declare/clear at the ODU-Layer.  

This video also describes how ODU-Layer circuitry is expected to respond to each of these ODU-Layer (or upstream OTU-Layer) defects.  

  • Should it transmit PM-BDI (Path Monitoring – Backward Defect Indicator) upstream?
  • Should it replace the under-lying 100oBASE-X or 100GBASE-R client signal with either the Link or Local Fault Indicator?  

NOTE:  This video covers both Non-Multiplexed and Multiplexed Applications.

Continue reading “OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario Video”

OTN – Lesson 10 – Video 6M – End of ODU-Layer/Multiplexed Sink Circuitry

This post presents the 6th of the 6 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 6 – The ODU0_TT_Sk and ODUkP/CBR_ETC1000X_A_Sk Atomic Functions

This blog post contains a video that wraps up our discussion of the Sink (or Receive) Atomic Function circuitry for the ODU-Layer/Multiplexed Applications.  

More specifically, this video includes a discussion of the following Atomic Functions.

  • ODU0_TT_Sk Function, and
  • ODU0P/CBR_1000X-g_A_Sk Function

Continue reading “OTN – Lesson 10 – Video 6M – End of ODU-Layer/Multiplexed Sink Circuitry”

OTN – Lesson 10 – Video 5N – ODUk_TT_Sk Atomic Function

This post presents the 5th of the 7 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Non-Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions. More specifically, this post presents a video that discusses how the ODUk_TT_Sk Atomic Function declares and clears the PM-dDEG defect condition.

OTN – Lesson 10 – Video 5 – The ODUk_TT_Sk Atomic Function

This blog post presents a video that continues our discussion of the ODUk_TT_Sk Atomic Function.  

This video covers the following features within the ODUk_TT_Sk Atomic Function.

  • How it declares and clears the dDEG (Path Signal Degrade) defect condition.
  • What the ODUk_TT_Sk function do with its AI_TSF Output pin whenever it declares a Service-Affecting defect condition.
  • What the ODUk_TT_Sk function do with its AI_TSD Output pin whenever it declares the dDEG (Signal Degrade) defect condition.  
  • Defect Correlation Equation Analysis
  • Consequent Equation Analysis 
  • Performance Monitoring Equation Analysis

Continue reading “OTN – Lesson 10 – Video 5N – ODUk_TT_Sk Atomic Function”

OTN – Lesson 9 – Video 11 – OTU Layer Defect Handling Requirements and Scenarios

In this video, we presume that some OTUk-Layer circuitry is declaring a certain defect condition. We then determine how OTU (and in some cases) ODU-layer circuitry is expected to respond.

OTN – Lesson 9 – Video 11 – OTU Layer Defect Scenarios

This blog post presents a video that discusses each of the various defects that OTN equipment can declare at the OTU Layer.  Additionally, this video will describe how OTU Layer circuitry is expected to respond to and handle each of these defect conditions.  

This video will state whether OTU Layer circuitry should:

  • Transmit the SM-BDI Indicator upstream, or 
  • Transmit the ODU-AIS Maintenance Signal downstream, 
  • Increment Certain Performance Monitoring parameters, or
  • Halt Incrementing Certain Performance Monitoring parameters.

In response to each of the type of defects that OTU Layer circuitry can declare.

This video covers both Single-Lane (e.g., OTSi/OTUk_A_Sk) and Multi-Lane (e.g., OTSiG/OTUk_A_Sk) applications. 

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OTN – Lesson 9 – Video 8 – OTUk_TT_Sk Function

This post presents the 8th of the 11 Videos that covers training on Performance Monitoring at the OTUk Layer. This post focuses on the Sink Direction OTU-Layer Atomic Functions.

OTN – Lesson 9 – Video 8 – OTU Layer Sink Direction Circuitry/Functionality – Part 6

This blog post includes another video that continues our discussion of the OTUk_TT_Sk Atomic Function.  In this video, we focus on the following aspects of this function.  

  • How it declares and clears the dIAE (Input Alignment Error) Defect Condition
  • How it declares and clears the dBIAE (Backward Input Alignment Error) Defect Condition.
  • The dTIM (Trail Trace Identifier Mismatch) Defect Condition.  
  • The dDEG (Section – Signal Degrade) Defect Condition
  • The type of signals that the OTUk_TT_Sk function outputs via the OTUk_AP Interface – in particular the AI_TSF and AI_TSD output signals.  

Continue reading “OTN – Lesson 9 – Video 8 – OTUk_TT_Sk Function”