OTN Related Topics within this Blog

OTN Related Blog


OTN Related Topics within this Blog

General Topics

OTUk Related Topics

OTUk Framing Format and OTUk-SMOH (Section Monitoring Overhead)

OTUk Maintenance Signals

Other Forms of OTUk Signals

  • OTUk Trail-Trace Identification Message

OTUk-Related Defects

OTUk-Related Errors

OTUk-Related Performance Monitoring Parameters

OTUk Atomic Functions

Functions that are Applicable to OTU1 through OTU4 Rates

  • OTSi/OTUk-a_A_Sk (OTSi to OTUk Adaptation Sink Function with FEC)
  • OTSi/OTUk-a_A_So (OTSi to OTUk Adaptation Source Function with FEC)
  • OTSi/OTUk-v_A_Sk (OTSi to OTUk Adaptation Sink Function with Vendor-Specific FEC)
  • OTSi/OTUk-v_A_So (OTSi to OTUk Adaptation Source Function with Vendor-Specific FEC)

Functions that are Applicable to OTU1 through OTU2 Rates

  • OTSi/OTUk-b_A_Sk (OTSi to OTUk Adaptation Sink Function without FEC)
  • OTSi/OTUk-b_A_Sk (OTSi to OTUk Adaptation Source Function without FEC)

Functions that are Applicable to OTU3 and OTU4 Rates ONLY

Functions that are Applicable to OTU3 Rates ONLY

  • OTSiG/OTUk-b_A_Sk (OPSM to OTUk Adaptation Sink Function without FEC)
  • OTSiG/OTUk-b_A_So (OPSM to OTUk Adaptation Source Function without FEC)

Functions that apply to ALL OTUk Rates up to OTU4

Interfacing a High-Speed OTUk Signal to the Outside World

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ODUk Related Topics

ODUk Framing Format and ODUk-PMOH (Path Monitoring Overhead)

Other Forms of ODUk Signals

ODUk Maintenance Signals

ODUk Related Defects

ODUk Atomic Functions

  • ODUk_TT_Sk (ODUk Trail Termination – Sink) Function
  • ODUk_TT_So (ODUk Trail Termination – Source) Function
  • OTUk/ODUk_A_Sk (OTUk/ODUk Adaptation – Sink) Function
  • OTUk/ODUk_A_So (OTUk/ODUk Adaptation – Source) Function
  • ODUkP/ODUj-21_A_Sk 
  • ODUkP/ODUj-21_A_So

OPUk Related Topics

OPUk Related Defects

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Mapping of non-OTN Client Signals into OPUk/ODUk Signals

Multiplexing/Mapping Lower-Speed ODUj Signals into Higher-Speed ODUk Signals

PT = 0x20 – Approach to Multiplexing/Mapping

PT = 0x21 – Approach to Multiplexing/Mapping

  • ODU0 ⇒ ODTU2.1 ⇒ x8 ⇒ ODTUG2 ⇒ OPU2 ⇒ ODU2
  • ODU1 ⇒ ODTU12 ⇒ x4 ⇒ ODTUG2 ⇒ OPU2 ⇒ ODU2
  • ODUflex ⇒ ODTU2.ts ⇒ x8/ts ⇒ ODTUG2 ⇒ OPU2 ⇒ ODU2
  • ODU0 ⇒ ODTU3.1 ⇒ x32 ⇒ ODTUG3 ⇒ OPU3 ⇒ ODU3
  • ODU1 ⇒ ODTU13 ⇒ x16 ⇒ ODTUG3 ⇒ OPU3 ⇒ ODU3
  • ODU2 ⇒ ODTU23 ⇒ x4 ⇒ ODTUG3 ⇒ OPU3 ⇒ ODU3
  • ODU2e ⇒ ODTU3.9 ⇒ x3 ⇒ ODTUG3 ⇒ OPU3 ⇒ ODU3
  • ODUflex ⇒ ODTU3.ts ⇒ x32/ts ⇒ ODTUG3 ⇒ OPU3 ⇒ ODU3
  • ODU0 ⇒ ODTU4.1 ⇒ x80 ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4
  • ODU1 ⇒ ODTU4.2 ⇒ x40 ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4
  • ODU2 ⇒ ODTU4.8 ⇒ x10 ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4
  • ODU2e ⇒ ODTU4.8 ⇒ x10 ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4
  • ODU3 ⇒ ODTU4.31 ⇒ x2 ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4
  • ODUflex ⇒ ODTU4.ts ⇒ x80/ts ⇒ ODTUG4 ⇒ OPU4 ⇒ ODU4

Tandem Connection Monitoring (TCM) Topics

  • What is Tandem Connection Monitoring and Why Do We Need it?
  • The TCMOH (TCM Overhead) Field
  • Cascaded Domains
  • Nested Domains

Tandem Connection Monitoring Atomic Functions

  • ODUT/ODU_A_So (ODUT to ODUP Adaptation Source) Function
  • ODUT_TT_So (ODUT Trail Termination Source) Function
  • ODUT/ODU_A_Sk (ODUT to ODUP Adaptation Sink) Function
  • ODUT_TT_Sk (ODUT Trail Termination Sink) Function
  • TCM Controller Function

Protection Switching (Linear)

1+1 Protection-Switching Architecture

  • Permanent Bridge

1:N Protection-Switching Architecture

  • Broadcast Bridge

Unidirectional Protection-Switching

Bidirectional Protection-Switching

Reverting Protection-Switching

Non-Reverting Protection-Switching

  • The DNR (Do-Not-Revert) Command

Types of Monitoring (for Protection-Switching)

SNC/I – Sub-Network Circuit/Inherent Monitoring

  • What is SNC/I Monitoring – at the OTUk Layer?
  • When will the Tail-End circuitry declare SF for SNC/I Monitoring – at the OTUk Layer?
  • When will the Tail-End circuitry declare SD for SNC/I Monitoring – at the OTUk Layer?
  • What is SNC/I Monitoring – at the ODUk Layer?
  • When will the Tail-End circuitry declare SF for SNC/I Monitoring – at the ODUk Layer?
  • When will the Tail-End circuitry declare SD for SNC/I Monitoring – at the ODUk Layer?

SNC/S – Sub-Network Circuit/Sublayer Monitoring

  • What is SNC/S Monitoring?
  • When will the Tail-End circuitry declare SF for SNC/S Monitoring?
  • When will the Tail-End circuitry declare SD for SNC/S Monitoring?

SNC/Ne – Sub-Network Circuit/Non-Intrusive Monitoring – End-to-End

  • What is SNC/Ne Monitoring?
  • When will the Tail-End circuitry declare SF for SNC/Ne Monitoring?
  • When will the Tail-End circuitry declare SD for SNC/S Monitoring?

SNC/Ns – Sub-Network Circuit/Non-Intrusive Monitoring – Sublayer

  • What is SNC/Ns Monitoring?
  • When will the Tail-End circuitry declare SF for SNC/Ns Monitoring?
  • When will the Tail-End circuitry declare SD for SNC/Ns Monitoring

The APS/PCC Protection-Switching Protocol for Linear Protection Switching

  • The APS/PCC field-format for Linear-Protection-Switching
  • APS Command Priorities for Linear Protection-Switching
  • The LoP (Lock-Out of Protection) Command
  • The SF-P (Signal Fail in the Protection Transport Entity) Command
  • The SF-W (Signal Fail in the Working Transport Entity) Command

Protection Switching (ODUk Shared Ring)

2-Fibre/2-Lambda Shared-Ring Protection-Switching Systems

4-Fibre/4-Lambda Shared-Ring Protection-Switching Systems

Span-Switching

Ring-Switching

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