Tag: PT = 0x20

Lesson 5/PT = 0x20/16 ODU1 – Mapping/Multiplexing 16 ODU1 Tributary Signals into an ODU3 Server Signal

This blog post presents a video that shows how to map/multiplexing as many as 16 ODU1 tributary signals into an ODU3 server signal, using the PT = 0x20 approach.

Mapping/Multiplexing 16 ODU1 Tributary Signals into an ODU3 Server Signal (PT = 0x20)

This blog post includes a video that shows how we map and multiplex as many as 16 ODU1 Tributary Signals into an ODU3 Server Signal, using the PT = 0x20 Approach.

In this video, we discuss the following:

  • Using the AMP (Asynchronous Mapping Procedure) to map the ODU1 tributary signals into their respective ODTU13 signal/frames.
  • How to combine these ODTU13 signals together and to map them into an ODU3 payload.
  • Transporting these AMP Justification parameters from the Source PTE (where we map/multiplex these ODU1 tributary signals into the ODU3 server signal) to the Sink PTE (where we de-multiplex and de-map out the ODU1 tributary signals).
  • Multiplex Structure Identifiers within this type of ODU3 signal.

You can view this video below.

Continue reading “Lesson 5/PT = 0x20/16 ODU1 – Mapping/Multiplexing 16 ODU1 Tributary Signals into an ODU3 Server Signal”

Lesson 5/PT = 0x20/4 ODU2 – Mapping/Multiplexing 4 ODU2 Tributary Signals into an ODU3 Server Signal

This blog post presents a video on how to map/multiplex as many as 4 ODU2 tributary signals into an ODU3 server signal, using the PT = 0x20 approach.

Mapping/Multiplexing 4 ODU2 Tributary Signals into an ODU3 Server Signal using the PT = 0x20 Scheme.

This blog post includes a video that shows how we map and multiplex as many as 4 ODU2 Tributary Signals into an ODU3 Server Signal, using the PT = 0x20 Scheme.

In this video we discuss the following:

  • Sub-dividing an ODU2 tributary signal into its 2.5 Gbps time-slots.
  • Use the AMP (Asynchronous Mapping Procedure) to map each ODU2 tributary signals into an ODTU23 signal/frame.
  • How to combine these ODTU23 signals and map them into an ODU3 payload.
  • Transporting the AMP Justification Parameters from the Source PTE (where we map/multiplex the ODU2 tributary signals into the ODU3 server signal) to the Sink PTE (where we de-multiplex and de-map out the ODU2 tributary signals).
  • The Multiplex Structure Identifiers within this type of ODU3 signal.

You can view this video below.

Continue reading “Lesson 5/PT = 0x20/4 ODU2 – Mapping/Multiplexing 4 ODU2 Tributary Signals into an ODU3 Server Signal”

OTN – Lesson 10 – Video 1M – Entire Source Direction Path – All Atomic Functions (ODU Multiplexed Applications)

This post presents the 1st of the 6 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Multiplexed Applications). This post focuses on the Source Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 1 – The Entire Source Direction Path – All Atomic Functions (ODU Multiplexed Applications)

Check Out the Video Below

Click HERE to Go to Video 2 – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

Click HERE to return to the Main Lesson 10 Page – Multiplexed Applications

What We Cover in this Video

Video 1 (of the Multiplexed ODu4 System Videos) covers the following topics.

  • A brief review of Multiplexed Applications:
    • The PT = 0x20 Approach, and
    • The PT = 0x21 Approach
  • A brief review of the ITU-T G.798 Atomic Function’s support of the Multiplexed Applications
    • The ODUkP/ODU[i]j_A_So/Sk Functions (for PT = 0x20 Applications), and
    • The ODUkP/ODUj-21_A_So/Sk Functions (for PT = 0x21 Applications)
  • Our Application Example: 80 Channels of 1000BASEX -> ODU0 -> ODU4
  • ODU0P/CBR_ETC1000X-A_So (1Gbps Ethernet Adaptation Source Function)
  • Main Purpose: To take a 1000BASE-X (1Gbps Ethernet signal) and to map this signal into an ODU0 signal using the GMP-TTT Mapping Procedure.
    • Generates a Default PMOH within the outbound ODU0 signal.
    • Sends the ODU0 signal towards the downstream ODU0_TT_So function for further processing
    • On-Board Clock Generator
      • Synthesizes a 1.244160GHz Clock signal (e.g., the ODU0 bit-rates per ITU-T G.709) along with the AI_CK, AI_FS, and AI_MFS output signals.
    • ODU0 Overhead Settings
      • PT (Payload Type) within the PSI Message – set to 0x07 for 1000BASE-X mapped into an ODU0.
      • CI_SSF -> CSF bit-field within the outbound PSI Message (of OPU0 Frame)
  • ODU0_TT_So Function
  • Main Purpose: To compute a Real (and Correct) PMOH and insert data into its ODU0 data-stream.
    • The role of this function is very similar to what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).
  • ODUkP/ODUj-21_A_So Function (ODUk to ODUj Multiplex Source Function)
  • Main Purpose: In this example, the ODUkP/ODUj-21_A_So function will map and multiplex 80 ODU0 signals into an OPU4/ODU4 server signal.
    • Convert each ODUj tributary signal into an Extended ODUj signal by attaching the FAS and MFAS fields to each ODUj frame.
    • APS Support
      • Within the ODUj Tributary Signal itself, and
      • Within the ODUk Server Signal
    • Can configure each ODUj tributaries to operate in the Locked Mode (e.g., it overwrites the ODUj tributary signal with the ODUj-LCK Maintenance signal and maps/multiplexes that signal into the ODUk server signal.
    • Setting the PT byte (within the outbound ODUk server signal to 0x21).
    • Quick Review of the MSI bytes (within each outbound PSI Message).
    • The OMFI Byte-field (for ODU4 Multiplexed Applications ONLY).
    • We set the PMOH within the ODUk Server Signal to the Default Values. Route this signal to the downstream ODUk_TT_So Function.
  • ODUk_TT_So Function
  • Main Purpose: To compute a Real (and Correct) PMOH and insert data into its ODU4 data-stream.
    • The role of this function is the same as what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).
  • OTUk/ODUk_A_So Function
  • Main Purpose: To map an ODU4 client signal into the OTU4 Server signal.
    • The role of this function is the same as what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).

In Figure 1, I highlight the Atomic Functions that we discuss in Video 1.

ODU4/OTU4 Multiplexed System with the Source Direction Atomic Functions Highlighted

Figure 1, Illustration of the ODU4/OTU4 System, with the Atomic Functions, that we discuss in Video 2, highlighted

You Can Also Check Out the Video Below:

Click HERE to Go to Video 2 – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

Click HERE to return to the Main Lesson 10 Page – Multiplexed Applications

Lesson 5 – PT = 0x20 Approach

This blog post provides information and Video Training on the PT = 0x20 Approach for Mapping/Multiplexing Lower-Speed ODUj Tributary Signals into an ODUk Server Signal.

Lesson 5 – PT = 0x20 Approach to Mapping/Multiplexing Lower-Speed ODUj Tributary Signals into an ODUk Server Signal.

This portion of Lesson 5 presents information, along with a Training Video on how we Map and Multiplex Lower-Speed ODUj Tributary Signals into a Higher-Speed ODUk Server Signal, using the PT = 0x20 Approach.

In all, this Lesson includes the following four (4) videos that discuss mapping/multiplexing lower-speed ODUj Tributary Signals into an OPUk/ODUk Server Signal using the PT = 0x20 scheme.

Introduction to the PT = 0x20 Scheme and Mapping/Multiplexing up to 2 ODU0 Tributary Signals into an ODU1 Server Signal

This video covers the following topics.

  • An overall discussion of the PT = 0x20 Scheme to Mapping and Multiplexing Lower-Tributary ODUj signals into an ODUk Server signal.
  • How we use the PT =0x20 Approach to mapping/multiplexing 2 ODU0 signals into an ODU1 server signal. As this video discusses this particular mapping/multiplexing scheme, it will cover the following items in detail.
    • Using the AMP (Asynchronous Mapping Procedure) to map each ODU0 tributary signal into an ODTU01 frame/signal.
    • How we combine each ODTU01 signal together and map this data into the ODU1 payload.
    • Transporting these AMP Justification parameters from the Source PTE (where we map/multiplex these ODU0 tributary signals into the ODU1 server signal) and the Sink PTE (where we de-multiplex and de-map out the ODU0 tributary signals).
    • The Multiplexed Structure Identifier within this type of ODU1 server signal.

You can watch the Video Training that Introduces the PT = 0x20 Scheme and also discusses Mapping/Multiplexing up to 2 ODU0 Tributary Signals into an ODU1 Server, below.

Continue reading “Lesson 5 – PT = 0x20 Approach”