Do it again, what's happened?

Do it again, what's happened?

Abbreviations

• 0xYY: Y is a value in hexadecimal presentation

• 3R: Re-amplification, Reshaping and Retiming

• ACT: Activation (in the TCM ACT byte)

• AI: Adapted Information

• AIS: Alarm Indication Signal

• APS: Automatic Protection Switching

• BDI: Backward Defect Indication

• BEI: Backward Error Indication

• BIAE: Backward Incoming Alignment Error

• BIP: Bit Interleaved Parity

• CBR: Constant Bit Rate

• CI: Characteristic Information

• CM: Connection Monitoring

• CRC: Cyclic Redundancy Check

• DAPI: Destination Access Point Identifier

• EXP: Experimental

• ExTI: Expected Trace Identifier

• FAS: Frame Alignment Signal

• FDI: Forward Defect Indication

• FEC: Forward Error Correction

• GCC: General Communication Channel

• IaDI: Intra-Domain Interface

• IAE: Incoming Alignment Error

• IrDI: Inter-Domain Interface

• JOH: Justification Overhead

• LSB: Least Significant Bit

• MFAS: Multi-Frame Alignment Signal

• MFI: Multi-frame Indicator

• MS: Maintenance Signal

• MSB: Most Significant Bit

• MSI: Multiplex Structure Identifier

• NNI: Network Node Interface

• OCh: Optical channel with full functionality

• OCI: Open Connection Indication

• ODU: Optical Channel Data Unit

• ODUk: Optical Channel Data Unit-k

• ODTUjk: Optical channel Data Tributary Unit j into k

• ODTUG: Optical channel Data Tributary Unit Group

• ODU-Xv: X virtually concatenated ODUk's

• OH: Overhead

• OMS: Optical Multiplex Section

• OM-OH: Optical Multiplex Section Overhead

• OMU: Optical Multiplex Unit

• ONNI: Optical Network Node Interface

• OOS: OTM Overhead Signal

• OPS: Optical Physical Section

• OPU: Optical Channel Payload Unit

• OPUk: Optical Channel Payload Unit-k

• OPUk-Xv: X virtually concatenated OPUk's

• OSC: Optical Supervisory Channel

• OTH: Optical Transport Hierarchy

• OTM: Optical Transport Module

• OTN: Optical Transport Network

• OTS: Optical Transmission Section

• OTS-OH: Optical Transmission Section Overhead

• OUT: Optical Channel Transport Unit

• OTUk: Optical Channel Transport Unit-k

• PCC: Protection Communication Channel

• PM: Path Monitoring

• PMI: Payload Missing Indication

• PMOH: Path Monitoring OverHead

• Ppm: parts per million

• PRBS: Pseudo Random Binary Sequence

• PSI: Payload Structure Identifier

• PT: Payload Type

• RES: Reserved for future international standardization

• RS: Reed-Solomon

• SAPI: Source Access Point Identifier

• Sk: Sink

• SM: Section Monitoring

• SMOH: Section Monitoring OverHead

• So: Source

• TC: Tandem Connection

• TCM: Tandem Connection Monitoring

• TS: Tributary Slot

• TxTI: Transmitted Trace Identifier

• UNI: User-to-Network Interface

• VCG: Virtual Concatenation Group

• VCOH: Virtual Concatenation Overhead

• vcPT: virtual concatenated Payload Type

The key words

The following layers are defined in OTN:

• OPUk: Optical payload unit k (k = 0, 1, 2, 3, 4)

• ODUk: Optical data unit k (k = 0, 1, 2, 3, 4)

• OTUk: Optical transport unit k (k = 1, 2, 3, 4)

• OCh: Optical channel, a single wavelength

• OMSn: Optical multiplex section of order n (Capacities for n = 0 and n = 16 are defined)

• OTSn: Optical transmission section of order n (Capacities for n = 0 and n = 16 are defined)

• OTM-n.m: Optical transport module of rate m with n optical channels. Possible values for m are:

  • 1: 2.5 Gb/s

  • 2: 10 Gb/s

  • 3: 40 Gb/s

• OMU: Optical Multiples Unit

• OSC: Optical Supervisory Channel

• OLA: Optical in-Line Amplifier

• OPA: Optical Pre-Amplifier

• OBA: Optical Booster Amplifier