1 Scope
2 References
3 Terms and definitions
4
Abbreviations
5 Methodology
6 Supervision
6.1 Alarm Reporting Control
6.2 Defects
6.2.1 Continuity supervision (loss of continuity defect)
6.2.2 Connectivity supervision/Trace Identifier Mismatch defect (dTIM))
6.2.3 Signal quality supervision
6.2.4 Payload Mismatch supervision (dPLM)
6.2.5 Alignment supervision
6.2.6 Maintenance signal supervision
6.2.7 Protocol supervision
6.2.8 OTM overhead signal (OOS) related defects
6.3 Consequent actions
6.4 Defect correlations
6.5 Performance filters
6.5.1 One-second performance monitoring filters associated with counts
6.5.2 Performance monitoring filters associated with gauges
7 Information flow across reference points
8 Generic processes
8.1 Scrambling processes
8.2 Alignment processes
8.2.1 OTUk frame alignment
8.2.2 OTUk multiframe alignment
8.3 Signal quality supervision
8.3.1 OTS signal quality supervision
8.3.2 OMS signal quality supervision
8.3.3 OCh signal quality supervision
8.3.4 OTUk, ODUkT and ODUkP signal quality supervision
8.4 BIP correction
8.5 OTUk Forward Error Correction (FEC) processing
8.6 Trail Trace Identifier (TTI) processing
8.7 Payload Structure Indication (PSI) acceptance processes
8.7.1 Payload Type (PT) acceptance process
8.8 Status information (STAT) acceptance process
8.9 Generic AIS generation and detection
8.10 Generic layer fault processing
8.11 Optical signal processing
8.11.1 Optical modulation and wavelength multiplexing processes
8.11.2 Optical signal pre- and post-conditioning processes
9 Optical Transmission Section (OTS) layer functions
9.1 Connection functions (N/A)
9.2 Termination functions
9.2.1 OTS Trail Termination function (OTSn_TT)
9.3 Adaptation functions
9.3.1 OTS to OMS adaptation function (OTSn/OMSn_A)
9.3.2 OTS to COMMS adaptation function (OTS/COMMS_A)
10 Optical Multiplex Section (OMS) layer functions
10.1 Connection functions (N/A)
10.2 Termination functions
10.2.1 OMS trail termination function (OMSn_TT)
10.2.2 OMS non-intrusive monitoring function (N/A)
10.3 Adaptation functions
10.3.1 OMS to OCh adaptation function (OMSn/OCh_A)
10.3.2 OMS to COMMS adaptation function (OMS/COMMS_A)
10.4 Sub-layer functions
10.4.1 OMS trail protection sub-layer functions
11 Optical Physical Section (OPS) layer functions
11.1 Connection functions (N/A)
11.2 Termination functions
11.2.1 OPSn trail termination function (OPSn_TT), n = 0, 16
11.3 Adaptation functions
11.3.1 OPS0 to OChr adaptation function (OPS0/OChr_A)
11.3.2 OPS16 to OChr adaptation function (OPS16/OChr_A)
12 OCh (Layer) functions
12.1 Connection functions
12.1.1 OCh Connection function (OCh_C)
12.2 Termination functions
12.2.1 OCh trail termination function (OCh_TT)
12.2.2 OChr trail termination function (OChr_TT)
12.2.3 OCh non-intrusive monitor function
12.2.4 Combined OCh and OTUk[V] non-intrusive monitor function (OCTk[V]m)
12.3 Adaptation functions
12.3.1 OCh to OTUk adaptation function (OCh/OTUk_A)
12.3.2 OCh to OTUkV adaptation function (OCh/OTUkV_A)
12.3.3 OCh to CBRx adaptation (OCh/CBRx_A)
12.3.4 OCh to GbE adaptation function (OCh/GbE_A)
12.3.5 OCh to RSn adaptation (OCh/RSn_A)
12.3.6 OCh to COMMS adaptation function (OCh/COMMS_A)
12.4 Sub-layer functions (N/A)
13 OTU (Layer) Functions
13.1 Connection functions (N/A)
13.2 Termination functions
13.2.1 OTUk trail termination function (OTUk_TT)
13.2.2 OTUkV trail termination function (OTUkV_TT)
13.3 Adaptation functions
13.3.1 OTUk to ODUk adaptation
function (OTUk/ODUk_A)
13.3.2 OTUkV to ODUk
adaptation function (OTUkV/ODUk_A)
13.3.3 OTUk to COMMS adaptation function (OTUk/COMMS_A)
13.3.4 OTUkV to COMMS adaptation function (OTUkV/COMMS_A)
13.4 Sub-layer functions (N/A)
14 ODU (Layer) functions
14.1 Connection functions
14.1.1 ODUk connection function (ODUk_C)
14.2 Termination functions
14.2.1 ODUkP trail termination
function (ODUkP_TT)
14.2.2 ODUkP non-intrusive monitor function
14.3 Adaptation functions
14.3.1 ODUkP to CBRx
adaptation function (ODUkP/CBRx_A)
(x = 2G5, 10G, 40G)
14.3.2 ODUkP to ATM VP
adaptation function (ODUkP/VP_A)
14.3.3 ODUkP to GFP adaptation
function (ODUkP/GFP_A)
14.3.4 ODUkP to NULL
adaptation function (ODUkP/NULL_A)
14.3.5 ODUkP to PRBS
adaptation function (ODUkP/PRBS_A)
14.3.6 ODUkP to RSn adaptation
function (ODUkP/RSn_A)
14.4 COMMS functions
14.4.1 ODUkP to COMMS adaptation function (ODUkP/COMMS_A)
14.4.2 ODUk to COMMS access function (ODUk/COMMS_AC)
14.5 Sub-layer functions
14.5.1 ODU Tandem Connection Sub-Layer (ODUkT) functions
Annex A – Optical Section (OSx)
and Constant Bit-rate (CBRx) layer functions
A.1 Connection functions (N/A)
A.2 Termination functions
A.2.1 OSx Trail Termination function (OSx_TT) (x = 2G5, 10G, 40G)
A.3 Adaptation
functions
A.3.1 OSx to CBRx adaptation (OSx/CBRx_A) (x = 2G5, 10G, 40G)
Appendix I – Applications and
functional diagrams
I.1 Transparent CBRx tributary interface port with optional SDH RS non‑intrusive
monitor on OTN equipment
I.2 OTM-0.m tributary interface port on OTN equipment
I.3 Selectable CBRx/OTM-0.m tributary interface port on OTN equipment
I.4 OTM-0.m interface ports on non-OTN equipment
I.5 OTM-n.m interface port with 3-R regeneration functionality an ODUk
connection function
Appendix II – TCM applications
Appendix III – Performance of
processes
III.1 Bibliography
III.2 OTUk frame alignment process
III.2.1 False out-of-frame events
III.2.2 Minimum average time between false out-of-frame events
III.2.3 False in-frame events
III.2.4 Frame alignment time
III.3 STAT acceptance process and related defect detection (ODUkP/TdAIS,
ODUkP/TdOCI, ODUkP/TdLCK, ODUkTdLTC, ODUkTdIAE)
III.3.1 Average acceptance, raising and clearing time
III.3.2 Mean time between false ODUkP/TdAIS and ODUkTdIAE defects due to bit
errors assuming a transmitted STAT value of "001" (normal path
signal)
III.3.3 Mean time between false ODUkP/TdOCI defects due to bit errors assuming
a transmitted STAT value of "001" (normal path signal)
III.3.4 Mean time between false ODUkTdLTC and ODUkP/TdLCK defects due to bit
errors assuming a transmitted STAT value of "001" (normal path
signal)
III.4 OTUkdIAE, OTUkdBDI, ODUkP/TdBDI detection
III.4.1 Average raising and clearing time
III.4.2 Mean time between false defects due to bit errors
III.5 PT acceptance process and ODUkPdPLM detection
III.5.1 Average acceptance, raising and clearing time
Page
III.5.2 Mean time between false PLM defects due to bit errors
III.6 Generic AIS and OTUk AIS detection
III.6.1 Average dAIS detection time
III.7 OTUkdBIAE and ODUkTdBIAE detection process
III.7.1 Average dBIAE detection time
III.7.2 Mean time between false BIAE defects due to bit errors
Appendix IV – TTI processing
examples
IV.1 Example 1
IV.1.1 Trail Trace Identifier (TTI) acceptance and reporting process
IV.1.2 SAPI/DAPI compare process
IV.1.3 Performance of Example 1
IV.2 Example 2
IV.2.1 TTI Reporting
IV.2.2 SAPI/DAPI compare process
IV.2.3 Performance of Example 2