1. Partially disaggregated with no express channel
TRANSPONDER
ROADM
Allocated
(Filtered)
Actual
Observed
OTSiA/NMC Labels not fully updated
ODU (ODUCn) 1
OTU (OTUCn)
Allocated
Filtered
Observed
1..c
OTSiA_MCA
OTSi_MC
1..r r
Only MCA Connections
MC is just a list element
Only MCA CEPs
MC CEP is just a list element
Add MCs by adding to list
OAM can have explicit points
OTSiA_MCA
OTSi_MC
OTSiA_ MCA
r*N N r r`
OTSiA-MCA N N`
OTSiA-MCA
r*N n`
OMS(A) – OMSs over same single adjacency
OTsiA-MCA
1:1
OTSiA
OTSiA_MCA
OMS(A) – OMSs over same OTSs 1
OMS(A)
OMS 1 1
OMS(A)
OMS(A) 1
OMS 1
OMS Link
OMS Link
Line Port
Add/Drop Port
OMS Link
OMS Link
OTS
OTS Link
Degree Port

2. Partially disaggregated one channel with no express channel
TRANSPONDER
ROADM
Allocated
(Filtered)
Actual
Observed
ODU (ODUCn) 1
OTU (OTUCn)
Allocated
Filtered
Observed
1..c
OTSiA_MCA
OTSi_MC 1 1
Only MCA Connections
MC is just a list element
Only MCA CEPs
MC CEP is just a list element
Add MCs by adding to list
OAM can have explicit points
OTSiA_MCA
OTSi_MC
OTSiA_ MCA N 1 1
OTSiA-MCA N N`
OTSiA-MCA
OMS(A) – OMSs over same single adjacency
OTsiA-MCA
1:1
OTSiA
OTSiA_MCA
OMS(A) – OMSs over same OTSs 1
OMS(A)
OMS 1 1
OMS(A)
OMS(A) 1
OMS 1
OMS Link
OMS Link
Line Port
Add/Drop Port
OMS Link
OMS Link
OTS
OTS Link
Degree Port

3. Aggregated with no express channel
TRANSPONDER
ROADM
Allocated
Filtered
Actual
Observed
ODU (ODUCn) 1
OTU (OTUCn)
1..c
OTSiA_MCA
OTSi_MC
1..r r
s*n
OTSiA_MCA N r` n` N`
MCA
OTsiA-MCA
OMS(A) – OMSs over same OTSs 1
OMS(A)
OMS Link
OTS
OTS Link
Degree Port

4. Partially disaggregated and express channel
TRANSPONDER
ROADM
Allocated
(Filtered)
Actual
Observed
ODU (ODUCn) 1
OTU (OTUCn)
Allocated
Observed
1..c
OTSiA_MCA
OTSi_MC
1..r r
s*n
OTSiA_MCA
OTSi_MC
OTSiA_ MCA N
Filtered
Observed r r`
OTSiA-MCA N N n n n` n` N` N`
OTsiA-MCA q q`
1:1
OMS(A) – OMSs over same single adjacency
SMCA
SMC
1:1
1:1
1:1
1:1
SMCA
SMC
SMCA S
SMC s
SMC s` S`
SMCA
1:1
OTSiA
OTSiA_MCA
OMS(A) – OMSs over same OTSs 1
OMS(A)
OMS 1 1
OMS(A)
OMS(A) 1
OMS 1
OMS Link
OMS Link
Line Port
Add/Drop Port
OMS Link
OMS Link
OTS
OTS Link
Degree Port

5. Partially disaggregated with express but no allocation
TRANSPONDER
ROADM
Allocated
Filtered)
Actual
Observed
ODU (ODUCn) 1
OTU (OTUCn)
1..c
OTSiA_MCA
OTSi_MC
1..r r
s*N
OTSiA_MCA N
Filtered
Observed
(Expected)
OMS(A) – OMSs over same single adjacency
SMCA
SMC
1:1
1:1
1:1
1:1
SMCA
SMC
SMCA S
SMC s
SMC
SMCA s` S`
1:1
OTSiA
OTSiA_MCA
OMS(A) – OMSs over same OTSs 1
OMS(A)
OMS 1 1
OMS(A)
OMS(A) 1
OMS 1
OMS Link
OMS Link
Line Port
Add/Drop Port
OMS Link
OMS Link
OTS
OTS Link
Degree Port

6. TAPI 2.1 Photonic LTP Model (still under review for 2.2)
TRANSPONDER
ROADM
Service Interface Point
Node Edge Point
ODU (ODUCn) 1
Node Edge Point Group
Connection End Point (TTP only)
OTU (OTUCn)
c ~FlexO
1..c
OTSi
OTSiA
Connection End Point (CTP only)
1..r
Connection End Point (TTP + CTP) r
OTSi
s*n MC
MCA
OTSiA
Connection End Point (Inverse mux CTP only)
1:1
1:1
1:1
Media Channel CEP
{lowerFreq, upperFreq}
OTSi
MCA MC r r`
MCA
Media Channel Assembly
[{lowerFreq, upperFreq},
{lowerFreq, upperFreq}, ..] N MC n n` MC N`
MCA q q`
SMCA
SMC
MIP
Down MEP
Up MEP
OPM
1:1
1:1
1:1
1:1
SMCA
SMC
SMC
Not explicitly represented
Not explicitly modeled
SMCA S
SMC s
SMC
SMCA s` S` p p`
1:1
SMC
Non Intrusive Monitoring
No Specific OAM signaling
Optical Power Monitoring 1
OMS
OMS 1
OMS 1
OMS Link
OMS Link
C/L bands
Line Port
Add/Drop Port
1..2
OTS
OTS Link
Degree Port

7. Five concepts related to carrying signal end-to-end
MC: The channel resultant from the configuration of one or more filter. This is the frequency slot of the filter in ITU-T.
MC: The emergent transponder to transponder effect of the serial concatenation of filters, including any filters in the modulator and demodulator
OTSi-AS: The spectrum allocated to carry an OTSi.
OTSi-OS: The actual spectrum occupied by an OTSi signal
ObS: The observation spectrum. This may be wider/narrower than the actual allocated spectrum.

8. Challenges
OTSiA_MCA is a channel only when there is no express channel. Otherwise it is the allocation (read Kam’s notes to get the terms right).
Usage
Allocation
Channel (with guards)
Perhaps it is “imposed” v “freeform”…
Or perhaps it is always separated between OTSiA_allocation_usage and channel (which is what ever it needs to be)

9. ROADM Core
RDM1
RDM3
RDM4
RDM2
RDM5
Transponder
Transponder