Symptom:
9.81-WSE-OC192: OTU2XP interop is not working

Setup:
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OTU2XP(client loopback) P2=====Trunk(P4)----------Trunk======WSE(OC192)

Note: Encryption disabled, standard FEC on both ends

Conditions:
Problem:
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PTIM and LOF are reported on OTU2XP trunk port on interop with WSE card.
There are no OTN level alarms or errors

Trouble shooting done:
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1] Interop between Carpegna and OTU2XP  works fine.( No alarms seen)
2] Interop between Carpegna and Rahasya  : PTIM reproted on carpegna trunk port but no LOF
3] Disabled OTN on OTU2XP trunk and connected OC192 client of Rahasya to OTU2XP trunk port No alarms are reported throughout
4] Tried with different port pairs on WSE (1-2, 9-10). Put WSE in a different slot and configured fresh payload, still the same issue is seen