Whether the OTU4, ODU4, and OPU4 encapsulation modes are different from other OTN encapsulation modes


The OTU4, ODU4, and OPU4 encapsulation modes are different from other OTN encapsulation modes.
OTU4 rate = (255/227) x (10 x 9.95328)
ODU4 rate = OTU4 x 239/255
Rate in the OPU4 payload area = OTU4 x 238/255
100GE signals are mapped into the OPU4 payload area in GMP mode that does not use OPU3, OPU2, or OPU1 padding bytes.

Other related questions:
Support for OTN encapsulation by the LWXD board
The LWX2, LWXS, and LWXD boards do not support OTN encapsulation. These boards implement only wavelength conversion. The service types on the WDM side and client side of the boards are the same. The service processing module on the boards performs only regeneration of client-side signals, and performance monitoring of SDH and GE services.

Advantages of the TTT-GMP and GFP-T encapsulation modes for GE services
The TTT-GMP encapsulation mode can better support synchronous Ethernet, and GFP-T can transparently transmit data packets with low latency.

Service encapsulation modes supported by the TN52TOG board
The TN52TOG board can encapsulate GE services into GE(TTT-GMP) or GE (GFP-T) services.

Encapsulation modes for encapsulating packet services into ODUk signals on the HUNQ2 board
Both the GFP-F and GFP-T modes can be used to encapsulate packet services on the HUNQ2 board into ODUk signals. The GFP-T mode is used to encapsulate services into ODU0 signals only.

Difference between GFP-T and GMP-PPP encapsulation modes on the TOA board
In the GFP-T encapsulation mode, the client-side port does not perform negotiation with the TOA boards. Instead, client devices at two ends negotiate with each other directly. In the GMP-PPP encapsulation mode, the client-side device performs negotiation with the TOA boards.

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