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.

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