Test Functions
352 MAX-800 Series
OH - SONET/SDH
G1: Path Status. The G1 byte provides a method to communicate the
far-end path status back to the path originating equipment.
REI:
RDI/ERDI:
F2: User Channel. The User Channel provides a 64 Kbit/s channel for
communication between two PTEs. This byte is only defined for the
first STS-1/STM-1 frame of a composite signal.
H4: Multiframe Indicator. The H4 byte provides a multiframe phase
indication of a VT/TU payload.
Bits 1 to 4 of G1 Description
0000 No error
0001 1 error
0010 2 errors
::
1000 8 errors
1001 to 1111 No error
Bits 5, 6, 7 of G1 Description
000, 001, 011 No defect
100, 111 RDI
010 ERDI-PD
101 ERDI-SD
110 ERDI-CD
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