EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 466)

Test Functions
454 FTB/IQS-88000 Series
OH - OTN
Row 2

RES, columns 1-2, ODU OH: The two Reserved (RES) bytes are
configurable from 00 (default for each byte) to FF.

PM & TCM, column 3, ODU OH: The Path Monitoring and Tandem
Connection Monitoring byte is configurable from 00 (default) to FF.

TCM ACT, column 4, ODU OH: The Tandem Connection Monitoring
Activation is configurable from 00 (default) to FF.

TCM6/TCM5/TCM4, column 5-13, ODU OH: The Tandem Connection
Monitoring overhead contains the following bytes.
The first TCMi byte contains the TTI multiframe byte and is only
configurable from Traces (OTN) on page 243.
The second TCMi byte contains the BIP-8 byte and is automatically
generated for each frame. This byte is not configurable.
The third TCMi byte contains the following sub-fields. This byte is
configurable from 00 to FF. The default value is 00 when TCMi is
disabled, and 01 when enabled.

FTFL, column 14, ODU OH: The Fault Type Fault Location multiframe
byte is only configurable from FTFL/PT on page 135.

JC5 or RES
1
JC5, column 15, OPU OH: Bits 1-3 set to all-0s, and bits 4-8 are
controlled by GMP function. This byte is not configurable.
RES, column 15, OPU OH: The Reserved (RES) byte is configurable
from 00 (default) to FF.
Bit 1-4 Bit 5 Bit 6-8
BEI/BIAE BDI STAT
1. Depending on the test MUX/Mapping.