Row 2
RES: The three Reserved (RES) bytes are configurable from 00 to FF.
The default value for each byte is 00.
PM&TCM: The Path Monitoring & Tandem Connection Monitoring is
configurable from 00 to FF. The default value is 00.
TCM ACT: The Tandem Connection Monitoring Activation is
configurable from 00 to FF. The default value is 00.
TCM6/TCM5/TCM4 (Row 2) and TCM3/TCM2/TCM1 (Row 3): The
Tandem Connection Monitoring overhead contains the following bytes.
The first TCMi byte contains the TTI multiframe byte and is only
configurable from ODU TTI/FTFL TX on page 186.
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.
BEI/BIAE
BDI
STAT
FTFL: The Fault Type Fault Location multiframe byte is only
configurable from ODU TTI/FTFL TX on page 186.
SONET/SDH Application
Sub-field
Bit
1-4
5
6-8
OTN Tabs
ODU OH TX
183