EXFO FTB-8510B Guia Del Usuario página 817

SM: Displays the received Section Monitoring bytes.
The first SM byte (Column 8) contains the TTI multiframe byte.
The second SM byte (Column 9) contains the BIP-8 byte.
The third SM byte (Column 10) contains the following sub-fields.
BEI/BIAE
BDI
IAE
RES
GCC0: Displays the received General Communication Channel byte
values.
RES: Displays the received RES (Reserved) byte values.
SONET/SDH Application
Sub-field Bit
1-4
5
6
7-8
OTN Tabs
OTU OH RX
167