Row 3
TCM3/TCM2/TCM1: See Row 2 on page 192 for more information.
PM: Displays the following Performance Monitoring overhead bytes.
The first PM byte (Column 10) contains the TTI multiframe byte.
The second SM byte (Column 11) contains the BIP-8 byte.
The third PM byte (Column 12) contains the following sub-fields.
BEI
BDI
STAT
EXP: Displays the two Experimental overhead bytes received.
Row 4
GCC1: Displays the two General Communication Channel-1 bytes.
GCC2: Displays the two General Communication Channel-2 bytes.
APS/PCC: Displays the Automatic Protection Switching / Protection
Communication Channel overhead bytes. The Automatic Protection
Switching / Protection Communication Channel overhead bytes are
defined in the ITU-T G.709 standard.
RES: Displays the six Reserved (RES) bytes received.
SONET/SDH Application
Sub-field
Bit
1-4
5
6-8
OTN Tabs
ODU OH RX
193