EXFO FTB-8510B Guia Del Usuario página 882

SONET Tabs
Line RX (SONET)
For OC-192: The REI-L error is declared when either the M1 byte
located in the STS-1 #7 indicates that one or more BIP violations have
been detected, or the combination of the M0 and M1 bytes indicates
that one or more BIP violations have been detected. Refer to
OC-192/STM-64 REI-L/MS-REI on page 542 for REI-L computation
method.
Located in STS-1 #4
232
M1
0000 0000
0000 0001
0000 0010
:
1111 1111
M0
Located in STS-1 #7
0000 0000
0000 0000
0000 0000
:
0000 0110
0000 0110
:
1111 1111
Indicates
0 BIP violation
1 BIP violation
2 BIP violations
255 BIP violations
M1
0000 0000
0000 0001
0000 0010
:
0000 0000
0000 0001
1111 1111
FTB-8100 Series Transport Blazer
:
Indicates
0 BIP violation
1 BIP violation
2 BIP violations
1536 BIP violations
0 BIP violation
:
0 BIP violation