<s>
BIP-8	B-Protocol
(	O
alternatively	O
,	O
BIP8	B-Protocol
)	O
is	O
an	O
abbreviation	O
for	O
bit-interleaved	B-Protocol
parity	I-Protocol
8	I-Protocol
.	O
</s>
<s>
BIP-8	B-Protocol
consists	O
of	O
a	O
parity	O
byte	B-Application
calculated	O
bit-wise	O
across	O
a	O
large	O
number	O
of	O
bytes	B-Application
in	O
a	O
transmission	O
transport	O
frame	O
.	O
</s>
<s>
BIP-8	B-Protocol
bits	O
are	O
set	O
such	O
that	O
the	O
overall	O
data	O
stream	O
,	O
including	O
the	O
BIP-8	B-Protocol
byte	B-Application
,	O
has	O
even	O
parity	O
.	O
</s>
<s>
BIP-8	B-Protocol
is	O
used	O
in	O
the	O
SONET/SDH	B-Protocol
and	O
Optical	B-Protocol
Transport	I-Protocol
Network	I-Protocol
standards	O
,	O
as	O
well	O
as	O
in	O
some	O
older	O
PDH	B-Protocol
framing	O
schemes	O
such	O
as	O
DS3	O
and	O
E3	O
.	O
</s>
<s>
BIP-8	B-Protocol
has	O
no	O
error-correcting	B-Error_Name
functionality	O
:	O
like	O
the	O
CRC-6	O
bits	O
in	O
the	O
much	O
older	O
extended	O
superframe	O
format	O
,	O
it	O
merely	O
provides	O
an	O
approximate	O
method	O
for	O
monitoring	O
link	O
quality	O
at	O
the	O
bit	O
error	O
level	O
.	O
</s>
