<s>
TFI-5	B-Protocol
in	O
computer	B-Architecture
networking	I-Architecture
is	O
a	O
standardized	O
TDM	B-Protocol
Fabric	I-Protocol
to	I-Protocol
Framer	I-Protocol
Interface	I-Protocol
by	O
the	O
Optical	O
Internetworking	O
Forum	O
(	O
OIF	O
)	O
that	O
allow	O
both	O
framer	O
components	O
and	O
switch	O
components	O
from	O
multiple	O
vendors	O
to	O
inter-operate	O
facilitating	O
the	O
development	O
of	O
add/drop	O
multiplexers	O
,	O
TDM	B-Protocol
cross	O
connect	O
and	O
grooming	O
switches	O
.	O
</s>
<s>
The	O
TFI-5	B-Protocol
standard	O
includes	O
link	O
integrity	O
monitoring	O
,	O
connection	O
management	O
and	O
mapping	O
mechanisms	O
for	O
both	O
SONET/SDH	O
and	O
non-SONET/SDH	O
clients	O
such	O
as	O
Ethernet	O
and	O
Fibre	B-Architecture
Channel	I-Architecture
.	O
</s>
<s>
The	O
main	O
application	O
of	O
TFI-5	B-Protocol
is	O
for	O
Time-division	B-Protocol
multiplexing	I-Protocol
(	O
TDM	B-Protocol
)	O
.	O
</s>
