<s>
Digital	B-Protocol
Signal	I-Protocol
Designation	I-Protocol
is	O
the	O
classification	O
of	O
digital	O
bit	O
rates	O
in	O
the	O
digital	B-Protocol
multiplex	I-Protocol
hierarchy	I-Protocol
used	O
in	O
transport	O
of	O
signals	O
from	O
one	O
location	O
to	O
another	O
in	O
telecommunications	O
.	O
</s>
<s>
In	O
practice	O
,	O
"	O
DS	O
"	O
and	O
"	O
T	O
"	O
are	O
used	O
synonymously	O
;	O
for	O
example	O
,	O
DS1	B-Protocol
and	O
T1	O
,	O
DS3	O
and	O
T3	O
.	O
</s>
<s>
See	O
SONET	B-Protocol
for	O
more	O
information	O
.	O
</s>
