<s>
XOT	B-Protocol
(	O
X.25	B-Protocol
Over	O
TCP	O
)	O
is	O
a	O
protocol	O
developed	O
by	O
Cisco	O
Systems	O
that	O
enables	O
X.25	B-Protocol
packets	O
to	O
be	O
encapsulated	O
and	O
routed	O
through	O
TCP/IP	B-Protocol
connections	O
instead	O
of	O
LAPB	B-Protocol
links	O
.	O
</s>
<s>
In	O
2012	O
,	O
X.25	B-Protocol
tunnelled	O
over	O
TCP/IP	B-Protocol
using	O
XOT	B-Protocol
was	O
noted	O
as	O
by	O
then	O
being	O
likely	O
more	O
common	O
in	O
actual	O
use	O
than	O
physical	O
X.25	B-Protocol
over	O
LAPB	B-Protocol
.	O
</s>
