<s>
The	O
telefonic	O
tripolar	B-Protocol
plug	I-Protocol
is	O
the	O
first	O
type	O
of	O
telephone	B-Protocol
plug	I-Protocol
used	O
in	O
Italy	O
.	O
</s>
<s>
The	O
tripolar	B-Protocol
plug	I-Protocol
has	O
been	O
supplanted	O
by	O
the	O
international	O
RJ11	O
standard	O
,	O
both	O
because	O
it	O
is	O
more	O
diffused	O
in	O
new	O
technology	O
devices	O
and	O
because	O
the	O
tripolar	B-Protocol
plug	I-Protocol
is	O
n't	O
suitable	O
for	O
ISDN	B-Protocol
.	O
</s>
