<s>
In	O
a	O
data	O
communication	O
network	O
,	O
the	O
primary	B-Protocol
station	I-Protocol
is	O
the	O
station	O
responsible	O
for	O
unbalanced	O
control	O
of	O
a	O
data	O
link	O
.	O
</s>
<s>
The	O
primary	B-Protocol
station	I-Protocol
generates	O
commands	O
and	O
interprets	O
responses	O
,	O
and	O
is	O
responsible	O
for	O
initialization	O
of	O
data	O
and	O
control	O
information	O
interchange	O
,	O
organization	O
and	O
control	O
of	O
data	O
flow	O
,	O
retransmission	O
control	O
,	O
and	O
all	O
recovery	O
functions	O
at	O
the	O
link	B-Protocol
level	I-Protocol
.	O
</s>
