<s>
Link	B-Protocol
Access	I-Protocol
Procedure	I-Protocol
(	O
LAP	O
)	O
protocols	O
are	O
data	B-Protocol
link	I-Protocol
layer	I-Protocol
protocols	O
for	O
framing	O
and	O
transmitting	O
data	O
across	O
point-to-point	B-Architecture
links	O
.	O
</s>
<s>
LAP	O
was	O
originally	O
derived	O
from	O
HDLC	O
(	O
High-Level	O
Data	O
Link	O
Control	O
)	O
,	O
but	O
was	O
later	O
updated	O
and	O
renamed	O
LAPB	B-Protocol
(	O
LAP	O
Balanced	O
)	O
.	O
</s>
<s>
LAPB	B-Protocol
is	O
the	O
data	O
link	O
protocol	O
for	O
X.25	O
.	O
</s>
