<s>
Permitted	B-Protocol
attached	I-Protocol
private	I-Protocol
lines	I-Protocol
,	O
abbreviated	O
PAPL	B-Protocol
,	O
are	O
voice-grade	O
telephone	O
wires	O
that	O
run	O
point-to-point	O
(	O
rather	O
than	O
point-to-exchange	O
)	O
between	O
locations	O
in	O
the	O
telephone	O
company	O
's	O
copper	O
network	O
.	O
</s>
<s>
Data	O
can	O
travel	O
across	O
the	O
PAPL	B-Protocol
link	O
(	O
at	O
a	O
distance	O
of	O
up	O
to	O
3.5km	O
)	O
at	O
speeds	O
of	O
around	O
2Mb	O
per	O
second	O
.	O
</s>
<s>
Originally	O
,	O
PAPLs	B-Protocol
were	O
intended	O
to	O
act	O
as	O
basic	O
alarm	B-Architecture
circuits	I-Architecture
for	O
fire	O
or	O
security	O
systems	O
,	O
though	O
in	O
recent	O
years	O
have	O
been	O
utilised	O
to	O
carry	O
DSL	O
data	O
signals	O
.	O
</s>
