<s>
A	O
dry	B-Architecture
loop	I-Architecture
is	O
an	O
unconditioned	O
leased	B-Architecture
pair	I-Architecture
of	O
telephone	O
line	O
from	O
a	O
telephone	O
company	O
.	O
</s>
<s>
The	O
pair	O
does	O
not	O
provide	O
dial	O
tone	O
or	O
battery	O
(	O
continuous	O
electric	O
potential	O
)	O
,	O
as	O
opposed	O
to	O
a	O
wet	B-Architecture
pair	I-Architecture
,	O
a	O
line	O
usually	O
without	O
dial	O
tone	O
but	O
with	O
battery	O
.	O
</s>
<s>
A	O
dry	B-Architecture
pair	I-Architecture
was	O
originally	O
used	O
with	O
a	O
security	O
system	O
but	O
more	O
recently	O
may	O
also	O
be	O
used	O
with	O
digital	O
subscriber	O
line	O
(	O
DSL	O
)	O
service	O
or	O
an	O
Ethernet	B-Protocol
extender	I-Protocol
to	O
connect	O
two	O
locations	O
,	O
as	O
opposed	O
to	O
a	O
costlier	O
means	O
such	O
as	O
a	O
Frame	B-Protocol
Relay	I-Protocol
.	O
</s>
<s>
Wet	B-Architecture
pair	I-Architecture
naming	O
comes	O
from	O
the	O
battery	O
used	O
to	O
sustain	O
the	O
loop	O
,	O
which	O
was	O
made	O
from	O
wet	O
cells	O
.	O
</s>
<s>
Many	O
carriers	O
market	O
dry	B-Architecture
loops	I-Architecture
to	O
independent	O
DSL	O
providers	O
as	O
a	O
BANA	O
for	O
basic	B-Architecture
analog	I-Architecture
loop	I-Architecture
or	O
in	O
some	O
locales	O
PANA	O
for	O
plain	O
analog	O
loop	O
,	O
OPX	O
(	O
off-premises	O
extension	O
)	O
line	O
,	O
paging	O
circuit	O
,	O
or	O
finally	O
LADS	O
(	O
local	O
area	O
data	O
service	O
)	O
.	O
</s>
<s>
In	O
Canada	O
,	O
a	O
CRTC	O
ruling	O
of	O
21	O
July	O
2003	O
requires	O
telcos	O
(	O
such	O
as	O
Bell	O
Canada	O
)	O
permit	O
dry	B-Architecture
loop	I-Architecture
and	O
some	O
companies	O
do	O
provide	O
this	O
service	O
.	O
</s>
<s>
Naked	O
DSL	O
is	O
currently	O
provided	O
by	O
third-party	O
DSL	O
(	O
digital	O
subscriber	O
line	O
)	O
vendors	O
in	O
the	O
provinces	O
of	O
Ontario	O
and	O
Quebec	O
,	O
but	O
incurs	O
an	O
additional	O
dry	B-Architecture
loop	I-Architecture
fee	O
(	O
often	O
$5	O
or	O
more	O
monthly	O
,	O
depending	O
on	O
the	O
distance	O
from	O
the	O
exchange	O
)	O
.	O
</s>
<s>
There	O
is	O
not	O
yet	O
widespread	O
adoption	O
,	O
as	O
this	O
extra	O
fee	O
often	O
renders	O
dry-loop	O
DSL	O
more	O
costly	O
than	O
comparable	O
cable	B-Device
modem	I-Device
service	O
in	O
most	O
locations	O
.	O
</s>
<s>
A	O
Bell	O
Canada	O
"	O
dry	B-Architecture
loop	I-Architecture
"	O
DSL	O
connection	O
does	O
supply	O
battery	O
,	O
but	O
the	O
underlying	O
phone	O
line	O
is	O
non-functional	O
except	O
to	O
call	O
958-ANAC	O
,	O
9-1-1	O
or	O
the	O
310-BELL	O
telco	O
business	O
office	O
.	O
</s>
