<s>
When	O
a	O
descrambler	O
is	O
added	O
to	O
the	O
Cable	O
Converter	B-Device
Box	I-Device
in	O
the	O
same	O
chassis	O
,	O
it	O
is	O
referred	O
to	O
as	O
a	O
Converter/Descrambler	B-Device
or	O
sometimes	O
a	O
Combination	O
Unit	O
,	O
and	O
is	O
a	O
type	O
of	O
Set-top	O
box	O
,	O
it	O
allows	O
:	O
local	O
broadcast	O
channels	O
,	O
basic	O
cable	O
channels	O
,	O
authorized	O
premium	O
channels	O
,	O
"	O
Pay-Per-View	O
"	O
(	O
PPV	O
)	O
,	O
and	O
“	O
Video	O
On	O
Demand	O
”	O
(	O
VOD	O
)	O
services	O
to	O
be	O
viewed	O
.	O
</s>
<s>
A	O
Combination	O
Converter/Descrambler	B-Device
is	O
generally	O
called	O
a	O
Set-top	O
box	O
or	O
STB	O
it	O
is	O
a	O
single	O
(	O
one-piece	O
)	O
system	O
installed	O
in	O
a	O
single	O
cabinet	O
and	O
represents	O
a	O
single	O
component	O
that	O
is	O
capable	O
of	O
descrambling	O
premium	O
services	O
,	O
like	O
HBO	O
or	O
Showtime	O
,	O
pay-per-view	O
cable	O
channels.	O
,	O
Video	O
on	O
Demand	O
,	O
Games	O
or	O
other	O
specialty	O
pay	O
services	O
,	O
and	O
transposes	O
the	O
cable	O
signal	O
for	O
RF	O
output	O
on	O
channel	O
3	O
or	O
4	O
.	O
</s>
