<s>
CEBus(r )	O
,	O
short	O
for	O
Consumer	O
Electronics	O
Bus	O
,	O
also	O
known	O
as	O
EIA-600	O
,	O
is	O
a	O
set	O
of	O
electrical	O
standards	O
and	O
communication	O
protocols	O
for	O
electronic	O
devices	O
to	O
transmit	O
commands	O
and	O
data	O
.	O
</s>
<s>
They	O
called	O
this	O
standard	O
CEBus	B-Architecture
(	O
pronounced	O
"	O
see	O
bus	O
"	O
)	O
.	O
</s>
<s>
The	O
CEBus	B-Architecture
standard	O
was	O
released	O
in	O
September	O
1992	O
.	O
</s>
<s>
CEBus	B-Architecture
is	O
an	O
open	B-Architecture
architecture	I-Architecture
set	O
of	O
specification	O
documents	O
which	O
define	O
protocols	O
for	O
products	O
to	O
communicate	O
through	O
power	O
line	O
wire	O
,	O
low	O
voltage	O
twisted	O
pair	O
wire	O
,	O
coaxial	O
cable	O
,	O
infrared	O
,	O
RF	O
,	O
and	O
fiber	B-Architecture
optics	I-Architecture
.	O
</s>
<s>
The	O
CEBus	B-Architecture
Standard	O
was	O
developed	O
on	O
the	O
foundation	O
of	O
an	O
IR	O
(	O
infrared	O
)	O
protocol	O
developed	O
by	O
GE	O
(	O
General	O
Electric	O
)	O
.	O
</s>
<s>
The	O
CEBus	B-Architecture
standard	O
includes	O
such	O
things	O
as	O
spread	B-Architecture
spectrum	I-Architecture
modulation	O
on	O
the	O
power	O
line	O
.	O
</s>
<s>
Spread	B-Architecture
spectrum	I-Architecture
involves	O
starting	O
a	O
modulation	O
at	O
one	O
frequency	O
,	O
and	O
altering	O
the	O
frequency	O
during	O
its	O
cycle	O
.	O
</s>
<s>
The	O
CEBus	B-Architecture
power	O
line	O
standard	O
begins	O
each	O
burst	O
at	O
100kHz	O
,	O
and	O
increases	O
linearly	O
to	O
400kHz	O
during	O
a	O
100	O
microsecond	O
duration	O
.	O
</s>
<s>
CEBus	B-Architecture
transmissions	O
are	O
strings	O
or	O
packets	O
of	O
data	O
that	O
also	O
vary	O
in	O
length	O
,	O
depending	O
upon	O
how	O
much	O
data	O
is	O
included	O
.	O
</s>
<s>
Other	O
media	O
besides	O
powerline	O
carrier	O
are	O
specified	O
:	O
coaxial	O
cable	O
,	O
infrared	O
,	O
radio	O
frequency	O
,	O
and	O
optical	B-Architecture
fiber	I-Architecture
.	O
</s>
<s>
The	O
CEBus	B-Architecture
standard	O
involves	O
device	O
addresses	O
that	O
are	O
set	O
in	O
hardware	O
at	O
the	O
factory	O
,	O
and	O
include	O
4	O
billion	O
possibilities	O
.	O
</s>
<s>
The	O
CEBUS	B-Architecture
standard	O
includes	O
a	O
large	O
number	O
of	O
control	O
and	O
operation	O
tables	O
,	O
called	O
the	O
CAL	O
contexts	O
.	O
</s>
<s>
These	O
tables	O
identify	O
a	O
variety	O
of	O
control	O
and	O
monitoring	O
commands	O
that	O
are	O
used	O
by	O
remote	O
devices	O
(	O
elsewhere	O
in	O
a	O
home	O
,	O
or	O
with	O
the	O
Internet	O
,	O
even	O
elsewhere	O
in	O
the	O
world	O
)	O
to	O
communicate	O
with	O
CEBus	B-Architecture
certified	O
products	O
.	O
</s>
<s>
The	O
simplified	O
CEBus	B-Architecture
standard	O
stack	O
includes	O
HPnP	O
,	O
CAL	O
contexts	O
,	O
CEBus	B-Architecture
standard	O
,	O
and	O
EIA-600	O
.	O
</s>
<s>
Intellon	O
or	O
Domosys	O
sell	O
the	O
chip	O
to	O
other	O
manufacturers	O
for	O
use	O
in	O
their	O
products	O
,	O
and	O
offer	O
to	O
manufacture	O
private	O
label	O
and	O
OEM	O
products	O
using	O
the	O
CEBus	B-Architecture
standard	O
.	O
</s>
<s>
Intellon	O
and	O
Domosys	O
also	O
sell	O
developer	O
kits	O
to	O
develop	O
a	O
CEBus	B-Architecture
compatible	O
product	O
.	O
</s>
<s>
Having	O
moved	O
out	O
of	O
a	O
laboratory	O
and	O
into	O
the	O
market	O
,	O
the	O
CEBus	B-Architecture
trademark	O
is	O
owned	O
by	O
the	O
EIA	O
.	O
</s>
<s>
Ongoing	O
developments	O
are	O
conducted	O
by	O
a	O
group	O
known	O
as	O
the	O
CIC	O
(	O
CEBus	B-Architecture
Industry	O
Council	O
)	O
.	O
</s>
<s>
Although	O
there	O
is	O
no	O
restriction	O
from	O
anyone	O
using	O
the	O
CEBus	B-Architecture
standard	O
,	O
the	O
CIC	O
is	O
developing	O
a	O
non-profit	O
testing	O
laboratory	O
which	O
will	O
be	O
funded	O
by	O
certification	O
charges	O
.	O
</s>
<s>
When	O
the	O
performance	O
is	O
certified	O
,	O
the	O
manufacturer	O
pays	O
a	O
certification	O
fee	O
and	O
is	O
licensed	O
to	O
include	O
the	O
CEBus	B-Architecture
logo	O
on	O
their	O
product	O
.	O
</s>
