<s>
DVB-RCS	B-Device
is	O
an	O
acronym	O
for	O
Digital	B-Application
Video	I-Application
Broadcasting	I-Application
-	O
Return	O
Channel	O
via	O
Satellite	O
or	O
(	O
Return	O
channel	O
over	O
system	O
)	O
.	O
</s>
<s>
It	O
is	O
a	O
specification	O
for	O
an	O
interactive	O
on-demand	O
multimedia	O
satellite	O
communication	O
system	O
formulated	O
in	O
1999	O
by	O
the	O
DVB	B-Application
consortium	O
.	O
</s>
<s>
The	O
5th	O
revision	O
of	O
the	O
DVB-RCS	B-Device
standard	O
was	O
completed	O
in	O
2008	O
.	O
</s>
<s>
This	O
extended	O
version	O
,	O
formally	O
referred	O
to	O
as	O
"	O
ETSI	O
EN	O
301	O
790	O
v	O
1.5.1	O
"	O
is	O
also	O
known	O
as	O
"	O
DVB-RCS	B-Device
+M	O
"	O
.	O
</s>
<s>
The	O
"	O
+M	O
"	O
version	O
added	O
several	O
new	O
features	O
,	O
such	O
as	O
the	O
ability	O
to	O
use	O
"	O
DVB-S2	O
"	O
bursts	O
in	O
the	O
uplink	O
channel	O
back	O
to	O
the	O
satellite	O
.	O
</s>
<s>
In	O
contrast	O
to	O
other	O
satellite	O
communications	O
systems	O
,	O
DVB-RCS	B-Device
was	O
created	O
in	O
an	O
open	O
environment	O
where	O
any	O
DVB	B-Application
member	O
can	O
participate	O
.	O
</s>
<s>
DVB	B-Application
membership	O
is	O
open	O
to	O
all	O
companies	O
willing	O
to	O
subscribe	O
.	O
</s>
<s>
The	O
work	O
group	O
called	O
"	O
DVB	B-Application
TM-RCS	O
"	O
is	O
currently	O
pursuing	O
other	O
technical	O
solutions	O
for	O
the	O
approved	O
commercial	O
system	O
.	O
</s>
<s>
In	O
2009	O
technical	O
work	O
started	O
for	O
a	O
new	O
version	O
of	O
DVB-RCS	B-Device
called	O
"	O
DVB-RCS	B-Device
NG	O
"	O
(	O
Next	O
Generation	O
)	O
.	O
</s>
<s>
DVB-RCS	B-Device
is	O
a	O
mature	O
open	O
source	O
satellite	O
communication	O
standard	O
with	O
highly	O
efficient	O
bandwidth	O
management	O
.	O
</s>
<s>
Signal	O
encoding	O
uses	O
phase-shift	B-General_Concept
keying	I-General_Concept
(	O
QPSK	O
or	O
GMSK	O
)	O
.	O
</s>
<s>
The	O
standard	O
that	O
implements	O
DVB-RCS	B-Device
is	O
ETSI	O
EN	O
301.790	O
.	O
</s>
