<s>
The	O
Media	B-Application
Server	I-Application
Control	O
Markup	O
Language	O
(	O
MSCML	B-Language
)	O
is	O
a	O
protocol	O
used	O
in	O
conjunction	O
with	O
the	O
Session	B-Application
Initiation	I-Application
Protocol	I-Application
(	O
SIP	O
)	O
to	O
enable	O
the	O
delivery	O
of	O
advanced	O
multimedia	O
conferencing	O
services	O
over	O
IP	B-Protocol
networks	I-Protocol
.	O
</s>
<s>
The	O
MSCML	B-Language
specification	O
has	O
been	O
published	O
by	O
the	O
IETF	O
under	O
RFC	O
4722	O
,	O
now	O
obsoleted	O
by	O
the	O
newer	O
RFC	O
5022	O
.	O
</s>
<s>
MSCML	B-Language
was	O
pioneered	O
by	O
the	O
media	B-Application
server	I-Application
company	O
Snowshore	O
,	O
now	O
part	O
of	O
the	O
Dialogic	O
Corporation	O
.	O
</s>
<s>
MSCML	B-Language
built	O
on	O
ideas	O
from	O
the	O
Netann	O
protocol	O
,	O
and	O
in	O
turn	O
inspired	O
the	O
MSML	B-Language
.	O
</s>
<s>
An	O
IETF	O
working	O
group	O
called	O
MediaCTRL	O
(	O
media	O
control	O
)	O
have	O
now	O
embarked	O
on	O
a	O
standardization	O
of	O
media	B-Application
server	I-Application
scripting	O
languages	O
,	O
drawing	O
on	O
these	O
earlier	O
efforts	O
.	O
</s>
<s>
Voice	O
scripting	O
protocols	O
like	O
VoiceXML	B-Application
and	O
CCXML	O
are	O
also	O
inspiring	O
sources	O
,	O
and	O
in	O
some	O
cases	O
need	O
to	O
be	O
integrated	O
with	O
what	O
media	B-Application
servers	I-Application
will	O
need	O
to	O
operate	O
in	O
the	O
real	O
world	O
.	O
</s>
<s>
MSCML	B-Language
enables	O
enhanced	O
conference	O
control	O
functions	O
such	O
as	O
muting	O
individual	O
callers	O
or	O
legs	O
in	O
a	O
multi-party	O
conference	O
call	O
.	O
</s>
<s>
Other	O
control	O
functionality	O
enabled	O
by	O
MSCML	B-Language
includes	O
the	O
ability	O
to	O
increase	O
or	O
decrease	O
the	O
volume	O
on	O
a	O
leg	O
or	O
on	O
the	O
call	O
and	O
the	O
capability	O
to	O
create	O
sub-conferences	O
.	O
</s>
<s>
MSCML	B-Language
also	O
addresses	O
other	O
feature	O
requirements	O
for	O
large-scale	O
conferencing	O
applications	O
,	O
such	O
as	O
sizing	O
and	O
resizing	O
of	O
a	O
conference	O
.	O
</s>
<s>
SIP	O
and	O
MSCML	B-Language
are	O
used	O
to	O
develop	O
and	O
deploy	O
services	O
within	O
the	O
IP	O
applications	O
and	O
services	O
architecture	O
.	O
</s>
<s>
This	O
network	B-Architecture
topology	I-Architecture
consists	O
of	O
application	O
servers	O
and	O
media	B-Application
servers	I-Application
which	O
work	O
together	O
in	O
a	O
client-server	O
relationship	O
,	O
with	O
application	O
servers	O
(	O
clients	O
)	O
providing	O
the	O
service	O
logic	O
for	O
each	O
specific	O
application	O
and	O
the	O
media	B-Application
server	I-Application
(	O
server	O
)	O
acting	O
as	O
a	O
shared	O
media	O
processing	O
resource	O
for	O
the	O
applications	O
.	O
</s>
<s>
The	O
media	B-Application
server	I-Application
operates	O
as	O
an	O
independent	O
entity	O
,	O
managing	O
and	O
allocating	O
its	O
processing	O
resources	O
to	O
match	O
the	O
requirements	O
of	O
each	O
application	O
.	O
</s>
