<s>
International	B-Protocol
Virtual	I-Protocol
Aviation	I-Protocol
Organisation	I-Protocol
VZW	O
(	O
IVAO	O
)	O
is	O
a	O
non-profit	O
association	O
which	O
operates	O
a	O
free-of-charge	O
online	O
flight-simulation	B-Application
network	B-Architecture
.	O
</s>
<s>
Following	O
free	O
registration	O
users	O
can	O
connect	O
to	O
the	O
IVAO	O
Network	B-Architecture
(	O
IVAN	O
)	O
either	O
as	O
a	O
virtual	O
air	B-Application
traffic	I-Application
controller	I-Application
or	O
as	O
a	O
virtual	O
pilot	O
and	O
engage	O
and	O
interact	O
with	O
each	O
other	O
in	O
a	O
massively	O
multiplayer	O
environment	O
utilising	O
real-world	O
aviation	O
procedures	O
,	O
phraseology	O
and	O
techniques	O
.	O
</s>
<s>
IVAO	O
,	O
with	O
more	O
than	O
240,000	O
registered	O
members	O
,	O
is	O
one	O
of	O
the	O
largest	O
online	O
flight	B-Application
simulation	I-Application
networks	O
that	O
allow	O
users	O
to	O
act	O
as	O
either	O
a	O
virtual	O
pilot	O
or	O
air	B-Application
traffic	I-Application
controller	I-Application
.	O
</s>
<s>
Air	B-Application
Traffic	I-Application
Controllers	I-Application
can	O
connect	O
to	O
the	O
IVAO	O
network	B-Architecture
using	O
IVAO	O
's	O
radar	O
client	O
IvAc	O
,	O
or	O
Aurora	O
-	O
The	O
IVAO	O
ATC	O
Client	O
,	O
that	O
emulates	O
the	O
interface	O
of	O
a	O
modern	O
,	O
real-world	O
air	O
traffic	O
control	O
radar	O
scope	O
.	O
</s>
<s>
While	O
the	O
largest	O
part	O
of	O
IVAO	O
's	O
active	O
membership	O
is	O
based	O
in	O
Europe	O
,	O
new	O
divisions	O
are	O
continually	O
being	O
created	O
to	O
spread	O
the	O
network	B-Architecture
coverage	O
world-wide	O
.	O
</s>
<s>
A	O
fully	O
integrated	O
VA	O
system	O
offers	O
virtual	O
airlines	O
the	O
ability	O
to	O
operate	O
on	O
the	O
IVAO	O
Network	B-Architecture
even	O
with	O
fictional	O
airline	O
callsigns	O
and	O
liveries	O
.	O
</s>
<s>
The	O
first	O
steps	O
for	O
setting	O
up	O
flight	B-Application
simulation	I-Application
in	O
a	O
massively-multiplayer	O
online	O
environment	O
were	O
taken	O
with	O
the	O
creation	O
of	O
SquawkBox	O
and	O
ProController	O
in	O
the	O
mid-1990s	O
.	O
</s>
<s>
Using	O
these	O
programs	O
,	O
SATCO	O
(	O
now	O
VATSIM	O
)	O
was	O
the	O
first	O
large	O
network	B-Architecture
to	O
create	O
an	O
online	O
air	O
traffic	O
simulation	O
environment	O
.	O
</s>
<s>
On	O
December	O
16	O
,	O
1998	O
,	O
IVAO	O
was	O
founded	O
when	O
a	O
group	O
of	O
people	O
left	O
SATCO	O
to	O
form	O
a	O
new	O
network	B-Architecture
after	O
management	O
conflicts	O
developed	O
within	O
the	O
organisation	O
.	O
</s>
<s>
In	O
2021	O
,	O
the	O
North	O
American	O
Division	O
of	O
IVAO	O
represented	O
the	O
network	B-Architecture
at	O
FlightSimExpo	O
.	O
</s>
<s>
Servers	O
were	O
n't	O
able	O
to	O
handle	O
the	O
already	O
expected	O
large	O
number	O
of	O
connections	O
,	O
crashing	O
multiple	O
times	O
,	O
creating	O
a	O
very	O
bad	O
image	O
on	O
the	O
network	B-Architecture
stability	O
.	O
</s>
<s>
All	O
users	O
flying	O
on	O
the	O
IVAO	O
network	B-Architecture
now	O
benefit	O
from	O
UNICOM	O
,	O
but	O
on	O
voice	O
that	O
uses	O
the	O
new	O
Voice	O
2.0	O
capabilities	O
.	O
</s>
