<s>
The	O
ACTS	B-General_Concept
Gigabit	I-General_Concept
Satellite	I-General_Concept
Network	I-General_Concept
was	O
a	O
pioneering	O
,	O
high-speed	O
communications	O
satellite	O
network	O
in	O
the	O
years	O
1993-2004	O
,	O
created	O
as	O
a	O
prototype	O
system	O
to	O
explore	O
high-speed	O
networking	O
of	O
digital	O
endpoints	O
.	O
</s>
<s>
The	O
Advanced	O
Communications	O
Technology	O
Satellite	O
(	O
ACTS	O
)	O
network	O
was	O
designed	O
to	O
provide	O
fiber-compatible	O
SONET	B-Protocol
service	O
to	O
remote	O
nodes	O
and	O
networks	O
through	O
a	O
wideband	O
satellite	O
system	O
,	O
and	O
provided	O
long‐haul	O
,	O
point‐to‐point	O
and	O
point‐to‐multipoint	O
full‐duplex	O
SONET	B-Protocol
services	O
,	O
at	O
rates	O
up	O
to	O
622	O
Mbit/s	O
,	O
over	O
NASA	O
's	O
Advanced	O
Communication	O
Technology	O
Satellite	O
(	O
ACTS	O
)	O
.	O
</s>
<s>
The	O
ACTS	O
network	O
ground	O
terminals	O
were	O
transportable	O
Gigabit	O
Earth	O
Stations	O
(	O
GES	O
)	O
with	O
fiber-optic	O
SONET	B-Protocol
interfaces	O
(	O
OC-3	O
and	O
OC-12	O
)	O
,	O
which	O
also	O
supported	O
the	O
Asynchronous	O
Transfer	O
Mode	O
(	O
ATM	O
)	O
protocol	O
suite	O
.	O
</s>
<s>
In	O
Nov	O
.	O
1997	O
a	O
record	O
data	O
rate	O
of	O
520	O
Mbit/s	O
TCP/IP	B-Protocol
throughput	O
was	O
achieved	O
using	O
ATM	O
between	O
several	O
ground	O
stations	O
via	O
ACTS	O
.	O
</s>
