<s>
The	O
Defense	B-Protocol
Information	I-Protocol
System	I-Protocol
Network	I-Protocol
(	O
DISN	B-Protocol
)	O
has	O
been	O
the	O
United	O
States	O
Department	O
of	O
Defense	O
's	O
enterprise	O
telecommunications	O
network	B-Architecture
for	O
providing	O
data	O
,	O
video	O
,	O
and	O
voice	O
services	O
for	O
40	O
years	O
.	O
</s>
<s>
The	O
DISN	B-Protocol
end-to-end	O
infrastructure	O
is	O
composed	O
of	O
three	O
major	O
segments	O
:	O
</s>
<s>
The	O
Command	O
,	O
Control	O
,	O
Communications	O
,	O
Computers	O
and	O
Intelligence	O
(	O
C4I	O
)	O
infrastructure	O
will	O
interface	O
with	O
the	O
long-haul	O
network	B-Architecture
to	O
support	O
the	O
deployed	O
warfighter	O
.	O
</s>
<s>
The	O
DISN	B-Protocol
provides	O
the	O
following	O
multiple	O
networking	O
services	O
:	O
</s>
<s>
The	O
technical	O
core	O
of	O
the	O
DISN	B-Protocol
is	O
provided	O
by	O
the	O
capabilities	O
built	O
by	O
DISA	O
from	O
2002	O
–	O
2006	O
called	O
the	O
Global	O
Information	O
Grid-Bandwidth	O
Expansion	O
(	O
GIG-BE	O
)	O
.	O
</s>
<s>
As	O
defined	O
in	O
CJCSI	O
6211.02C	O
,	O
Defense	B-Protocol
Information	I-Protocol
System	I-Protocol
Network	I-Protocol
(	O
DISN	B-Protocol
)	O
Policy	O
and	O
Responsibilities	O
,	O
9	O
July	O
2008	O
,	O
end-to-end	O
is	O
defined	O
as	O
the	O
fusion	O
of	O
requisite	O
components	O
to	O
deliver	O
a	O
defined	O
capability	O
.	O
</s>
<s>
For	O
DISN	B-Protocol
services	O
,	O
end-to-end	O
encompasses	O
service	O
user	O
to	O
service	O
user	O
(	O
e.g.	O
,	O
PC-to-PC	O
,	O
phone-to-phone	O
)	O
.	O
</s>
