<s>
The	O
Juniper	B-Protocol
T	I-Protocol
series	I-Protocol
is	O
a	O
line	O
of	O
core	B-Protocol
routers	I-Protocol
designed	O
and	O
manufactured	O
by	O
Juniper	O
Networks	O
.	O
</s>
<s>
The	O
T-series	O
core	B-Protocol
router	I-Protocol
family	O
comprises	O
the	O
T320	O
,	O
T640	O
,	O
T1600	O
,	O
T4000	O
,	O
TX	O
Matrix	O
,	O
and	O
TX	O
Matrix	O
Plus	O
,	O
designed	O
for	O
high-end	O
and	O
core	O
networks	O
with	O
throughput	O
from	O
320	O
Gbit/s	O
to	O
25.6	O
Tbit/s	O
with	O
a	O
maximum	O
forwarding	O
rate	O
of	O
30.7billion	O
pps	O
.	O
</s>
<s>
The	O
T-series	O
routers	B-Protocol
run	O
Junos	B-Application
OS	I-Application
.	O
</s>
<s>
In	O
2015	O
Juniper	O
Networks	O
announced	O
the	O
2016	O
end-of-life	O
for	O
all	O
T-series	O
routers	B-Protocol
other	O
than	O
T4000	O
.	O
</s>
<s>
The	O
other	O
models	O
in	O
the	O
series	O
are	O
superseded	O
by	O
the	O
PTX-series	O
core	B-Protocol
routers	I-Protocol
and	O
MX-series	B-Protocol
edge	B-Protocol
routers	I-Protocol
,	O
except	O
for	O
applications	O
that	O
require	O
legacy	O
protocols	O
like	O
SONET	B-Protocol
or	O
ATM	O
.	O
</s>
<s>
The	O
Juniper	B-Protocol
T-series	I-Protocol
routers	B-Protocol
which	O
consists	O
of	O
T320	O
,	O
T640	O
,	O
T1600	O
,	O
T4000	O
,	O
TX	O
Matrix	O
and	O
TX	O
Matrix	O
Plus	O
has	O
thousands	O
of	O
units	O
deployed	O
by	O
the	O
major	O
telecom	O
and	O
ISP	O
networks	O
around	O
the	O
world	O
.	O
</s>
<s>
T320	O
Core	B-Protocol
Router	I-Protocol
is	O
designed	O
for	O
use	O
where	O
rack	O
space	O
is	O
at	O
a	O
premium	O
and	O
a	O
wide	O
range	O
of	O
interface	O
speeds	O
are	O
needed	O
.	O
</s>
<s>
Each	O
T320	O
router	B-Protocol
can	O
support	O
up	O
to	O
sixteen	O
10-Gbit/s	O
ports	O
(	O
OC-192c/	O
STM-64	B-Protocol
or	O
10-Gigabit	O
Ethernet	O
)	O
while	O
allowing	O
lower	O
speed	O
connectivity	O
down	O
to	O
channelized	O
increments	O
within	O
the	O
same	O
chassis	O
.	O
</s>
<s>
Those	O
include	O
ATM	O
(	O
Asynchronous	O
Transfer	O
Mode	O
)	O
and	O
SONet	B-Protocol
(	O
Synchronous	B-Protocol
Optical	I-Protocol
Network	I-Protocol
)	O
interfaces	O
at	O
OC-3	O
(	O
155M	O
bit/s	O
)	O
and	O
OC-12	B-Protocol
(	O
622M	O
bit/s	O
)	O
,	O
as	O
well	O
as	O
Gigabit	O
Ethernet	O
.	O
</s>
<s>
For	O
those	O
connections	O
,	O
carriers	O
can	O
reuse	O
interfaces	O
from	O
the	O
M	B-Protocol
series	I-Protocol
and	O
install	O
them	O
in	O
the	O
T-series	O
blades	O
.	O
</s>
<s>
The	O
T640	O
supports	O
up	O
to	O
8	O
OC-768c/STM	O
-256	O
ports	O
,	O
32	O
10-Gbit/s	O
ports	O
(	O
10-Gigabit	O
Ethernet	O
or	O
OC-192/STM	O
-64	O
)	O
,	O
128	O
OC-48c/STM	O
-16	O
ports	O
,	O
or	O
320	O
Gigabit	O
Ethernet	O
ports	O
.	O
</s>
<s>
The	O
packet	O
forwarding	O
and	O
switching	B-Protocol
complex	O
of	O
a	O
T1600	O
supports	O
100	O
Gbit/s	O
per	O
slot	O
.	O
</s>
<s>
Current	O
interface	O
configurations	O
include	O
up	O
to	O
16	O
OC-768c/STM	O
-256	O
ports	O
or	O
64	O
10-Gbit/s	O
ports	O
(	O
10-Gigabit	O
Ethernet	O
or	O
OC-192/STM	O
-64	O
)	O
.	O
</s>
<s>
The	O
T4000	O
delivers	O
4Tbit/s	O
switching	B-Protocol
capacity	O
(	O
1920	O
Gbit/s	O
full-duplex	O
)	O
over	O
the	O
backplane	O
in	O
a	O
half-shelf	O
router	B-Protocol
with	O
a	O
per-slot	O
capacity	O
of	O
240Gbit/s	O
,	O
up	O
from	O
100Gbit/s	O
in	O
the	O
existing	O
T1600	O
models	O
and	O
50Gbit/s	O
in	O
T640	O
models	O
.	O
</s>
<s>
Interconnects	O
up	O
to	O
four	O
T640	O
chassis	O
into	O
a	O
single	O
routing	B-Protocol
entity	O
.	O
</s>
<s>
Juniper	O
's	O
TX	O
Matrix	O
Plus	O
is	O
the	O
central	O
switching	B-Protocol
and	O
routing	B-Protocol
element	O
that	O
can	O
interconnect	O
up	O
to	O
16	O
T1600	O
chassis	O
into	O
a	O
single	O
routing	B-Protocol
entity	O
with	O
128	O
slots	O
and	O
a	O
sustainable	O
throughput	O
rate	O
of	O
up	O
to	O
25	O
Tbit/s	O
(	O
30.7billion	O
pps	O
)	O
.	O
</s>
<s>
Using	O
the	O
virtualization	O
capabilities	O
of	O
JCS1200	O
,	O
this	O
available	O
resource	O
can	O
be	O
partitioned	O
into	O
aggregation	O
or	O
edge	O
routing	B-Protocol
,	O
or	O
into	O
the	O
support	O
of	O
virtual	O
service	O
networks	O
for	O
advanced	O
partitioned	O
services	O
such	O
as	O
video	O
,	O
mobile	O
,	O
and	O
all	O
corporate	O
traffic	O
.	O
</s>
<s>
With	O
scalable	O
memory	O
and	O
storage	O
media	O
,	O
JCS1200	O
provides	O
up	O
to	O
12	O
routing	B-Protocol
engines	O
in	O
a	O
compact	O
one-quarter	O
rack	O
chassis	O
.	O
</s>
<s>
The	O
T-series	O
features	O
include	O
MPLS	B-Protocol
Differentiated	O
Services	O
(	O
DiffServ-TE	O
)	O
,	O
point-to-multipoint	O
label-switched	O
paths	O
,	O
nonstop	O
routing	B-Protocol
and	O
in-service	O
software	O
upgrades	O
(	O
ISSUs	O
)	O
,	O
hierarchical	O
MPLS	B-Protocol
,	O
and	O
service	O
delivery	O
coupling	O
with	O
the	O
Juniper	O
Networks	O
JCS1200	O
and	O
the	O
Partner	O
Solution	O
Development	O
Platform	O
(	O
PSDP	O
)	O
.	O
</s>
