<s>
Ethernet	B-Protocol
Consist	I-Protocol
Network	I-Protocol
(	O
ECN	O
)	O
is	O
a	O
train	O
communication	O
network	O
based	O
on	O
Ethernet	O
technology	O
standardised	O
with	O
IEC-61375-3-	O
.	O
</s>
<s>
ECN	O
is	O
organised	O
in	O
a	O
ring	B-Architecture
topology	I-Architecture
to	O
provide	O
redundancy	O
in	O
the	O
event	O
of	O
cable	O
or	O
component	O
failure	O
.	O
</s>
<s>
It	O
provides	O
an	O
Internet	B-Protocol
Protocol	I-Protocol
(	O
IP	O
)	O
interface	O
to	O
TCMS	O
(	O
train	O
control	O
and	O
management	O
system	O
)	O
and	O
other	O
systems	O
within	O
a	O
vehicle	O
(	O
consist	O
)	O
.	O
</s>
<s>
The	O
Ethernet	O
technology	O
's	O
large	O
bandwidth	O
(	O
typically	O
100	O
Mbit/s	O
)	O
is	O
particularly	O
suitable	O
for	O
data-intensive	O
systems	O
like	O
video	O
surveillance	O
or	O
passenger	B-Application
information	I-Application
systems	I-Application
.	O
</s>
