<s>
In	O
a	O
telecommunication	O
network	O
,	O
a	O
ring	B-Architecture
network	I-Architecture
affords	O
fault	B-General_Concept
tolerance	I-General_Concept
to	O
the	O
network	O
because	O
there	O
are	O
two	O
paths	O
between	O
any	O
two	O
nodes	B-Protocol
on	O
the	O
network	O
.	O
</s>
<s>
Ring	B-Architecture
protection	I-Architecture
is	O
the	O
system	O
used	O
to	O
assure	O
communication	O
continues	O
in	O
the	O
event	O
of	O
failure	O
of	O
one	O
of	O
the	O
paths	O
.	O
</s>
