<s>
In	O
optical	B-Protocol
burst	I-Protocol
switching	I-Protocol
,	O
offset	B-Protocol
time	I-Protocol
is	O
the	O
time	O
between	O
the	O
burst	O
header/control	O
packet	O
.	O
</s>
<s>
The	O
offset	B-Protocol
time	I-Protocol
used	O
in	O
one-way	O
reservation	O
schemes	O
allows	O
the	O
network	O
time	O
to	O
schedule	O
the	O
burst	O
and	O
set-up	O
resources	O
prior	O
to	O
burst	O
arrival	O
is	O
sent	O
into	O
the	O
network	O
.	O
</s>
<s>
The	O
offset	B-Protocol
time	I-Protocol
can	O
be	O
varied	O
to	O
allow	O
the	O
network	O
time	O
to	O
configure	O
based	O
on	O
the	O
information	O
carried	O
in	O
the	O
burst	O
header	O
packet	O
.	O
</s>
<s>
By	O
varying	O
the	O
offset	B-Protocol
time	I-Protocol
,	O
different	O
levels	O
of	O
quality	O
of	O
service	O
can	O
be	O
provided	O
.	O
</s>
