For
every
connection,
an
access
rate
(in
bits
per
second)
is
defined.
The
access
rate
actually
depends
on
the
bandwidth
of
the
channel
connecting
the
user
to
the
network.
The
user
can
never
exceed
this
rate.
For
example,
if
the
user
is
connected
to
a
Frame
Relay
network
by
a
T-l
line,
the
access
rate
is
1.544
Mbps
and
can
never
be
exceeded
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