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COURIER HIGH SPEED MODEMS
Word
Parity
Stop
Length
(1
Bit)
Bits
7 Even,
Odd
1
Mark,
Space
7
None
2
8
None
1
STORING DEFAULTS IN NONVOLATILE MEMORY
DIALING
Write
your
default
configuration
to
nonvolatile
memory
(NVRAM)
with
the
&W
command.
The
following
example
sets
the
modem
for
the
current
session
and
also
stores
the
settings
as
defaults.
The
defaults
are
loaded
from
NVRAM
when
the
modem
is
powered
on
if DIP
switch
10 is OFF.
Be
sure
to
insert
&W
last
in
the
string,
before
pressing
the
Enter
key.
AT
&81
&H1
&W <Enter>
Use
the
following
command
format. The
modem
defaults
to
pulse
dialing:
the
T
in
the
command
enforces
tone
dialing.
The
maximum
number
of
characters
in
a
command
string
is 40.
ATDT
phonenumber
<Enter>
To
redial
the
number,
which
the
modem
stores
in
a
last-dialed
number
buffer,
use
the
following
command:
ATDL
<Enter>
LINK
RATE NEGOTIATION
During
link
negotiation
(handshaking),
the modems negotiate the
highest
possible
rate,
depending
on
each
modem's
capabilities.
The
Courier
automatically
switches
rates
to
match
the
rate
of
the
remote
modem,
within
the
following
rate
ranges: 16.SK (HST-to-
HST only), 14.4K, 12K, 9600, 7200, 4800, 2400, 1200
bps
and,
without
error
control, 300
bps.
For
more
detailed
information
on
handshaking,
see
Appendix
A.
Quick Start 3-5
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