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Modem
Registers
The
S6
register sets
the
amount
of time the
modem
waits
between
going
off
hook and
dialing
the
number.
The
modem
will
accept a
minimum
of
a
2
second
delay. (In
fact,
even
if
this
register
is
set
to
1,
the
modem
still
waits for
2 seconds.)
If
outward
dialing
repeatedly
fails
(result
code
3
or
NO
CAR-
RIER),
it
may
be because
a
dial
tone
is
not
rendered
to
the
mo-
dem
by
the
phone company
before
dialing
begins. In
this
case,
increase the value of the
S6
register until
a
satisfactory
delay
is
established.
Note
that
rt
n"
is
a
value
expressed
in
seconds.
6.10
Register
S7
-
Wait
for Carrier
Time
Period
To
Display
Modem
To Change
Status,
Enter:
Displays:
Status,
Enter:
AT
S7?
<CR>
30
AT
S7=n
<CR>
(seconds)
(n=0-255)
S7
sets
the
number
of
seconds
the
modem
waits
for
the
carrier
signal after
a
number
has
been
dialed.
This value
can be
de-
creased
if
the
modem
at
the other
end
is
particularly
fast at
re-
sponding.
A
minimum
figure of
10
for
numbers
within
your
area
code and
20
for
numbers
which
require a different
area
code
is
recommended.
6-7
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