Tandy 1400 LT User Manual page 64

Chapter
6
6.11
Register S8
-
Pause Time
of
Comma
To
Display
Modem
To Change
Status, Enter:
Displays:
Status, Enter:
AT
S8?
<CR>
2
AT
S8=n <CR>
seconds
(n=0-255)
How
long the
modem
delays
for
an
intermediate
dial
tone
is
set
by
the S8
register. (Recall that
a
comma
is
used
in the dialing
com-
mand
to allow
for a
second
dial
tone, used
with
many
PBX's.)
Note
that the
modem
does
not
actually "listen"
for
the intermedi-
ate
dial
tone
(unless
you
use the
W
command)
;
it
just
delays
for
a
period
and assumes
that
the tone
is
present.
Consequently,
if
a 3
or
NO
CARRIER
result
code
is
rendered
frequently,
try increasing
the value
of S8.
Note
that
the value
of
the
registers
is
an
expres-
sion of
seconds.
6.12 Register
S9
-
Carrier Signal
Detect
Time
To
Display
Modem
To Change
Status, Enter:
Displays:
Status,
Enter:
AT
S9?
<CR>
6
AT
S9=n
<CR>
(600 msec.)
(n=0~255)
Do
not confuse
the
purpose
of
this register with that of
S7 - Wait
for Carrier.
Register
S9
determines
how
long the
carrier signal
6-8