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INT
59h,
Function
4
-
Select
Pulse
Dialing
Entry:
AH =
4
(function
code)
AL=
dialing rate
(Onslow,
1
=fast)
Exit;
No
registers specified
If
the
hardware does
not
support
variable
dialing
rates
for
pulse
dialing,
the
parameter
in
AL
can be
ignored.
INT
59h,
Function 5
-
Select
Tone
Dialing
Entry:
AH =
5
(function
code)
AL =
dialing rate (0
=
siow,
1
=fast)
Exit:
No
registers specified
If
the
hardware
does
not
support
variable
dialing
rates
for
tone
dialing,
the
parameter
in
AL
can be
ignored.
INT
59h,
Function 6
-
Dial
Telephone
Number
Entry:
AH
=
6
(function
code)
AL=
length
o
f
dial
string
DX =
segment
address
of
dial
string
BX
=
offset
address
of
dial
string
Exit:
AL =
Standard
BIOS
error
code
If
an
error
occurs,
DX:BX
points
to
the
illegal
character
in
the
dial string.
The
dial
string
is
ASCII encoded.
The
following
characters are supported:
Digits
through
9
-
dial
the
number.
#
and
*
-
if
tone
dialing, dial
the
tone
if
pulse
dialing
give
error
P
-
switch
to
pulse
dialing
T
-
switch
to
tone
dialing
+
-
delay
1
second
before
dialing
the next
digit
All
other
characters are
illegal
and cause an
error
to
be
returned.
176
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