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CHAPTER 5: AT Commands, S-Registers, and Result Codes
B16
Select Bell 103J when the modem is at 300 bps.
Command:
Ds
Dial
Values:
s = dial string (phone number and dial modifiers)
Default: none
Description:
Dial telephone number s, where s may up to 40
characters long and include the 0–9, *, #, A, B, C,
and D characters, and the L, P, T, W, S, comma (,),
semicolon (;), !, @, ^, and $ dial string modifiers.
Dial string modifiers:
L
Redial last number. (Must be placed
immediately after ATD.)
P
Select pulse-dialing until a T is encountered.
Affects current and subsequent dialing.
T
Select tone-dialing until a P is encountered.
Affects current and subsequent dialing.
W
Wait for a new dial tone before continuing to
dial. (X2, X4, X5, X6, or X7 must be selected.)
,
Pause during dialing for time set in register S8.
;
Return to command mode after dialing. Place
at end of dial string.
!
Hook flash. Causes the modem to go on-hook
for one-half second, then off-hook again.
@
Wait for quiet answer. Causes modem to wait
for a ring back, then 5 seconds of silence,
before processing next part of command. If
silence is not detected, the mode returns a NO
ANSWER code.
^
Disable data calling tone transmission.
$
Detect AT&T call card “bong” tone. The
character should follow the phone number
and precede the user’s call card number:
ATDT1028806127853500$123456789
.