AT Commands and S-Registers
B-3
Issue 1 April 1994
Table B-1. AT Command and S-Register List (2 of 34)
AT
Command/
S-Register
Description
D
n
Dial
Any digit or symbol (0–9, *, #, A, B, C, D) may be
dialed as touch-tone, but only 0–9 can be dialed
in Pulse Dial mode. A dial string can be up to
40 characters long. Spaces, hyphens, and
parentheses do not count; these characters are
used to enhance readability and are ignored.
Dial Command Modifiers
The following modifiers can be used in a dial
string:
T
Touch-tone dialing. Any digit 0–9, * , # , A,
B, C, or D is valid.
P
Pulse dialing. Only the digits 0–9 are valid.
,
Pause. The DataPort 2001 pauses before
processing the next character in the dial
string. Pause length is determined by the
value of
S8 (Pause Time).
W
Wait for dial tone. The DataPort 2001
waits for a second dial tone before
processing the dial string. This can be the
initial dial tone or can be used when dialing
through a tandem PBX. For example:
ATDT9W555-6789
;
Return to Command mode. Allows
AT command strings that exceed the
40-character limit to be linked together.
This is useful when using a calling card
number or an international telephone
number. The DataPort 2001 remains in
Command mode until a dial string ends
without a semicolon.
