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MultiModemZPX User Guide
AT Commands
Command:
Values:
Description:
Command:
Values:
Description:
Command:
Values:
Description:
Command:
Values:
Description:
Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
4 AT Commands, S-Registers, and Result Codes
AT
Attention Code
n/a
The attention code precedes all command lines except A/ and
the escape sequence.
E
Key
NTER
n/a
Press the E
or R
NTER
action is frequently abbreviated <CR>.
A
Answer
n/a
Answers an incoming call before the final ring.
A/
Repeat Last Command
n/a
Repeats the last command string. Do not precede this com-
mand with AT. Do not press E
B n
Communication Standard Setting
n = 0–3, 15, 16
1 and 16
B0
Select ITU-T V.22 mode when modem is at 1200 bps.
B1
Select Bell 212A when modem is at 1200 bps.
B2
Deselect V.23 reverse channel (same as B3).
B3
Deselect V.23 reverse channel (same as B2).
B15
Select V.21 when the modem is at 300 bps.
B16
Select Bell 103J when the modem is at 300 bps.
D s
Dial
s = dial string (phone number and dial modifiers)
none
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 cur-
rent 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.
key to execute most commands. This
ETURN
to execute.
NTER
23
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