At commands, 4 at commands, s-registers, and result codes – Multi-Tech Systems MT5600BL User Manual
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4 AT Commands, S-Registers, and Result Codes
33
AT Commands
Command:
AT
Attention Code
Values:
n/a
Description:
The attention code precedes all command lines except A/ and
the escape sequence.
Command:
E
NTER
Key
Values:
n/a
Description:
Press the E
NTER
or R
ETURN
key to execute most commands.
Command:
A
Answer
Values:
n/a
Description:
Answers an incoming call before the final ring.
Command:
A/
Repeat Last Command
Values:
n/a
Description:
Repeats the last command string. Do not precede this com-
mand with AT. Do not press E
NTER
to execute.
Command:
B
n
Communication Standard Setting
Values:
n = 0 or 1
Default:
1
Description:
B0
Selects ITU-T V.22 mode when the modem is at 300 or 1200
bps.
B1
Selects Bell 212A when the modem is at 300 or 1200 bps.
Command:
D
s
Dial
Values:
s = dial string (phone number and dial modifiers)
Default:
none
Description:
Dials telephone number s, where s may up to 40 characters
long and include the following dial string modifiers. Spaces,
parentheses, and hyphens are ignored.
0–9
Digits 0 through 9
*
The “star” digit (tone dialing only)
#
The “pound” digit (tone dialing only)
A–D
A, B, C, and D tone digits. Country specific; some countries
may prohibit these digits.
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 or X4
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 the time
specified in S29, then off-hook again .
@
Wait for silence. Causes the modem to wait for 5 seconds of