FEDL 7012-03-01
1
Semiconductor
ML7012-03
(3) AT command list
It is regarded that n = 0 when the parameter is not specified to the command with parameter (n).
CMD
Style
—
Function
Goes to on-line command mode from data mode.
Inputs +++AT <CR> in data mode.
Does not move to on-line command mode until <CR>is
input.
Initial Value
Note
+++AT
<CR>
—
A
ATA
ATD
Starts line connection in answer mode
Starts line connection in originate mode
Connects lines in originate mode after dialing.
c: Dial control character
—
—
Pulse: 0, 1, 2, 3 ,4, 5, 6, 7, 8, 9
Tone: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, *, #
@ Silence Detection
Next dialing is executed when continuous silence of 5 sec is
detected after ring back tone within the period specified in S7
register.
Sends back ‘BUSY’ when busy tone is detected and sends
back ‘NO ANSWER’ when no silence is detected after ring
back tone.
! Flash
Dialing is put on hold for the period specified in the S8
register for pause settings.
D
ATDc
—
,Comma
The line is put on-hook for 0.5 sec.
Dialing is put on hold for the period specified in the S8
register for pause settings.
; Moves to command mode without disconnecting lines after
dialing is completed.
P: Dials the number in pulse mode thereafter.
T: Dials the number in tone mode thereafter.
W: Detects a dial tone.
Detects the next dial string process when dial tone is
detected during the period specified in S7 register
regardless of ATXn command settings.
When it is not detected, ‘NO DIALTONE’ is returned.
Selects the answer-back function for the commands.
N = 0: No answer back for command input characters.
N = 1: Answer back for command input characters.
Controls the line connection.
E
ATEn
1
H
I
ATH
ATI
N = 0: On-hook
N = 1: Off-hook
Displays the modem manufacturer’s code
Selects the monitor speaker operation.
N = 0: Always OFF
—
—
M
O
ATMn
ATO
N = 1: ON from dialing to line connection
N = 2: Always ON
N = 3: ON when connected with a remote modem
1
Goes to data mode from on-line command mode.
—
11/22
OKI [ OKI ELECTRONIC COMPONETS ]
