AT Commands Table 57
AT Commands Table 6
AT Data Commands 6
The shaded portion of the table are stored with the AT&W command.
Command Specification Default
A/ Repeat last command.
A Answer command.
D Dial
T 123456789*0#ABCD
3
P 1234567890
W Wait for dial tone. Modem waits for a second dial tone before processing the
dial string.
@ Wait for quiet answer.
‘ Pause for a time specified by S8 before dialing.
! Hook flash
; Return to command mode after processing command.
S=n Dial a telephone number previously stored using the &Zn=x command. The
range of n is 0-3.
E 0 Disables echo to the computer
1 Enables echo to the computer
3
H 0 Modem goes on-hook
3
1 Modem goes off-hook
I 0 Returns modem identity string and driver version number, same as I3
1 Calculates ROM checksum and displays it on the DTE.
2 Performs a ROM check and calculates and verifies the checksum, displaying OK
or ERROR.
3 Returns modem identity string and driver version number, same as I0
L 0 Selects low volume.
1 Selects low volume.
2 Selects medium volume.
3
3 Selects high volume.
M 0 The speaker is off.
1 The speaker is on until the modem detects the carrier signal.
3
2 The speaker is always on when modem is off-hook.
3 The speaker is on until the carrier is detected, except while dialing.
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