7
3.3
Basic AT Commands
In the following listings, all default settings are printed
in bold text.
Command
Function
A
Manually answer incoming call
A/
Repeat last command executed. Do not precede
A/ with AT or follow with ENTER
AT
Appears at the beginning of every command
line
B_
B0
CCITT mode
B1
Bell mode
D_
0 - 9, A-D, # and *
P
pulse dialing
R
originate calls in answer mode
T
touch-tone dialing
W
wait for second dial tone
,
pause
@
wait for five seconds of silence
!
flash
;
return to Command Mode after dialing
DS=n
Dial one of the four telephone numbers (n=0-
3) stored in the modem’s non-volatile memory
E_
E0
Commands are not echoed
E1
Commands are echoed
+++
TIES Escape Characters - Switch from Data
Mode to Command Mode
H_
H0
Force modem on-hook (hang up)
H1
Force modem off-hook (make busy)
I_
I0
Display product-identification code
I1
Factory ROM ID
I2
Internal memory test
I3
Device ID
I4
Internal ID
L_
L0
Low speaker volume
L1
Low speaker volume
L2
Medium speaker volume
L3
High speaker volume
M_
M0
Internal speaker off
M1
Internal speaker on until carrier detected
