Modem Commands A-1
Modem Commands
AT Commands
Command
Description
Default
A/ Repeat last command
A Answer a call
B0 Select ITU-T modulation at 300 and
1200bps
B1 Select Bell modulation at 300 and 1200bps X
Dn Dial, where n =
P — Pulse dial
T — T one dial
W — Wa it for dial tone
, — Pause
! — Fla sh hook
@ — Wa it for 5 seconds silence
; — Return to command mode
^ — T oggle calling tone enable/disable
E0 Disable command echo
E1 Enable command echo X
H0 Go on-hook
H1 Go off-hook
L0 Set lowest speaker volume
L1 Set speaker volume to low X
L2 Set speaker volume to medium
L3 Set speaker volume to high
M0 Speaker is always off
M1 Speaker is on during call connection X
M2 Speaker is always off
M3 Speaker is off during dialing and on dur ing
call connection