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Appendix B: AT Command
A
Go off-hook and attempt to answer a call
&Cn Control Carrier Detect (CD) Signal
&C0 CD override
&C1 Normal CD operations
Dn Dial
0-9 DTMF digits 0 to 9
P Pulse
(rotary)
dial
T Tone
dial
W
Wait for second dial tone
^
Toggles calling tone enable/disable
&Dn DTR
Option
&D0 Ignore an on-to-off transition of DTR
&D1 Switch to on-line command mode without disconnection
&D2 Normal DTR operations
&F Load Factory Configuration(Profile)
Hn Disconnect
(Hang-up)
H0
Hang up (go on-hook)
H1 Go
off-hook
In Identification
I0 Report
product
code
I2
Report "OK" or "ERROR"
I3 Report
driver
revision
I4
Report OEM defined identifier string
Mn Speaker
Control
M0 Speaker is always off
M1 Speaker
ON
until
CONNECT
M2 Speaker is always on
M3 Speaker off during dialing and receiving carrier and turn speaker on during
answering
On Return to On-Line Data Mode
O0 Go
on-line
O1 Go on-line and retrain
