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O1
P
Q_
Q0
Q1
Q2
Sr?
r=0-30 Read and display value in register r
Sr=n
T
V_
V0
V1
W
W0
W1
W2
X_
X0
X1
X2
X3
X4
Y_
Y0
Y1
Z_
Z0
Z1
3.4 Extended AT Commands
&C_
&C0
&C1 Turn on Carrier Detect signal when remote
&D_
&D0
Return to Data Mode and initiate an equalizer
retrain
Set Pulse dial as default
Modem sends responses
Modem does not send responses
Modem sends responses in originate mode but
not in answer mode
Set register r to value n (r=0-30; n=0-255)
Set Tone Dial as default
Numeric responses
Word responses
Report Connect at DTE speed only.
Report Connect at DTE speed with negotiation
progress
Report Connect at DCE speed only
Hayes Smartmodem 300 compatible
responses/blind dialing
Same as X0 plus all CONNECT responses/
blind dialing
Same as X1 plus dial tone detection
Same as X1 plus busy signal detection/blind
dialing
All responses and dial tone and busy signal
detection
Modem does not send or respond to break
signals
Modem sends break signal for four seconds
before disconnecting
Reset and retrieve active configuration
profile 0
Reset and retrieve active configuration
profile 1
Force Carrier Detect Signal High (ON)
carrier signal is present
Modem ignores the Data Terminal Ready
signal
7
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