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