MaxTech xpm56i V.34+ - Manual (Page 11)

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Sr=n Set register r to value n (n = 0-255).
T Set Tone Dial as default
V_ V0 Numeric responses
V1 Word responses
W_ W0 Report DTE speed only
W1 Report line speed, error correction
protocol, and DTE speed.
W2 Report 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 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 profile 0
Z1 Reset and retrieve active profile 1
3.4 Extended AT Commands
&C_ &C0 Force Carrier Detect Signal High (ON)
&C1 Turn on CD when remote carrier is
present
&D_ &D0 Modem ignores the DTR signal
&D1 Modem returns to Command Mode after
DTR toggle
&D2 Modem hangs up, returns to the
Command Mode after DTR toggle
&D3 Resets modem after DTR toggle
&F_ &F Recall factory default configuration
&G_ &G0 Guard tone disabled
&G1 Guard tone disabled
&G2 1800 Hz guard tone
&K_ &K0 Disable flow control
&K3 Enable RTS/CTS hardware flow
control
&K4 Enable XON/XOFF software flow control