Extended At Commands - IBM PCI Data/Fax Modem User Manual

Command
V_ V0
V1
W_ W0
W1
W2
X0
X_
X1
X2
X3
X4
Y_ Y0
Y1
Z_ Z0
Z1

Extended AT commands

Command
&C_
&D_
&F_
&G_
&K_
&L_
Function
Numeric responses
Word responses
Report DTE speed only
Report line speed, error correction protocol, and DTE speed.
Report 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 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 profile 0
Reset and retrieve active profile 1
Function
&C0 Force Carrier Detect Signal High (ON)
&C1 Turn on CD when remote carrier is present
&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 Recall factory default configuration
&G0 Guard tone disabled
&G1 Guard tone disabled
&G2 1800 Hz guard tone
&K0 Disable flow control
&K3 Enable RTS/CTS hardware flow control
&K4 Enable XON/XOFF software flow control
&K5 Enable transparent XON/XOFF flow control
&K6 Enable both RTS/CTS and XON/XOFF flow control
Modem is set up for dial-up operation
&L0
Appendix A. Manual modem commands
A-3