B-4 Appendix B Date Code 20010518
SEL-2020 Instruction Manual
Table B.1 AT Command Set Description – Radicom Part # 336MM-T-SEL (continued)
Basic
Commands
Function
X0 Basic response set, blind dialing
X1 Extended response set, blind dialing
X2 Extended response set, dial tone detection
X3 Extended response set, blind dialing & busy signal detection
X4 Extended response set, dial tone & busy signal detection*
Y0 Disable long space disconnect*
Y1 Enable long space disconnect
Z0 Reset to user profile 0*
Z1 Reset to user profile 1
Ampersand
Commands
Function
&C0 DCD always on
&C1 DCD on only in presence of the carrier signal*
&D0 Ignore DTR signal
&D1 Return to command mode after losing DTR
&D2 Hang up, turn off auto-answer, and go to command mode after losing DTR*
&D3 Reset after losing DTR
&F Restore factory configuration
&G0 No guard tone*
&G1 550 Hz guard tone
&G2 1800 Hz guard tone
&K0 Disable flow control
&K3 RTS/CTS flow control
&K4 XON/OFF flow control
&K5 Transparent XON/XOFF flow control
&K6 RTS/CTS and XON/XOFF flow control
&L0 Dial-up operation*
&L1 Leased line operation
* Modem factory default settings
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