Date Code 20010518 Appendix B B-11
SEL-2020 Instruction Manual
Table B.3: AT Command Set Description - Part # XE1414A (continued)
Basic
Commands
Function
O0 Go on line*
O1 Initiate retrain returning On Line
Q0 Enable result codes
Q1 Disable result codes
Sr? Read S register
Sr=n Write n to S register
V0 Send numeric result codes
V1 Send word result codes*
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
* Modem factory default settings
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