B-18 Appendix B Date Code 20010518
SEL-2020 Instruction Manual
Table B.5: AT Command Set Description - Part # XE1414V (continued)
Basic
Commands
Function
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
&P0 Pulse dial make/break ratio of 39/61 (USA/Canada)*
&P1 Pulse dial make/break ratio of 33/67 (Europe/Hong Kong)
&S0 DSR always active*
&S1 DSR in accordance with V.25
&T0 Terminate test in progress*
&T1 Begin local analog loop-back test
&T3 Begin local digital loop-back test
&T4 Accept a request from a remote modem for remote digital loop-back test
&T5 Reject a request from a remote modem for remote digital loop-back test
&T6 Begin a remote digital loop-back test
* Modem factory default settings
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