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61200051L1-1D ISU 2x64 Dual Port ISDN Service Unit User Manual 89
Appendix A
AT Commands
This Appendix lists the supported AT commands and descrip-
tions of their functions. Bold text indicates default settings.
Command Function
A Answer. Puts the ISU 2x64 in answer mode.
D Dial. Precedes the telephone access number [ATD5551212].
H Hang up. Disconnects the current call.
O On line. Commands the unit to go back on line.
S S Register.
SS S String register.
Z Reset. Resets the AT command processor.
&W Save. Save current configuration to EEPROM.
+++ Break in. Break in AT command processor during an active call. The
break in character can be defined in S2.
_U Reset ISDN interface.
!S Dump Status Buffer contents to the DTE port.
_Z Power resets unit.