ADTRAN ISU 512 - Manual (Page 102)

Appendix C. AT Commands
86 ISU 512 User Manual 61202.086L1-1
Data Terminal Ready (DTR) Control Line Options
&D0 - DTR ignored
&D1 - DTR Off forces command
&D2 - DTR Off forces idle (on allows auto answer)
Generic Unit Configurations
&F0 - Reset all S-registers
&F1 - Dial 512K
&F2 - Dial 384K
&F3 - Dial 448K
&F4 - Dial 336K
&F5 - Video 384K
&F6 - Video 336K
&F7 - Leased Slave (not available on the ISU 512 ST)
&F8 - Leased Master (not available on the ISU 512 ST)
&F9 Leased Slave Master (not available on the ISU 512 ST)
Network Options
&L0 - Dial Network
&L1 - Leased Network (not available on the ISU 512 ST)
Data Set Ready (DSR) Control Line Options
&S0 - DSR forced
&S1 - DSR if call up
&S2 - DSR if link up
Accessing Stored Numbers for Dialing Options
&Z0 - Stored number 0
&Z1 - Stored number 1
&Z2 - Stored number 2
&Z3 - Stored number 3
Table C-A
AT Commands
Command Definition Function