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Appendix A: AT Commands
90
ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D
Command Function
Carrier Detect (CD) Control Line Options
&C0 CD forced On
&C1 CD normal
&C2 CD off with local disconnect (LOCD)
&C3 CD off with Link Down
Data Terminal Ready (DTR) Control Line Options
&D0 Ignore DTR
&D1 DTR Off forces command
&D2 Idle when Off, DTR Off forces idle (On allows auto answer)
Generic Unit Configurations
&F0 Resets all S-registers to factory preset values
&F1 Configures unit for Dial 56k sync
&F2 Configures unit for Dial 64k sync
&F3 Configures unit for Dial 112k sync
&F4 Configures unit for Dial 128k sync
&F5 Configures unit for Leased 64k
&F6 Configures unit for Ldm 64k master
&F7 Configures unit for Dial 57.6k async
&F8 Configures unit for Dial 115.2k async
&F11 Configures unit for FALLBACK 57.6k async
Network Options
&L0 Dial network
&L1 Leased network
Calling Number Identification
&N0 Number 1. Read far-end phone number 1 if service subscribed from
telephone company.
&N1 Number 2. Read far-end phone number 2 if service subscribed from
telephone company.