Appendix A. AT Commands
88 ISU 128 User Manual 61202.029L2-1
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 Reset 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 128K
&F6 Configures unit for Ldm 128K master
&F7 Configures unit for Dial 57.6K async
&F8 Configures unit for Dial 115.2K async
&F9 Configures unit for Dial PPP
&F10 Configures unit for Dial V34 115.2 async
&F11 Configures unit for FALLBACK 57.6K async
Network Options
&L0 Dial network
&L1 Leased network
Calling Number Identifiers
&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.
DTE Data Type Options
&Q0 DTE is async
&Q1 DTE is sync