A-1
Appendix A
Modem Operation
Your communications software will handle most, if not all, of the
Netopia ISDN Modem operations; however, there may be
circumstances where you will want to access the ISDN modem
directly. This appendix covers modem basics and operating the
Netopia ISDN modem manually from the keyboard. At the end of this
chapter is a summary of AT commands, S registers, and result
codes.