jack@boring.UUCP (Jack Jansen) (01/07/86)
We (not the CWI, somewhere else) would like to build a more-or-less universal modem, i.e. 1200 bd FDX, 300 bd HDX (both Bell and CCITT) and 1200/75 baud. This is because students have a variety of modems, and we have only one incoming phone line. The idea was to use the EXAR PSK chipset(XR212AS), and somehow combine it with the AMD single-chip FSK modem(AM7910). We would probably use a micro to cycle through the different carrier frequencies, until we hit the encoding used by the other party. Now for the questions: - Has anybody attempted this before? And, would they be willing to share information? - Is there a more simple solution to the problem? Please note that suggestions like 'buy that and that' aren't acceptable, since we have hardly any money, only lots of man(student)power. Please reply directly, and, in case of sufficient interest, I'll summarize. -- Jack Jansen, jack@mcvax.UUCP The shell is my oyster.