info-mac@uw-beaver (info-mac) (09/13/84)
From: BILLOIR@SRI-CSL.ARPA I am going to go back France shortly, with my Mac and Imagewriter; I would like also to bring a modem with me. I assume that it should work, possible differences in the telecommunication standard being taken in account in the realization of the corresponding phone sets, but ... Does anybody know for sure if it could work on the french phone net, or which brands can do it if such a restriction exists? -------
info-mac@uw-beaver (info-mac) (09/22/84)
From: Bjorn Lindskog <BJORN@WASHINGTON.ARPA> If I were you I'd be extremely careful if I wanted to buy a modem here in the US. Europe and US do use different standards for data tranfers over the public phone net. I did some hardware hacking a couple of years ago back home in Sweden and I found out that most of the application notes on modems (from US manufacturers) were more or less useless. The European standard uses frequencies much closer to each other than the US' which requires more complex filters. However, nowadays when modems are essentially one chip with digital filtering and other fancy stuff, it would really surprise me if the chip (and consequently the modem) manufacturers didn't try to make them international. I suggest you read the tech specs for the modem you intend to buy really carefully. Unfortunately I can't remember right now what our Europeean standard is called, it might be V.23 but I wouldn't bet on it. -- Bjorn -------