Date: Tue, 18 Mar 1997 10:40:00 -0800 From: David Clark <bigdave@ai2a.net> To: fellow@simplex.nl Cc: freebsd-questions@FreeBSD.ORG Subject: Re: TRUST Message-ID: <332EE180.3C31@ai2a.net> References: <332460B5.2A2A@simplex.nl>
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barend vd berg wrote: > > L.S.; > > Hello, my internet provider says that i get disconnects(they use FREE > BSD) because of my NOT A class modem. > It is an OEM Trust (Hayes comp.) 14k4 faxclass 0,1,2 !! > Is it so that freebsd can only be used with Macintosh and(i have a PC) > Tornado modems !? > > Puzzled, > > Barend Hi, I run a FreeBSD host system that works with ANYTHING! Lets look first at the modem INITialization string. This instructs the modem how it should behave when being used. Init strings are generally quite different for each make and model of modem! To properly setup ANY modem, you must have the printed manual for your modem. It has a section generally entitled AT COMMAND REFERENCE (or similar). The init string should always start with the following: +++at After this startup, you merely add those features which you need to set. Typical ISP operations require that you have the following features set: reset modem to factory defaults &F remote carrier detect state &C1 hangup if DTR signal drops $D2 use hardware handshaking &K3 DISABLE error control \N0 DISABLE data compression %C0 Remember, check your manual for the correct init string commands for your specific modem. Those above are fairly typical - but are not necessarily going to be correct for your modem. Once you have the correct set of commands, just concatenate them. For example: +++AT&F&C1&D2*K3\N0%C0 Be sure that if you use UPPERCASE alpha characters in your string that you use them throughout the init string. You may instead use lowercase alpha characters - again so long as you use them across the entire init string. MAC init strings nearly always use $D0 whereas PC init strings nearly always use &D2 as a part of the init string. Using the above set of commands is an adequate starting point for making your modem connect properly. You can experiment with turning data compression and/or error control back on after you get the modem connecting reliably. (I advise all my clients to turn off the data compression and error correction and LEAVE it off!). David Clark
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