Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!alchemy!jhood Newsgroups: comp.dcom.modems Subject: Re: Controlling answer tone sequence From: jhood@alchemy.tcnet.ithaca.ny.us (John Hood) Message-ID: References: Date: Sat, 30 Mar 91 22:27:24 EST Organization: Alchemy International, Ithaca, N.Y. davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) writes: > I *know* how to set up a modem to re-initialize to the RAM settings > so when the DTR goes down it's all set to go. But I have a > USRobotics DS ($1,000) and two made-in-Japan Omrons ($300 each) > that don't allow enough parameters to be stored in the RAM; they > *must* be reinitialzed every call to get them to send the tones > from highest speed to lowest. If I can't re-init them for dialin > (initializing for dialout is no problem) with UNIX it means I have > to get modems that do. Technically trivial but an economic burden. > > From the replies that I've gotten (here and in mail) I take it > that you can't re-init a modem for dialin under ISC UNIX. I thought > so, but I wanted to make sure I hadn't overlooked something before > I shell out for new modems. > > Unless somebody has something new to add, I think that answers the > question: for UNIX, you have to use a modem who initialization for > dial-in can be stored wholly in the modem (via RAM or DIP switches). > > Thanks for the help everybody, I have something to add :) I see three possibilities you may want to try for your problem. 1) My (very old) USR HST has an undocumented feature-- setting the lowest bit of S13 will cause a modem reset on DTR drop. I have no idea if this still exists or is documented or has been replaced by something else or has been dropped entirely in the vastly different modem you have. 2) There is more than one Hayes modem compatible getty replacement out there that knows about setting up Hayes modems and using their connect messages to set the baud rate on the line. You may have to hack on something like this a bit to get it to work with your HST. 3) With the HST, you can use the &B1 command to keep the baud rate between modem computer fixed. RTFM. Caveats about flow control apply; look this stuff up too. --jh -- John Hood, student at large jhood@albert.mannlib.cornell.edu