Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!news.cs.indiana.edu!cs.widener.edu!ukma!aunro!ersys!davem From: ersys!davem@nro.cs.athabascau.ca (Dave McCrady) Newsgroups: comp.dcom.modems Subject: Re: Will T2500 cycle all speeds if S50=3? Message-ID: Date: 19 Mar 91 17:30:59 GMT References: <1991Mar18.143749.1250@crom2.uucp> Organization: Edmonton Remote Systems, Edmonton, AB, Canada Lines: 27 jim@crom2.uucp (James P. H. Fuller) writes: > > Because several of my local callers have old and/or dimwitted modems > that get confused and can't connect if I set my T2500's S50 register to 0 > (automatic speed determination, with either PEP or V.32 tones first, > depending on S92) I presently have S50=3. That sends 2400bps tones first > and the local folx are happy, but as I read the manual (it's not totally > clear on this point -- or maybe it is but I just don't like what I'm read- > ing...) the modem is ONLY going to cycle among 2400-1200-300bps and NEVER > send PEP or V.32 tones. Is this correct? Is there a register setting that > will start with 2400bps tones but still cycle through ALL the others and > give a fast connect to somebody calling in PEP or V.32 mode? The reason > this has suddenly become significant is that I have groff 1.0 binaries for > ISC Unix that I want to make available to the world in general via anon-uucp > and while nobody around here ever calls in PEP mode I expect that people > looking for groff would want a high-speed connection only (it's not as big > as emacs but it's still a whopper.) S50=3 forces 2400 bps ONLY. Connects at any other rate will fail. You should set S50=0. Then set S92=1. S92 controls the sequence of answer tones issued by the modem (pp 56-2 and 56-3 of the manual). Dave McCrady | ersys!davem@nro.cs.athabascau.ca +1 403-454-4054 (voice) | Disclaimer? Who needs a disclaimer? +1 403-454-6093 (public USENET) | I >own< the joint.