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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!metro!munnari.OZ.AU!news.mel.connect.com.au!news.mel.aone.net.au!grumpy.fl.net.au!news.webspan.net!www.nntp.primenet.com!nntp.primenet.com!howland.erols.net!news.sprintlink.net!news-peer.sprintlink.net!gail.ripco.com!dr From: dr@ripco.com (David Richards) Newsgroups: comp.dcom.isdn,comp.unix.bsd.freebsd.misc Subject: Re: ISDN TA's supported for BSD Unix? Date: 4 Feb 1997 01:28:36 GMT Organization: Ripco Communications Inc. Lines: 30 Message-ID: <5d63c4$7p2$1@gail.ripco.com> References: <dkulp-ya023380000102971144510001@darkstar.ucsc.edu> <5d0nq3$7m2@news-2.csn.net> <5d2goc$fvp@grobbebol.grobbebol> <JUN.97Feb4095800@goten.sinfony.ad.jp> NNTP-Posting-Host: rci.ripco.com Xref: euryale.cc.adfa.oz.au comp.dcom.isdn:48128 comp.unix.bsd.freebsd.misc:35096 In article <JUN.97Feb4095800@goten.sinfony.ad.jp>, Junichi Kurokawa <jun@goten.sinfony.ad.jp> wrote: >In article <5d2goc$fvp@grobbebol.grobbebol> >bengel@xs4all.nl (Roeland Th. Jansen) writes: > >In comp.dcom.isdn John J. Rushford <wjjr@bugs.alisa.org> wrote: > >> any special drivers. Also, I believe that you don't get the full > >bandwidth > >> available on 128K ISDN with a serial connection. > > > >and your belief is wrong in this case. as long as the TA controls the flow > >(cts/rts) -- it's OK. some TA's support data rates at a max of 921k6. > >You are wrong. > >Only Macs can do 234000bps with their syncronous Geoport bus. Most >other hardwares such as your PC's are limited to 16550A's 115200bps >limit or even slower, making them meaningless on MP'ed links. Macintosh isn't _that_ special- PC's take PC ISA bus cards, which are available in async speeds through 230Kbs, and can also accept _sync_ serial cards at similar speeds. There're also inexpensive internal cards ($170-$270) which can easily handle the 128Kbps raw ISDN bandwidth, and support compression. -- David Richards Ripco, since Nineteen-Eighty-Three My opinions are my own, Public Access in Chicago But they are available for rental Shell/SLIP/PPP/UUCP/ISDN/Leased dr@ripco.com (773) 665-0065 !Free Usenet/E-Mail!