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Newsgroups: comp.unix.bsd.freebsd.misc,comp.dcom.isdn Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!news.unimelb.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!news.uoknor.edu!news.nodak.edu!netnews1.nwnet.net!news.u.washington.edu!uw-beaver!nntp.cs.ubc.ca!news.cyberstore.ca!van-bc!io.org!chi-news.cic.net!usc!howland.reston.ans.net!nntp.crl.com!pacbell.com!amdahl.com!netcomsv!uu4news.netcom.com!calcite!vjs From: vjs@calcite.rhyolite.com (Vernon Schryver) Subject: Re: Motorola Bitsurfer Pro + FreeBSD Message-ID: <DJL3r9.MCC@calcite.rhyolite.com> Organization: Rhyolite Software Date: Thu, 14 Dec 1995 16:13:57 GMT References: <4ab9fe$d14@murphy.servtech.com> <DJKC80.Aqu@rci.ripco.com> Lines: 32 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:10432 comp.dcom.isdn:23168 In article <DJKC80.Aqu@rci.ripco.com> dr@ripco.com (David Richards) writes: >In article <4ab9fe$d14@murphy.servtech.com>, >Ivan Pulleyn <ivan@carcass.roc.servtech.com> wrote: >>Hi, >> Has anyone ever used the Motorola Bitsurfer Pro with MPPP (that's >>2 B channels at the same time ) for ISDN access to a service provider? I am >>considering this, but want to know how happy it is with FreeBSD. > >With a normal async serial card (and perhaps sync->async PPP turned on in >the BSPro) you'll only be able to use 115.2Kbps of the 128KBps available >from ISDN. > >The channel aggregation is not a function of PPP but is implemented in the >ISDN equipment at each end- there's still many competing ways of doing >it so you may wish to check compatibility with wherever you'll be calling >into. > >To FreeBSD it'll just look like a fast serial port, and sets up like any >other PPP connection. The channel aggregation of devices like that BitSurfer is a function of PPP, albeit PPP in the ISDN Terminal Adapter. Judging from what I've seen at the private (i.e. vendor-only) interoperability tests, most implementations of MP (RFC 1717) or multilink PPP are not in ISDN TA's. The TA vendors are latecomers to the party, although they are very welcome because of what their boxes make possible (more than 64 kbps to dumb boxes with dumb PPP software). Someday, someone will put MP into the freeware PPP implementations. Vernon Schryver vjs@rhyolite.com