Date: Sat, 23 Jan 1999 18:05:20 +0100 (MET) From: hm@hcs.de (Hellmuth Michaelis) To: wam@sa.fedex.com (William McVey) Cc: freebsd-isdn@FreeBSD.ORG Subject: Re: I4B support for US ISDN? Message-ID: <m1046Ur-00006RC@hcswork.hcs.de> In-Reply-To: <199901230106.TAA19361@s07.sa.fedex.com> from William McVey at "Jan 22, 99 07:06:35 pm"
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>From the keyboard of William McVey: > Several months ago I found out through this list that the current > ISDN for BSD package does not support the ISDN protocols in use in > the US. It was explained that documentation was lacking for the > US ISDN low level protocols. Subsequent to that, some references* > to for ISDN in the US were mailed to the list. I was wondering if > these resources were enough to begin doing the port to the US > protocols? Hmm, i'd like to ask a different set of questions: 1) What is the most widely used ISDN protocol stack in the US ? 2) What are the the Part-, Order- or Standard numbers for the description of the D-channel layer one, two and three for the protocol answered by (1) and where can i get a copy of them (without paying $$$) ? When i get answers to these questions, i'll try to get the docs for the D-channel protocol. After reading those docs, i'll probably be able to answer _your_ question :-) > Also, I could make available account access to a freebsd box which > system which could be connected to the serial console of another > machine with an USR Sportster TA connected to a a US NT1 switch. In case this is an external TA connected to your machine with a serial cable, this does not help much - anyway, thanks for the offer! What is needed is a FreeBSD machine with a passive card using the standard Siemens chipset connected to an ISDN S0 bus or U ref point. Currently i have no idea, whether in the US the S0 bus or U ref point is the preferred connection (last time i was in the US i looked at Fry's and found only U connected US-made cards). I know that some of the same cards i4b currently supports are sold in the US with an U-interface, _that_ would be an ideal starting point. If there were a good hardware setup, docs available, a reasonable chance to get it run and a (good [i'm getting old ;-)]) place to sleep, i'd even come over for a week or two and implement it ..... > * The two references which seemed to have the most content were Bellcore's > site at http://www.bellcore.com/ISDN/ and the North American ISDN Users' > Forum at http://www.niuf.nist.gov/misc/niuf.html I've scanned them, i even have downloaded a couple of ISDN standards from US ISDN sites, but either question 1 and/or 2 were not answered by reading them. It is at least difficult to find authorative answers to those questions from Europe. Over here i at least had a chance to tap an S0 bus, look at the data on the D-channel and compare that to standard texts until i found the right one ;-) hellmuth -- Hellmuth Michaelis Tel +49 40 559747-70 HCS Hanseatischer Computerservice GmbH Fax +49 40 559747-77 Oldesloer Strasse 97-99 Mail hm [at] hcs.de 22457 Hamburg WWW http://www.hcs.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message
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