*BSD News Article 44051


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From: Dick@Seaman.Chenequa.WI.US    (Richard Seaman, Jr.)
Newsgroups: comp.unix.bsd.bsdi.misc
Subject: Re: ISDN Support
Date: 13 May 1995 13:34:11 GMT
Organization: Alpha.net -- Milwaukee, WI
Lines: 51
Message-ID: <3p2cgj$qbf@homer.alpha.net>
References: <D8HrLr.BnG@emr1.emr.ca>
Reply-To: Dick@Seaman.Chenequa.WI.US(Richard Seaman, Jr.)
NNTP-Posting-Host: spro.seaman.quaestus.com
X-Newsreader: IBM NewsReader/2 v1.09

In <D8HrLr.BnG@emr1.emr.ca>, jjanarth@emr1.emr.ca (Jay Janarthanan) writes:
>Can some one tell me if BSDI support ISDN yet, I do not want to go out 
>and buy a 2000$ router, Also ISDN cost less then 56k from the telco.

I don't know anything about BSDI support for internal PC cards.  But, you
have several choices for external support.  

1) Buy an external async ISDN Terminal Adaptor and plug it into a RS232
   serial port on the PC.  Looks and acts just like a modem, except faster.

2) Buy an external sync ISDN TA, some of which output V35 and some RS232
   sync.  I believe BSDI does support at least one sync serial card (Riscom).

3) Buy an ISDN ethernet bridge or router.  Of course, there's nothing specific
   to any OS about these.  I understand that if you want to try to save money
   by buying the "single user" or "restricted user" versions of some of the
   ethernet bridges/routers, you can just add an ethernet board to your PC,
   connect the bridge/router to it directly with cross-over cable, and then
   use your BSDI machine to route a LAN.  Might save a few bucks over the
   "unlimited user" ethernet stuff, which is normally $300 to sometimes more
   than $1000 more expensive than the single user stuff.

These would appear to listed on order of increasing performance (and price).  Option
1 should cost less than $500 per end.  Also, you can get option 2 TAs for just
under $500, then ranging up to around $900.  Option 3 starts at around $750 and
goes up to around $1300.

BTW, there appear to be "unlimited user" ISDN ethernet routers with street prices
less than $1,250, so thats less than the $2,000 router you were thinking
about.

Also, ISDN tariffs are tricky and vary greatly area to area.  Here in
Wisconsin, you can get ISDN lines that you can use at 128kbps (by bonding 
2 B channels) for prices ranging from about $35/end/month to over $1500/end/month
depending on what tariffs are applicable.  When we setup our ISDN lines 
intially the orders got all screwed up.  We ordered (we thought) lines that
would give us unlimited usage for around $35/month.  Instead we go the
tariffs that would cost us $1500/month for 7/24 useage.  It is supposedly
fixed now.  But, my advice is, watch it all carefully.

In some parts of the country, you may not be able to get flat rate ISDN. Check
business vs. residential vs. centrex.  Also, for each, check the difference
between circuit switch voice and circuit switched data configurations.
Somtimes, if CSD has per minute charges, CSV may not.  Some ISDN equipment
will do data over CSV, though you may only get 56kbps instead of 64kbps
per B channel.

Richard Seaman, Jr.         Dick@Seaman.Chenequa.WI.US
5182 North Maple Lane       voice: 414-367-5450
Chenequa, WI 53058          fax:   414-367-5852