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Date:      Fri, 24 May 1996 12:21:35 -0400
From:      dennis@etinc.com (Dennis)
To:        Michael Hancock <michaelh@cet.co.jp>
Cc:        hackers@freebsd.org
Subject:   Re: SDL cards
Message-ID:  <199605241621.MAA01179@etinc.com>

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>On Thu, 23 May 1996, Karl Denninger, MCSNet wrote:
>
>> > "Expensive" is a relative question, as always.  They do have the
>> > advantage of actually mostly working, so you'll save a lot of time
>> > trying to get ISDN D channel signaling software to work.  And then
>> > tweaked to support the different phone switches, NI-1 vs. AT&T Custom,
>> > different switch software "features", etc.
>
>[..]
> 
>> > You should see the Pipeline 130 - T1 with built-in CSU/DSU and ISDN
>> > BRI with NT1 in the same sized box.  Making it bigger than necessary
>> > only makes it cost more.  I've got a P50 LS56 on a 56K Frame Relay
>> > circuit at home, and it works great.
>> 
>> Yeah, ain't that a neat box?  An ISPs dream - T1 access with integrated ISDN
>> dial backup (!) on one or two "B" channels.  I love those damn things; now
>> if I could just get some shipped! :-)
>> 
>> Oh, they're cheap too (~$2k).  CISCO, watch out in the access router
>> marketplace; you have some serious competition out there.
>
>Cisco wasn't exactly the leader in this area.  They are playing catching
>up to the Livingston's and the Ascends. 
>
>> > Disclaimer: at my day job, I work at UUNET Technologies, and we have
>> > about 500 Ascend MAX 4000 boxes deployed in the field on about 1000
>> > ISDN PRI's.  Having the product work is a big feature.
>> 
>> Yep.  I run MCSNet, and we switched about a month ago from traditional
>> modems to Maxen as well.  We also find that they work quite well.  Still
>> some software quirks, but I'd never go back to the old way.
>> 
>> Being able to get 500+ lines in one 84" cabinet is a big plus :-)
>
>Granted.  Ascends are very very nice.
>
>But there is no hack value.  An ISDN-only solution using a P6 box with 3
>busmastering SDLComm RISCom/Pri cards handling 69 incoming ISDN
>connections with STAC compression would be very cool.

Yes and so would a molecular partical transporter :-)

Dennis
----------------------------------------------------------------------------
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Synchronous Communications Cards and Routers For
Discriminating Tastes. 56k to T1 and beyond. Frame
Relay, PPP, HDLC, and X.25 for BSD/OS, FreeBSD 
and LINUX




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