From owner-freebsd-isp Sat Nov 16 07:46:12 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id HAA03255 for isp-outgoing; Sat, 16 Nov 1996 07:46:12 -0800 (PST) Received: from etinc.com (et-gw-fr1.etinc.com [204.141.244.98]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id HAA03246 for ; Sat, 16 Nov 1996 07:46:07 -0800 (PST) Received: from ntws (ntws.etinc.com [204.141.95.142]) by etinc.com (8.6.12/8.6.9) with SMTP id KAA13539; Sat, 16 Nov 1996 10:50:59 -0500 Date: Sat, 16 Nov 1996 10:50:59 -0500 Message-Id: <199611161550.KAA13539@etinc.com> X-Sender: dennis@etinc.com X-Mailer: Windows Eudora Version 2.0.3 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Joe Greco From: dennis@etinc.com (dennis) Subject: Re: changed to: Frac T3? Cc: isp@freebsd.org Sender: owner-isp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> >Cool, do it :-) The harder you push, the more likely it is someone will >> >take up the challenge of how to route more quickly. >> >> Gee...what I was hoping to get is what people need.....is there a substantial >> fractional T3 requirement? or does everyone need/want full T3? Would anyone >> buy a 32Mbs card, or is it a waste if it doesnt to full t3? It seems that >> there should >> be a market for relatively low-speed fiber....increasing the clock rate as >> you need >> bandwidth. 20 T1s is a lot of bandwidth. > >Hi Dennis, > >I guess it depends on whether or not it is sold as an option (by the >networking service provider)... I usually see people talk about frac-T1, >T1, and then immediately jump to T3. > >Translation: I see less of a market for frac-T3 than I do for T3. This totally confused me, and I cant belive its true. The cost differential between T1 and T3 is what, 12x or more.....it seems unlikely that anyone could take that much of a hit......Our upstream provider is on a 4Mbs HSSI and plans on moving up as needed. > >In my opinion, if I were you, I would certainly rev up my current >product to handle frac-T3, on the condition that doing so was not >a MAJOR re-engineering process. You were mumbling something about >PCI too, and I can see a PCI sync serial card capable of speeds from >56k to frac-T3 as being attractive... even if you leave the ISA >stuff alone. Our current product runs well over 10Mbs...but I dont think that many people realize the HSSI is just a faster version of V.35...you can run V.35 fractional T3 util you get over the 10Mbs physical limitations......ie, you can connect a V.35 product on one end of a T3 and HSSI on the other...its just like RS-232 and V.35 for lower speed stuff....they are not end-to-end requirements. >As for me: would I buy one? No. I do not see my own bandwidth needs >exceeding dual-T1 within a year, and at those rates, I would go dual-T1 >for redundancy's sake. In some places (canada, i believe), they are like giving away fiber....of course the service costs are astronomical....it seems a matter of time before fiber is much less expensive and T3 fracs are the way to add a T1 of bandwidth as needed.... Dennis