Date: Sat, 16 Nov 1996 10:10:12 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: dennis@etinc.com (dennis) Cc: jgreco@brasil.moneng.mei.com, isp@freebsd.org Subject: Re: changed to: Frac T3? Message-ID: <199611161610.KAA00293@brasil.moneng.mei.com> In-Reply-To: <199611161550.KAA13539@etinc.com> from "dennis" at Nov 16, 96 10:50:59 am
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> >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. I don't see that happening here, at least locally. What I usually see is people going for T3, the circuit costs are not so terribly different, and then the upstream provider meters bandwidth or performs rate limiting of some sort. > >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. Sure. But your ISA based product is going to get a little slow handling such high speeds, I would think? Maybe not. I would rather see a PCI based solution, but that is just personal preference. > >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.... Fiber is pretty cheap around here, that is why there is so much interest in T3. Lower latency, higher bandwidth. I can ping Karl's MCS.NET down in Chicago with about 3 or 4ms delay... :-) The way I see it going: bandwidth will continue to get cheaper over time. The circuits are already cheap and people are already buying them at T3 capacities. This is going to continue to be pushed by the development of 56K modem technologies, ADSL/cable modems, and other technologies to deliver high speed data services to the end user. That's how I see the game developing. I usually predict large scale leaps forward, and historically I have been shown to have made somewhat conservative predictions. :-) ... JG
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