TIL that they can get stuck in no-man's-mand with 2 pairs. That seems stupidly-incompatible, and it isn't something I've witnessed myself, but it makes sense that it can happen.
My intent wasn't to dissuade anyone from trying to make existing cat 3 wire work (which I've never encountered in any home, but I've not been everywhere), but to try to set reasonable expectations and offer some workarounds.
If a person has a house that is still full of old 2- or 4-pair wire, and that wire is actually cat3, and is actually home-run (or at least, features aspects that can usefully-intercepted), then they should absolutely give it a fair shot.
I agree that the as a practical matter, the specifications are more guidelines than anything else.
I've also gone beyond 100 meters with fast ethernet (when that was still the most commonly-encountered) and achieved proven-good results: The customer understood the problem very well and wanted to try it, so we did try it, and it was reliable for years and years (until that building got destroyed in a flood).
If the wiring is already present and convenient, then there's no downside other than some time and some small materials cost to giving it a go. Decent-enough termination tools are cheap these days. :)
(Most of the cat3 I've ran has been for controls and voice, not data. Think stuff like jails, with passive, analog intercom stations in every cell, and doors from Southern Steel that operate on relay logic...because that was the style at the time when it was constructed. Cat3, punch blocks, and a sea of cross-connect wire still provides a flexible way to deal with that kind of thing in an existing and rather-impervious building -- especially when that building's infrastructure already terminates on 25-pair Amphenols. I'll do it again if I have to, but IP has been the way forward even in that stodgy slow-moving space for a good bit now.)
My intent wasn't to dissuade anyone from trying to make existing cat 3 wire work (which I've never encountered in any home, but I've not been everywhere), but to try to set reasonable expectations and offer some workarounds.
If a person has a house that is still full of old 2- or 4-pair wire, and that wire is actually cat3, and is actually home-run (or at least, features aspects that can usefully-intercepted), then they should absolutely give it a fair shot.
I agree that the as a practical matter, the specifications are more guidelines than anything else.
I've also gone beyond 100 meters with fast ethernet (when that was still the most commonly-encountered) and achieved proven-good results: The customer understood the problem very well and wanted to try it, so we did try it, and it was reliable for years and years (until that building got destroyed in a flood).
If the wiring is already present and convenient, then there's no downside other than some time and some small materials cost to giving it a go. Decent-enough termination tools are cheap these days. :)
(Most of the cat3 I've ran has been for controls and voice, not data. Think stuff like jails, with passive, analog intercom stations in every cell, and doors from Southern Steel that operate on relay logic...because that was the style at the time when it was constructed. Cat3, punch blocks, and a sea of cross-connect wire still provides a flexible way to deal with that kind of thing in an existing and rather-impervious building -- especially when that building's infrastructure already terminates on 25-pair Amphenols. I'll do it again if I have to, but IP has been the way forward even in that stodgy slow-moving space for a good bit now.)