Sharing cables is a headache. Constant truck rolls fixing what others (ie, telco or cableco)has modified after your install. competitive pressures keep the budget tight on capex costs related to what's practical to get it going but in the long run those truck rolls start eating into the diminishing returns. Ethernet cable or Fiber has a longer ROI on investment however, if you can structure your easement or property agreements sufficiently you have better choices to chose from at your disposal in making the upgrades more practical. On Wed, May 19, 2021 at 10:33 AM, Brough Turner<bro...@netblazr.com> wrote: We're an urban WISP with most of our residential customers in MDUs. Most of these MDUs have Cat5e or Cat6 from central closets (usually per floor) into each unit. However, we have 13 buildings where we deployed Planet VDSL2 gear over older phone wire between 2013 & 2016. We stopped going after such buildings and stopped deploying new VDSL2 gear in 2017. Now Planet has discontinued the equipment we were using and we just used our only spare DSLAM, so we'll have to upgrade at least a few buildings (if only to obtain spares to keep the rest of our VDSL2 buildings alive). I have some G.hn experience. Back in 2017, we did a demonstration project with Korea Telecom using G.hn equipment that KT provided: http://www.madison-park.org/press/bostons-netblazr-korea-telecom-partner-supply-affordable-housing-residents-free-high-speed-internet/The building had older 25-pair telecom cables terminated on Type 66 blocks, i.e. 1970s(?) wiring. As we connected customers, the results got worse and worse, presumably the result of cross talk in the 25-pair bundles. In the end, results were still a bit better than the 70-80 Mbps we get from our Planet VDSL2 gear, but not much. One thing I noticed was the KT DSLAM (UbiQuoss U4224BU) had individual RJ11 jacks for each line. This compares with G.fast equipment that seems to connect via 25-pair cables. Talking to a KT engineer who came to Boston to help with the installation, I got the impression that most MDUs where this gear is used in Korea have Cat3 cabling, not 25-pair bundles. In any event, I'm a bit discouraged with G.hn. The pro-G.fast arguments include that it has better crosstalk protection, for example this: http://www.mocalliance.org/access/Broadband-technology-evaluation-and-analysis.pdfbut I have no experience as yet. If I go with G.fast, I'm aware of these vendors: Fast Systems (Robert Muller CTO)AdtranCalix I know Robert and have talked with him recently. But I don't have any experience with any G.fast equipment. If anyone has actually deployed G.fast in an MDU, I'd love to hear about the setup and your experience.
Thanks, Brough Brough Turner netBlazr Inc. – Free your Broadband! Mobile: 617-285-0433 Skype: brough netBlazr Inc. | Twitter | LinkedIn | Facebook -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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