On Mon, Jun 11, 2018 at 11:51 PM, François Lacombe < fl.infosrese...@gmail.com> wrote:
Could someone confirm that point to point or GPON fibre networks are > connected to a telephone exchange building too? > I think that's a reasonable assumption that will rarely be incorrect. Fibre was first used to replace many copper lines between telephone exchanges and all else has been built upon from that. First with ADSL where the DSLAMs were in the exchange. Later with FTTC and FTTP where the exchange was the star point for tunnels/hubs/poles. Note for technical purists: that was a gross oversimplification. > Can we call a fibre dedicated building a telephone exchange also ? > > A good question. And the answer is, it depends. LINX (London Internet Exchange) is an example of a fibre-dedicated building that isn't about voice (although VoIP may pass through it as just one component of all the traffic). I wouldn't call it a telephone exchange. OTOH, BT/Openreach plans to switch all POTS over to VoIP over FTTC/FTTP. When that happens the old telephone exchanges will be fibre dedicated, but they will still be telephone exchanges. It's possible telcos have buildings that are star points for fibre trunks with no local loops. I wouldn't call those telephone exchanges. Depending on the packet protocols they may not even be internet exchanges. My feeling on this is that if it has local loops (or the FTTC/FTTP equivalent) it's a telephone exchange; if it doesn't have them it's not. -- Paul
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