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Originally Posted by injuneer
I think only Cabletel areas had remote subscriber concentrators at hubsites as far as I know. Nynex, Videotron & Bell Cable never adopted this method believing it was unneccesary with high capacity fibres.
Of course you have to remember that BT still has the majority of fixed line customers. Their exchange capacities are similar as they use the same types in a lot of cases. Ntl have about 100 switches, BT probably 10 times that.  |
I think South Wales was probably the only area with concentrators all located in the headend/switch, I visited a few hubs in other cabletel areas and the concs were in the hubs. I think this was a regional thing decided by the network operations manager from day one. I think the planning capacity people then decided they didn't need as much fibre around the hub ring, there was talk of moving the concentrators out to the hubs many years ago, but the amount of fibres as well as cost at a time when money was short made it a no go.
Hindsight a wonderful thing
PS: I think the original decision was to site all the equipment at one location, so one switch tech could look after it and never have to leave the site. That is however a redundant plan as there are now more switch sites than techs, I think they are losing another tech in South Wales now taking them down to three switch techs for the whole of South Wales.
(I can not guarantee my figures for 3 switch techs, but think it's the case)