In reply to a post by eckiedoo:

If such an FTTC Cabinet is erected outside the Exchange; are the required links (as in FTTC Cabinet to normal PCP) run back in to the Exchange, to connect up the individual subscriber lines and filters?

If that is the case, then it would appear that only lengthy EO lines might not benefit.

I'm not quite sure exactly what you are asking. Basically what happens is they out a PCP outside the exchange and route the EO lines through it, then the fibre cabinet goes next to it and connects to the PCP in the normal way using copper tie pairs.

Thanks Icaras.

What you have described, the existing EO Cables have to be intercepted somehow; and wired up to a PCP, with new, normal Voice Links back in to the Exchange to complete the basic Phone/Voice circuits conventionally.

Then the FTTC Cabinet is erected "alongside" and the VDSL Links put in from the FTTC Cabinet to the (new) PCP Cabinet.

That seems like an awful lot of work; and some lengthier EO lines possibly having to go through the process, because of being in the same cable, whether or not the Subscriber/Customer wants Broadband or those on longer Line Lengths would benefit.

===============

To me it seems simpler if the FTTC is placed somewhere around the Exchange building, inside or out does not matter, as long as the distance is not too great, say 50 metres maximum.

Then the VDSL Links would be taken in to the Exchange if the new FTTC is outside; otherwise "across" the Exchange to the panel/s that the EO lines terminate at, more like ADSL.

That would save the cost of the PCP, split wiring work, long interruption to service etc.

The design of the telephone exchanges limits things slightly. Also the fact that they can't put the VDSL2 DSLAMs in the exchange due to interference. So the fibre cabinet for EO lines needs to be outside the exchange.

However it is certainly possible to have tie pairs leaving the frame (he last point in the exchange before the lines go outside) with termination blocks on the frame, going to the fibre cabinet outside and then returning on some other termination blocks in the exchange. You'd then just need to run jumper wires from these blocks to the line before it leaves the exchange.

However it's just simpler to put a copper PCP outside the exchange and divert all of the EO lines into it. Contractors can't work inside exchanges so using the method I described above a contractor couldn't do the job. Adding new tie pairs would also be a lot harder also, and some frames are really short of space and congested. It's just easier having everything outside.

Thanks, Icarus.

That clearly explains why OR follow what otherwise seemed to be the costlier choice.