I'm waiting for Torcross to be upgraded, which should be in a few weeks while they lay the fibre from Kingsbridge to Slapton.
But what specifically do they do in the exchange to enable it for fibre? Entirely new equipment/servers to receive/relay the fibre signal? Is it a huge job, or quite quick and straightforward? Never been inside an exchange and always wanted to see what (especially nowadays) is contained inside, so it would be great to know how quick or drawn-out this process is.
Whats usually in the exchange:
Lots of cables,
LLU Handover Frames,
As for FTTC equipment it depends if the exchange is the one all of the cabinets are connected to. If it is then it can vary a lot.
When enabling FTTC in an exchange, it has to first be upgraded to 21CN to handle the Ethernet backhaul to the new 21CN network which FTTC runs on. This consists of usually ripping out the old equipment (Routers & Switches) and replacing them with equipment which can handle Ethernet. You also have to do this on the other end of the backhaul.
They then more or less install new separate
switches which all of the cabinet backhauls connect to. It is these switches where some LLU providers connect their equipment to so their customer traffic can be handed over to them from BTo and also where it joins the BTw backhaul.
This is a rough idea because every exchange is different.
If the cabinets do not connect to an exchange (Maybe it's too small or there's a large one nearby) then it may just be used to house a fibre splitter or may not have one at all and completely get bypassed.
Most of the waiting is for contract work to be done. In many of the older exchange buildings due to lack of ventilation, BTw/BTo will have to install metal louvers and new cooling equipment; the former requires planning permission. I know ours did even before 21CN (ADSL2+) was installed despite only having ~1300 lines.
So yes it is quite a big job depending on how many cabinets are served and how old the building is.
Telewest (2004-2006): 256Kbps -> 512Kbps
University of Portsmouth's Horrible Network (2013 - 2014) - Supposedly 100/100Mbps
BT (2006 - Present): 8128/448 -> 22494/1211 -> 79987/20000Kbps (BT Infinity 2 on Huawei Cab)
Edited by chris6273 (Sat 16-Aug-14 09:23:47)