hmmm quite a few things that dont ring true.
BT should never have implemented ECI cabs
BT have ALWAYS used at least 2 suppliers of systems for their kit going back to the year dot. The Huaweis fell a bit out of favour in 2012 when there was some big scare or other about spyware (USA refused to use them) and hence most cabs installed in 2013 were ECI's.
but they are cheap and save BT money
I'm pretty certain that I read something years ago that the ECI DSLAMs were more expensive out of the brands!
This was back in the days before any talk of vectoring or G.INP - which is when it began to fall out of favour in certain communities. Believe it or not ECI and the Lantiq chip was supposedly cutting edge and ECI were the pioneers when it came to some technologies. Just a shame that BT chose the M41 rather than the V41. ECI cabs are I believe used by several other countries, yet its only really in the UK that you seem to hear people moaning about them.
and look better than the larger Huawei cabs.
Ummm... Wasnt it more to do with supply & demand and no of premises passed as to which type of cab was used?
Thats rubbish because there are several thousand Huawei MA5616T cabs installed in the UK which is of similar size to the ECI. No way is a centimetre or two going to make any difference to a passer by.
poor ventilation.
As b*cat has already pointed out, the ECI's have more vents than the similar sized Huawei cabs. They were supposedly too well ventilated and suffered with condensation. Heat pads had to be installed in them for use when the temperatures dropped.
They’ll automatically turn on when the ambient temperature within the DSLAM reaches less than 10 degrees Celsius. The heat will make sure that the temperature doesn’t drop too low and will prevent the electronics from degrading due to condensation. -
link heat as effected the DSLAM
Over heating would cause shutdown, the temp in the cabs are monitored. Any degraded components would be replaced. Im with ejs the only way would be to cut back power for all lines, and Im not sure if this would actually help. Would this also have an effect on such things as PBO and PSD masks?
Also Im quite sure some of the more observant on MDWS would notice if this was happening with their eci cab.
DLM is holding you at 50Mbs band
I dont know the line, but far more likely:-
1) Any suddenly speed loss would likely be attributable to cross-talk. Ive so far 'lost' 32/33 Mbps to cross-talk.
2) Could have a 'stuck cap' which we have seen across all types of cab
Seems a tad far-fetched.
Just a bit!