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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

IoD wants copper switch off date - DCMS fiber engineers offer to take them off the Internet



 
 
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  #11  
Old August 4th 18, 06:42 PM posted to uk.telecom.broadband
R. Mark Clayton[_2_]
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Posts: 485
Default IoD wants copper switch off date - DCMS fiber engineers offer totake them off the Internet

On Friday, 3 August 2018 15:16:56 UTC+1, NY wrote:
"Bob Eager" wrote in message
...
Whilst old phone wires corrode and the insulation breaks down, any wires
laid in the last forty to fifty years will be PVC covered and usable for
a century or more.


Unless they are laid in the open air where UV will break them down.


Is it the wires that are a problem or the joints between them, whether
underground, up a pole, or under water in a flooded junction box or the bed
of a stream.

Would the wires support a higher speed if they were twisted pair to cancel
out interference, as opposed to linear arrangement of wires with lots of
other pairs in the same bundle?

Copper is fine for moderate speed internet, as long as line lengths are kept
short. The problem is that there are far too many absurdly long lines which
need to be "shortened" by fibre to a closer point than the nearest exchange.

Fibre to each house, and 1 Gbps symmetrical, would be lovely. But not if it
costs both arms and both legs to afford it; a few tens of Mbps up and down
is enough (for the moment) for most purposes. As with so many things, people
will set their own cost versus performance limit and will not pay more for a
service that exceeds their needs.

Copper does have a very big advantage over fib you can send power over
it. So people do not need a UPS to retain their phone service in the event
of a power cut


indeed, although when I was a kid there was a big battery for the phone in our house (shared line?)

that takes out cordless phones and (after a fairly short
time) mobile phone masts - not sure how long they can run with no mains
supply.


It varies - a temporary BT EE one near us has no mains power and a part time generator at the base.

  #12  
Old August 4th 18, 06:48 PM posted to uk.telecom.broadband
R. Mark Clayton[_2_]
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Posts: 485
Default IoD wants copper switch off date - DCMS fiber engineers offer totake them off the Internet

On Friday, 3 August 2018 22:53:27 UTC+1, Vir Campestris wrote:
On 03/08/2018 15:16, NY wrote:
Would the wires support a higher speed if they were twisted pair to
cancel out interference, as opposed to linear arrangement of wires with
lots of other pairs in the same bundle?


I thought they were twisted pairs...

Andy


In the bigger cables they were, but only for identification - they used a system of colours (like resistors) and wires were solid colour or a main colour and a stripe, which if my maths is correct gave 100 different wire colourings and 450 pair combinations.
 




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