Mark Carver wrote:
[snip]
>
>> I don't believe that's going to happen by 2025! There simply isn't
>> the manpower available to replace all the wires up posts.
>>
> 2025 is when PSTN is to be retired, many will still be connected via
> FTTC and therefore still using copper.
>
> I gather the date for all copper to be replaced is 2030 (ish ?)
So from 2025 to 2030 at least there will be VoIP connections relying on
ADSL (because you can't get FTTC in many areas) and FTTC. Both ADSL and
FTTC connections are just about tolerable for web browsing (although
filling in forms often doesn't work over slow ADSL) but they won't be
good enough for VoIP because any noise spike will cause the router/DSLAM
to re-synchronise and this takes about a minute. So there's a minute
when your VoIP connection is broken. Once the DSL connection re-syncs
and re-authenticates, your VoIP device then has to re-register with its
provider - several more seconds. This just doesn't happen with Voice
over Copper - it either works (possibly with the odd click) or fails
totally until repaired.
So the impression amongst the general public will be that VoIP just does
not work. They are therefore likely to ditch the landline voice service
completely and go to mobile, where they can at least see the signal
strength and estimate whether it's worth making the call. There's very
little chance that mobile operators will improve service for rural
communities (even where I am, a few miles from Thetford in Norfolk the
mobile only works outdoors, irrespective of Vodafone, EE, O2, Three, or
whoever). So I could use WiFi calling, but that will fail when the DSL
service re-syncs just as will VoIP.
There will be no point in moving domestic users to VoIP until they are
all served by FTTP. At present, there's no reason to suppose that FTTP
will be affected by nearby lightning strikes or other noise events (e.g.
electric fences as used by farmers) and my understanting of the
technology is that it is inherently more immune to such problems. But
by the time the installers have done their worst I fully expect the
domestic level service to be riddled with reliability problems arising
from inappropriate cost-saving measures.
--
Graham J