Phasing out of telco TDM Backbones (was: Phasing out of copper)

[mansaxel at besserwisser.org (Måns Nilsson)]

Subject: Phasing out of telco TDM Backbones (was: Phasing out of copper) Date: Sun, Nov 30, 2014 at 12:09:40AM -0500 Quoting Jay Ashworth (jra at baylink.com):
> ----- Original Message -----
> > From: "MÃ¥ns Nilsson" <mansaxel at besserwisser.org>
> 
> > Maintaining copper plant is expensive. It will be retired as soon as
> > buy-in on FTTH is high enough. Telia Sonera is doing it in Sweden,
> > so the trend is global. (OTOH, in Sweden, young people moving out from
> > their parents, if they can find somewhere to rent, usually only get a
> > fixed connection for Internet access. Telephony is all mobile.)
> 
> Absolutely: maintaining analog copper last-mile is expensive.
> 
> But let us not conflate being ok with telcos replacing analog copper last-mile
> with being ok with telcos replacing PCM with VoIP, especially in trunking
> applications, and *especially* using non-dedicated backbones, as these are the
> directions the RBOCs appear to be going in, and those are much less acceptable
> ideas than the former.

Sadly enough, those man-centuries need to be reread in the light of the
fact that today, you can not buy most of those connections anymore. Voice
circuits are almost entirely trunked on IP; and the telcos fight to
decommission the carrier formats.