[Tagging] Feature Proposal - RFC - Telecom local netwoks

Warin 61sundowner at gmail.com
Tue Jun 12 09:52:18 UTC 2018

On 12/06/18 19:26, Paul Allen wrote:
> On Mon, Jun 11, 2018 at 11:51 PM, François Lacombe 
> <fl.infosreseaux at gmail.com <mailto:fl.infosreseaux at gmail.com>> wrote:
>     Could someone confirm that point to point or GPON fibre networks
>     are connected to a telephone exchange building too?
> I think that's a reasonable assumption that will rarely be incorrect.  
> Fibre was first used to replace many copper lines
> between telephone exchanges and all else has been built upon from 
> that.  First with ADSL where the DSLAMs were
> in the exchange.  Later with FTTC and FTTP where the exchange was the 
> star point for tunnels/hubs/poles.  Note
> for technical purists: that was a gross oversimplification.
>     Can we call a fibre dedicated building a telephone exchange also ?
> A good question.  And the answer is, it depends.
> LINX (London Internet Exchange) is an example of a fibre-dedicated 
> building that isn't about voice (although
> VoIP may pass through it as just one component of all the traffic).  I 
> wouldn't call it a telephone exchange.
> OTOH, BT/Openreach plans to switch all POTS over to VoIP over 
> FTTC/FTTP.  When that happens the old
> telephone exchanges will be fibre dedicated, but they will still be 
> telephone exchanges.
> It's possible telcos have buildings that are star points for fibre 
> trunks with no local loops.  I wouldn't call those
> telephone exchanges.  Depending on the packet protocols they may not 
> even be internet exchanges.
> My feeling on this is that if it has local loops (or the FTTC/FTTP 
> equivalent) it's a telephone exchange; if it
> doesn't have them it's not.

What about calling them an 'exchange' ... though it could be confused 
with money - foreign currency trading etc.
  So umm 'communication exchange' ?
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