On Wednesday, 10 January 2018 9:57:35 AM AEDT Paul Brooks wrote:
> Feel free to ping me off-list if you'd like to delve in to this deeper, and
> who your gaining provider is.
Thanks... This is an area which doesn't get much exposure amid all the sound &
fury of NBN implementation. But it seems important because "porting" papers
over a fundamental issue with network addressing: traditional POTS addressing
is a bit irrelevant in a VoIP-based network (as ACMA have stated in a strategy
paper), especially one with so many providers and a volatile customer base.
So I thought it might also be of general interest on Link.
> Local Number Portability isn't a true 100% multiparty thing unfortunately, so
> there can be holes. I might be a few years out of date now, but it used to
> work that a new carrier who wants to receive ported numbers has to execute a
> separate porting agreement with each other carrier it wants to receive
> numbers from, [...]
I see, I'd assumed the mandatory requirement to publish a PLNR ("Ported Local
Number Register") file was intended to allow all carriers to route calls
directly to the carrier currently holding a ported number without going through
the donor carrier. But the whole idea might be suffering scability problems
now.
> Is the new provider a true carrier with a proper 4-digit carrier access code
> (CAC)? Perhaps they have contracted Telstra to perform the portability
> functions on their behalf. Telstra can't 'hang on to the number' if it is
> requested to be ported by a carrier with a porting agreement, [...]
My current ISP isn't a carrier, and I suspect their service-provider may be
Primus Telecommunications which isn't marked 'LNP' at
http://commsalliance.com.au/Documents/Industry-Lists/EPID So I suppose it's
quite likely one or the other have contracted Telstra to forward calls.
Unfortunately the ISP's help-desk person, who seems technically quite
knowledgeable, doesn't know much about what happens on the far side of their
VoIP server. But the good news is that their ported-number charge is
apparently now $5.50 p.m., not $10 as I reported!
The other problem I haven't found a precise definition of the meaning of the
'LNP' flag in the EPID. Do you know off the top of your head?
Regards,
David L.
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