[AusNOG] Number portability, lost calls, NBN, etc.

[Jay Dixon]

Hi Ross,
 Not exactly the same but slightly similar - i just did an ISDN to SIP
migration with Telstra and at various points in time it's possible to route
specific numbers differently on the 2 different "networks" - eg: for
testing we enabled one of our numbers on the TIPT(SIP) platform, so
whenever anyone who was on the Telstra TIPT platform dialed the number, it
would keep the number routed locally on the TIPT platform and would work
for our test service, but if you called from anywhere else it would come in
through the ISDN as normal.

It sounds like something similar is happening with you - presumably it
sounds like the NBN is managing the last-mile to the services in that given
local area, so while anyone outside that local area is coming in through
AAPT or Telstra's links, calls from within the local area aren't being let
off the local NBN (POI?) network, and are trying to be routed locally.

with any luck, given they've fixed it for "one" customer, it should
hopefully have an effect on the rest of the local area too...

hopefully that's of some use... you're not going crazy :)

cheers,
 -Jay


On Thu, Apr 20, 2017 at 2:58 PM, Ross Wheeler <ausnog at rossw.net> wrote:

>
> Some of you may remember my call for help here a couple of weeks ago with
> a customers number ported from hel$tra to aapt (pan, fire, jump).
>
> Thank you to the many who on and offlist gave me pointers, or at least
> shared experiences of the problem, and frustration over the difficulty of
> resolving it.
>
> I'm penning this note perhaps to spark discussion or thoughts on
> resolution of what appears to be a new and hitherto unrecognised problem.
>
> Up until an hour ago (and possibly still an issue), my customer been
> getting calls from most places EXCEPT a non-trivial number of callers local
> to them. Given they are a specialist emergency medical service, the bulk of
> "important" calls ARE local to them, so these are the most critical calls -
> they seriously ARE a matter of life or death.
>
> So after 2 weeks, they are still NOT getting an unknown number of calls
> originating locally. AAPT wanted my call logs showing the failure and
> didn't seem to grasp that I couldn't give them logs for calls we were not
> receiving! I suspect they've still not lodged the problem with telstra.
>
> The customer recently got told (by telstra) that all the digital numbers
> were handed over to nbn, and that nbn still "had" their number in "their"
> system, and that it "could not be removed until the account was closed".
> This is an account with nbn that the customer didn't know existed, didn't
> create, didn't authorise and has never seen!
>
> Hypothesis: some of the OTHER people in this customers area have also been
> moved onto an nbn service - including their phones. Calls originating
> within "nbn" (presumably the nbn-department-of-telstra) are finding my
> customers number in the "nbn" system and routing the call directly there,
> completely bypassing the global number database.
>
> The customer just called me, and had been on the phone with someone from
> "the nbn" - they confirmed that they still had "the number", but said that
> they wouldn't close the account until it had been paid! (Seems it has never
> been paid since it was created in 2015). Threats were made, the operator
> finally "deleted" the number. Customer got one of the known problem-callers
> to try dialing again and presto... the call came through! So it seems to
> some extent anyway, that the "nbn hijacked our number" story has some
> element of truth.
>
> Surely this breaks huge chunks of the infrastructure designed specifically
> to permit calls to be ported around between different providers and
> infrastructure? Or is there some presumption that once a number goes into
> "the nbn" it'll remain there forever more?
>
> Fingers crossed that this particular customer is now sorted, but how many
> more are potential disasters waiting to happen??
>
> Or has a small amount of fact been mis-quoted and/or mis-interpreted by
> agents of helstra, nbn, aapt and my customer, and made into some story that
> bears little relation to fact?
>
> R.
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