[LINK] Ported telephone numbers

Paul Brooks pbrooks at layer10.com.au
Mon Jan 8 21:58:03 AEDT 2018


See http://commsalliance.com.au/Documents/Publications-by-Topic/LNP
In particular G520 listed at the end. 
(Dont worry about the IT spec documents)



-------- Original Message --------
From: David <dlochrin at key.net.au>
Sent: 8 January 2018 9:57:43 am AEDT
To: Link <link at anu.edu.au>
Subject: [LINK] Ported telephone numbers

I've been trying to understand the process involved in porting telephone numbers following a problem while porting mine to the NBN.  The number is in a range allocated to Telstra but the VoIP service is provided by my ISP, which is not Telstra and I believe doesn't have a carrier licence.

It seems each carrier publishes a PLNR ("Ported Local Number Register") file every day or so.  This file lists numbers allocated to the carrier which have been ported to another (specified) carrier.

https://www.thenumberingsystem.com.au/#/number-register/search displays the current status of a number.  For example 1300-300056 is listed as allocated to Telstra but currently held by Primus.  However my number is still shown as allocated to Telstra and currently held by Telstra, and I'm told only "business" and "special" numbers (13x, 1300x, etc.) are shown there.

Can any Linker shed light on how know how calls are routed to a ported number?  Ported numbers must now be occurring on a large scale given the NBN, and call routing would have to be efficient.

David L.

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