[LINK] FTTN architecture

David Lochrin dlochrin at d2.net.au
Fri Feb 5 12:08:30 AEDT 2016


On 2016-02-04 12:36 Paul Brooks wrote:

> As above - ACMA maintains the directory mapping telephone number to provider/network.  Its up to each provider to work out the rest of how to direct an incoming call to make their own customer's handset ring, whether its on NBN, copper, fibre, wireless, or wet string.

(I was assuming the ISP was also providing VoIP services and conflating the two was confusing, at least for me :-)

>From the view of the calling party's VoIP RSP, however, when a SIP call-setup request is received from a subscriber the only information identifying the called party is their telephone number.  I presume this must then be associated with the IP address & port being used by the called party's VoIP RSP (possibly the called party themselves) so the call can be routed.

The ACMA database at https://www.thenumberingsystem.com.au/#/number-register/search which you mentioned doesn't currently do this, though it could no doubt be extended.  But downloading a file which may be frequently updated seems a little clumsy, and the data would have to be fairly stable.  A central database which can be queried on the fly like the DNS system might be a better solution.

David L.




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