[asterisk-biz] Mobile extensions from Asterisk - HLR registration?

[David Burgess]

Good points.  Fully agreed on the likely hostility of conventional  
GSM carriers to this idea.  The preferred approach would be to be a  
subscriber of the "hybrid" carrier, SP-A, and then roam into SP-B's  
service when needed.  This would be more likely to fly with SP-B as a  
business model.

Also, agreed that it is important that your devices not send in too  
many registration requests from different VLRs too quickly, since  
that is likely to trigger some kind of fraud detection.  The GSM  
design assumes that one IMSI is assigned to one device, and if you  
appear to be in two places at once, an alert operator will notice and  
take action.  Again, if your HLR is operated by SP-A, they will have  
a different notion of "normal" registration behavior and there is  
less likely to be a problem.



On May 20, 2009, at 9:48 AM, Trixter aka Bret McDanel wrote:

>
> As for registering the roaming stuff, that becomes more difficult, you
> have to have SS7 connectivity with a SS7 stack with the MAP  
> extensions.
> You also have to have a roaming agreement and honestly there is no
> incentive for the mobile carriers to allow this, so its a hard  
> sell.  It
> also screws up their fraud detection algorithms in that you have
> multiple phones registered on the same account, sure they could change
> this, but why change it to allow competition? Its easier to do it the
> other way around, which is what truphone does.
>

David A. Burgess

OpenBTS on the web:
http://www.kestrelsp.com/OpenBTS
http://openbts.blogspot.com
http://www.gnuradio.org/trac/wiki/OpenBTS