[Asterisk-Users] Detecting when a called mobile is not reachable?

[David John Walsh]

This is traditional accross the mobile / cell providers, and there is
no real way around it.

Background : The only way to ensure that a mobile is truly there is to
page the mobile, normally based on the Mobile Switching Centre (MSC)
coverage area, and thats after looking up on the subscirbers HLR, its
a lot of signalling for a call not to connect, and a cost to the
operator.

With the rate that mobile operators charge the A party for the call,
they get a percentage of the call from the originating operator, so
they get cash as soon as it connects, and therefor its in their
interest to connect that call, even if its to an announcement shelf.

Its one of the reasons they invented voicemail!!!!

If there is a way around it, don't shout it too loudly

David

On Apr 3, 2005 8:56 PM, Ian Hailey <asterisk at dinplug.com> wrote:
> Hello all,
> 
> I was hoping to be able to call a mobile and if it is un-reachable for
> whatever reason (e.g. switched off) then I was expecting an unobtainable
> response that would be detected in Asterisk. It seems that the operator
> (Virgin in UK) imedately completes the call and plays an automated
> message before clearing the call. Does anyone know if there a way of
> avoiding the call completion for mobiles? I have noticed that Sipgate
> charge for a calls to an unavailable mobile regardless.
> 
> Thanks.
> 
> Ian.
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