[asterisk-users] Wifi GSM handover

[Patrick]

Thank to Frank and Steve for your answers

My understanding is that you need to place on operator premise an
equipment that checks first the availability of the user on VoIP. If
not registered, it's routing the call through the cellular network.
Is it correct ?

But during the handover (wifi to GSM), how does it works ? Is it the
operator that initiates a call on the GSM network. If so, I guess the
mobile device need to have some logic to seamlessly switch between the
2 channels, isn't it ?
If it's the mobile device that initiates the call to the GSM network,
it will also require some logic to do that.

So my question is, is the handover something standard in every mobile
device supporting GSM and VoIP or do you require an extra piece of
software to do the trick ?
Is this principal applies to every "transport technology", I mean VoIP
through WIfi or VoIP over 3G ?

Thanks in advance
Patrick


On Sat, Oct 10, 2009 at 06:57, Frank Bulk <frnkblk at iname.com> wrote:
> There are two commercial vendors that come to mind, namely DiVitas and
> Agito.
>
> Frank
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Patrick
> Sent: Friday, October 09, 2009 8:15 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [asterisk-users] Wifi GSM handover
>
> Hello guys,
>
> I'm wondering what is required and involved in order to provide a
> wifi/GSM handover to customers.
> After googling I haven't found any product/vendor. Do you have an idea ?
>
> Thanks in advance
> Patrick
>
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