Re: Remote diversion change

[Ext User(Michael)]

"John Henderson" <jhenRemoveThis@talk21.com> wrote in message
news:68g14nF2rkc60U1@mid.individual.net...
> Mouse wrote:
>
>> Hi ALL,
>>
>> Does anyone know if it is possible (by SMS'ing a GSM code type
>> arrangement) to change the diversion (forwarding) number on an
>> unattended mobile telephone. Do I have to have an application
>> on the phone to facilitate this? Any info/ideas would be
>> great.
>
> I seriously doubt it's possible, for security reasons alone.
>
> Another aspect is that the diversions are not held on the phone
> - they're part of your configuration data on the network
> itself. For that reason, you may have noticed that you can't
> change diversions when there's no coverage.
>
> Changing diversions using the phone's menu system attempts an
> immediate "supplementary services" data session with the
> network. So because networks have absolutely no requirement to
> modify diversion parameters on users handsets, I doubt that a
> specific GSM port number has been allocated to facilitate this.
> If it were possible, technical specification 3GPP 23.040 would
> provide the mechanism (section 9.2.3.24.3 or 9.2.3.24.4).
>
> John

And after all that jibber-jabber, the answer is: THIS FACILITY DOES NOT
EXIST IN AUSTRALIA
>
>

[Ext User(John Henderson)]

Michael wrote:

> And after all that jibber-jabber, the answer is: THIS FACILITY
> DOES NOT EXIST IN AUSTRALIA

I'm sure that's right, at least for the combination of phone and
network built-in features.

But the more I think about it, the more I suspect that such an
application /could/ be written for "smart" phones, like
Symbians.

And it could be secure too. Install a purpose-built application
onto the phone, and ask the phone user to configure a password.
Then the application would wait for a specially formatted SMS
with password and diversion details. This would see the phone
opening a supplementary services session (assuming support for
that in Symbian), and changing the diversions.

Maybe it's time I bought a Symbian phone and had a play with it.

John