On 05/07/16 17:32, Holger Freyther wrote:
> sure. Can you extract that USSD query dialogue in a pcap file for us? The 
> "expire timer stopped" is related to periodic LUs[1] and most likely not 
> linked to anything you are seeing.
>
> I don't know the SS codes by heart but your phone most likely queries for 
> something like call barring, forwarding state and waits for an answer and we 
> are happy to keep the channel open. Which means the "invokeId" is blocked in 
> the phone.. which most likely means it will not try to use a different 
> invokeId for the next call.
Great, here are two pcap files.
krzr.pcap is the motorola KRZR K3 as I switch aeroplane mode off and
then on again. - You see interrogate SS right after the attach.

Nokia.cap is sending *#21# on a nokia 6070, following by powering off as
it sits at the requesting.... screen
>
> The right way is to reject it. But once we have the PCAP file we can see 
> which message to reject (or returnResultLast to).
:-) Looking forward to seeing how this is done, after all the code
analysis I did today, it'll be very rewarding!

thanks,
k/

Attachment: krzr.pcap
Description: application/vnd.tcpdump.pcap

Attachment: nokia.pcap
Description: application/vnd.tcpdump.pcap

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