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Re: powerd and Class 0 SMS

 

Yann is right, delivery receipts are also Class 0 messages, so you could
test them by sending a message from Ubuntu to either iPhone or Nokia one,
where both have delivery message/read receipt sending set.

What comes to the MMI responsibility and whether to save or when to save
the message, here's what ETSI sais:

"When a mobile terminated message is class 0 and the MS has the capability
of displaying short
messages, the MS shall display the message immediately and send an
acknowledgement to the SC when
the message has successfully reached the MS irrespective of whether there
is memory available in the
SIM or ME. The message shall not be automatically stored in the SIM or ME.
The ME may make provision through MMI for the user to selectively prevent
the message from being
displayed immediately.
If the ME is incapable of displaying short messages or if the immediate
display of the message has been
disabled through MMI then the ME shall treat the short message as though
there was no message class,
i.e. it will ignore bits 0 and 1 in the TP-DCS and normal rules for memory
capacity exceeded shall apply."

Source:
https://www.google.fi/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCkQFjAA&url=http%3A%2F%2Fwww.etsi.org%2Fdeliver%2Fetsi_gts%2F03%2F0338%2F05.00.00_60%2Fgsmts_0338v050000p.pdf&ei=eyawUZ5jxcngBJjMgeAO&usg=AFQjCNF2GJRCBtn9qNtG3a0vxkdu1wZvjw&bvm=bv.47534661,d.bGE


Cheers,
Zsombor



On Wed, Jun 5, 2013 at 10:49 PM, Yann Brelière <yannbreliere@xxxxxxxxx>wrote:

> Hi, I've read you can send flash SMS (class 0 SMS) with an app like
> "iPhone Delivery SMS" on a jailbroken iPhone, or ZeroSMS on an Android with
> CyanogenMod (http://stackoverflow.com/a/12873325/358532).
>
> About the interface, I've read somewhere that iphone's UI only displays
> it, without offering to save it in the SMS inbox, which has led to some
> phishing (as it displays like a native notification, with no clue that it's
> an SMS, and no way to know the sender). Sorry, it was in French (
> http://skyduino.wordpress.com/2012/08/16/sms-classe-0-un-bon-moyen-de-faire-peur-a-vos-amis/
> ).
>
> --
> Yann Dìnendal
> Le 5 juin 2013 21:22, "Matthew Fischer" <matthew.fischer@xxxxxxxxxxxxx> a
> écrit :
>
>> From the ofono documentation it looks like there is a separate signal
>> that we will get when a Class 0 SMS is received. We've added support for
>> this signal today (to turn the screen on when one is received), but I
>> cannot figure out how to generate one. I've tried several Android apps all
>> without success. I know it won't work on CDMA and  perhaps not at all in
>> the US? If anyone can send Class 0 SMS messages (sometimes called immediate
>> or flash SMSes), please either test it on your phone with the powerd that
>> lands tonight in saucy or email me and I can test it and you can send me
>> the SMS.
>>
>> Thanks
>>
>> --
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>>
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