Re: long messages

On 19.08.2006, at 22:12, Stipe Tolj wrote:

> Denis V. Gudtsov wrote:
>
>> I'm using kannel 1.4.0 to connect to SMSCs by SMPP v3.4. My  
>> operator uses
>> optional parameters sar_* for a long message indication. How i can  
>> pass this parametrs to my script? Without this i have to send 2  
>> sms messages back to sender in a reply to one long his message.
>> Is is possible to extract this fields from original messages and  
>> pass it to my application? Or maybe can kannel assemble this  
>> messages to one and push it to me?
>
> there is no such way to "extract" the SMPP specific optional  
> parameters for the upside application layer. Kannel tries to  
> capsulate as much abstraction to all supported SMSC protocols as  
> possible. This is "known" and it's still a discussion thing about  
> how we can get the maximum set of features supported for SMPP, even  
> MO side.
>
> Kannel does neither assemble MO concat messages. This hsa been a  
> feature request some time ago, but none has offered a patch for this.
>
> @developers:
> If someone is interested in getting his/her (actually did we ever  
> had a female sending patches? :/) I have a version fron Netikos  
> (Kalle Marjola) that does MO concating. This could be used as  
> scratch for getting it into CVS version. Obviously Kalles version  
> is out of cvs sync.
>
> Kannel does MT concat splitting. Obviously the point is that you  
> need to get the MO concat transported to your application, right?
>
> @others:
> BTW, how are things with MOs if unicode is used? SMSCs obviously  
> split then 160 char messages to 2 concat MOs, right? So this means  
> we "don't support" unicode MO messages, right?


Unicode or plaintext or binary SMS makes no difference in SMS  
splitting. The answer is simply that on unicode, you can only pack 70  
unicode symbols into one SMS. Above that, you will get multiple SMS  
being sent from the handset. The limit is simply smaller because  
every character in unicode uses 16 bits whereas in default GSM its  
only 7 bits. Splitting and Reassembly work exactly the same way, if  
its unicode, just text or even binary SMS.





Andreas Fink
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