Billing & Kannel SMS side

Hello,

 Is there any good reason why the kannel sms part does
not incorporate some kind of billing support? What I
have in mind is:
- Before a message is sent to the SMSC, a script is
run by bearerbox. If it returns zero, the message is
sent. This is for balance checking
- When the SMSC accepts the message, another command
is run. 
 Both commands would be specified in the SMSC group of
the conf file, and %P, %i, etc are allowed.

 Any thoughts? 

Thanks

Bruce


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