> Then there should be some kind of (HTTP?) frontend to SS7 that > allows just this kind of queries. I don't think that this would > violate privacy because it only provides the same kind of > information one could previously get from looking at the MSISDN.
that would be ok. another way - I believe that there should be some general solution in kannel for such cases. what would smsc respond with if somebody is trying to send a message to a MSISDN which does not belong to this operator? reply with something like 'invalid MSISDN' or smth. well, having something in configuration like 'next-smsc' to provide smsc to try to send to, if something like that should happen, could solve the problem. k
