when using this betamax SMS callback via a roaming-SIM-card as e.g. globalsim there is one problem I was not able to solve until now:
They don't broadcast the phone-number when sending a SMS. Therefore I can't use my globalsim for triggering a SMS callback. Using another cell phone for sending a trigger SMS is also not possible because betamax only allows to register one phone number....
Is there any solution for handling this shortcoming?
Thanks,
kr A.