we need to intercept SMS based on sender address - like a blacklist of phone numbers. You could use this to implement a SMS spam filter. I know you can use a RSocket with SetTextMatch() to filter SMS based on a prefix. Is this also possible based on sender address? I noticed ReceiveMessage in ETEL MM? It looks easy to inspect the sender address, but I do not understand how to forward the SMS to higher software layers once it is received in ReceiveMessage().