1. A method for filtration of unwanted wireless telecommunications comprising the steps of: monitoring traffic associated with roaming subscribers, said traffic carried via inter-network Internet Protocol links; intercepting a send-routing-information message from an originating node within said traffic; initiating a response to said originating node so as to direct said originating node to send a short message service (SMS) or Multimedia Messaging Service (MMS) associated with said send-routing-information message to an SPAM-filter via an SMS or MMS delivery message; receiving said SMS or MMS at said SPAM-filter; determining, at said SPAM-filter, whether said SMS or MMS constitutes an unwanted message; and invoking an action for managing said SMS based on results of said determining step.