A communication network includes an SS7 Security Gatekeeper that authenticates and validates network control messages within, transiting, entering and leaving an overlying control fabric such as an SS7 network. The SS7 Security Gatekeeper incorporates several levels of checks to ensure that messages...http://www.google.fr/patents/US7224686?utm_source=gb-gplus-shareBrevet US7224686 - Method of and apparatus for mediating common channel signaling messages between networks using a pseudo-switch
Method of and apparatus for mediating common channel signaling messages ...