Patent ID: 8037297

Claim:
A telecommunication network system having at least a gateway node, with a first domain comprising: a mobile application part protocol instance connected to the gateway node configured to send and receive mobile application part messages in accordance with the 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 3&200, the gateway node being connected to a second domain, wherein the gateway node is configured to receive a mobile application part message from the first domain, to convert the received mobile application part message obtaining a secured mobile application part message, and to: send the obtained message to the second domain, the gateway node further being configured to receive a secured mobile application part message from the second domain, to extract an unsecured mobile application part message from the received secured mobile application part message and to send the extracted message to the first domain, where a secured mobile application part message is obtained by security mechanisms comprising one or more of data encryption and data integrity protection applied toward a particular domain.