Lucent Technologies Inc.

Alcatel Lucent

Shehryar S Qutub

Yigang Cai

Alok Sharma

Gyan Shanker

In a telecommunications network, method and apparatus for blocking unwanted messages (spam). Messages are first examined by a fast process which uses rules and data tables to determine whether a message can be passed or is potentially a spam message. If the message is potentially a spam message, the message content is analyzed by a deep process. Advantageously, most messages can be passed or blocked quickly and extensive data processing is required only for the few messages which cannot be categorized by the fast process.

Detection of unwanted messages (spam)

This invention relates to a method and apparatus for blocking spam messages originated in a different network. An anti-spam check is made in response to an initial Send Routing Information (SRI) message received in a destination network of a message. The result of this check is sent back to the originating network along with a destination address of a switch in the destination network, and SRI spam code and Mobile Terminated (MT) Routing Address Correlation ID. If SRI spam code indicates a spam, then subsequent transmission of the MT message with the same Correlation ID is blocked in the interworking switch or SMSC.

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Hoffman Estates, IL, United States of America

Shehryar S Qutub