scope:

This Recommendation describes the realization of the SMS spam filtering system based on userspecified rules (hereafter referred to as the SMS spam filtering system or the filtering system). It defines:

• the structure of the filtering system

• the SMS spam filtering functions

• users' service management

• communication protocols

• functional requirements of the terminal

This Recommendation is suitable for the design, deployment and evaluation of SMS spam filtering system based on user-specified rules in mobile networks and fixed networks.

NOTE - Some filtering mechanisms described in this Recommendation may affect the privacy of telecommunication traffic. Therefore, implementations of SMS spam filtering systems have to take care to be in alignment with the applicable legislations. This Recommendation or parts of it may not be applicable in Germany due to German legislation.