ITU-T Recommendations

The detection mechanisms for duplicate unique identifiers (UIDs) discussed in Recommendation ITU-T Q.5052 are based on post-processing mobile network data to identify devices for blocking purposes based on criteria defined by individual national regulatory bodies. Through incorporation of one or more of these mechanisms, systems can identify and address the problems that duplicate or cloned devices present to governments, operators and consumers. A combination of one or more methodologies described in Recommendation ITU-T Q.5052 can be employed at any given time. The decision regarding the methodology or methodologies to employ will determine the level of effectiveness of a country's detection mechanism. The presence and detection of duplicate UIDs on mobile networks and identification of the authenticity of a device are two key problems to which stakeholders are looking to find solutions.