B.2 VLR Security Function

12.033GPPSecurity ManagementTS

B.2.1 Authentication Vectors Unavailable

A. This counter counts the unsuccessful authentications due to no authentication vectors available at the VLR (neither locally nor from the AuC).

B. CC

C. Internal function of the VLR: inability to perform authentication because no authentication vectors are available (neither locally nor from the AuC) and thus authentication is not possible

D. authVectorsUnavailable

E. A single integer value

F. VLR Security Measurement Function

B.2.2 Subscriber unknown in HLR(VLR)

A. This measurement counts the number of times a request for subscriber data from the HLR is unsuccessful because the subscriber is unknown in the HLR.

B. CC

C. Receipt of a MAP_UPDATE_LOCATION service confirmation with a "user error " parameter equal to "Unknown Subscriber"

D. subsUnknownInHLRFromVlr

E. A single integer value

F. VLR Security Measurement FunctionLR Security Measurement Function