US Patent 7979066 Multiple IMSI connections

A system is disclosed that includes a first multiple International Mobile Subscriber Identity (IMSI) location register (MILR) module. The first MILR module includes user information associated with a plurality of mobile subscribers. For each of the mobile subscribers, the user information includes a first IMSI number and a first Mobile Directory Number (MDN). The first IMSI number and the first MDN are associated with a first country. The user information includes a second IMSI number and a second MDN. The second IMSI number and the second MDN are associated with a second country. The user information also includes active location information for each of the mobile subscribers.