Patent ID: 7577431

Claim:
A method for supporting Mobile Subscriber Integrated Service Digital Network (MSISDN) numbers in an inbound roaming mobile device, comprising: registering the mobile device in a Foreign Public Mobile Network (FPMN) in which the mobile device is roaming, the mobile device having a single International Mobile Subscriber Identity in a Home Public Mobile Network (HPMN) (IMSI-H); the FPMN accepting the registration of the mobile device; the FPMN sending messages to a signal gateway SG; upon the SG determining that the mobile device is a subscriber to a temporary local number service, modifying a calling Global Title (GT) to the SG; relaying a registration message to the FPMN with the modified GT; and the FPMN mapping a local MSISDN for use of the roaming mobile device; wherein communications of the roaming mobile device using the local MSISDN are routed by the SG using the single IMSI-H, wherein the HPMN has a Home Location Register (HLR) including a single HLR profile corresponding to the IMSI-H, wherein the local MSISDN and at least one other MSISDN for use by the roaming mobile device correspond to the single HLR profile, wherein the FPMN belongs to a network operator different from that of the HPMN, and wherein the HPMN and the FPMN have a roaming agreement.