A method and apparatus for mobile communication in multiple mobile communications networks. Embodiments include installing a SIM that includes at least one IMSI and at least one MSISDN in a mobile communications device. The SIM is used to receive and place calls while the user is in the user's home network...http://www.google.fr/patents/US7505769?utm_source=gb-gplus-shareBrevet US7505769 - Signaling gateway with multiple IMSI with multiple MSISDN (MIMM) service in a single SIM for multiple roaming partners
Signaling gateway with multiple IMSI with multiple MSISDN (MIMM) service in ...
