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Signaling gateway with multiple IMSI with multiple MSISDN (MIMM) service in a single SIM for multiple roaming partners

  • US 20050070278A1
  • Filed: 08/13/2004
  • Published: 03/31/2005
  • Est. Priority Date: 08/13/2003
  • Status: Active Grant
First Claim
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1. A method for mobile communication in multiple mobile communications networks, the method comprising:

  • installing a subscriber identity module (SIM) in a mobile communications device, wherein the SIM includes at least one international mobile subscriber identity (IMSI) and at least one mobile subscriber integrated services digital network number (MSISDN); and

    facilitating calls received by the user and calls placed by the user using the SIM while in the user'"'"'s home network and while roaming in another network, and further using one of a home MSISDN and a local MSISDN.

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