Patent ID: 7685293

Claim:
A method for supporting multiple session registrations of a data packet protocol for a user equipment assigned a unique device identifier, comprising: receiving a first session initiation protocol (SIP) registration request from a user equipment, the first SIP registration request comprising a first extended unique device identifier (EUDID), the first EUDID including a unique device identifier for the user equipment and a first one of a plurality of registration extensions; detecting the unique device identifier located in the first EUDID, authenticating that the user equipment is a subscriber based at least in part on the unique device identifier, and establishing a first packet data session for the user equipment; receiving a second SIP registration request from the user equipment, the second SIP registration request comprising a second EUDID including the unique device identifier and a second one of the plurality of registration extensions; and detecting the unique device identifier located in the second EUDID, authenticating that the user equipment is a subscriber based at least in part on the unique device identifier, and establishing a second packet data session for the user equipment.