Scott P. Zimmerman, PLLC
Methods, systems, devices and products for authentication
A communication device having a controller transmits to a communication system a PKI certificate. Encrypted communications may commence responsive to receiving a public key. The communication system can have a plurality of network elements that integrate operations of a circuit-switched communication network and a packet-switched communication network.
AT&T INTELLECTUAL PROPERTY I, L.P.
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David Feng-Lin Loraine Tho Peter Israel
Chen Beyer Tran Rosencrantz