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Establishing a communication event

  • US 10,089,603 B2
  • Filed: 09/12/2012
  • Issued: 10/02/2018
  • Est. Priority Date: 09/12/2012
  • Status: Active Grant
First Claim
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1. A method of establishing a communication event between an initiator and a recipient over a network in a first communication system having a first contact list, the method comprising:

  • associating, for the initiator, a first user identity for the initiator in the first communication system and a second user identity for the initiator in a second communication system;

    accessing, via the network, contact details within a data store of a server of the second communication system, the contact details comprising an association of a first user identity for the recipient in the first communication system and a second user identity for the recipient in the second communication system to establish the second user identity of the initiator as a trusted contact of the second user identity of the recipient, the second user identity of the initiator being-in a second contact list of the second communication system;

    determining, from the accessed contact details, the second user identity of the recipient in the second communication system, the second identity of the recipient not being in the first contact list;

    determining the first user identity of the recipient in the first communication system from the determined second user identity of the recipient in the second communication system and the association of the first and second user identities of the recipient in the first and second communication systems;

    proving the first user identity of the initiator in the first communication system to the recipient by sending, to the second communication system over the network, a certificate issued by a server in the first communication system, the certificate including the second user identity of the initiator in the second communication system, the second user identity of the initiator being in the second contact list to indicate that the initiator is a contact of the recipient in the second communication system;

    obtaining a token from the first communication system; and

    sending a setup request, over the network, from the initiator to the recipient to establish the communication event over the first communication system, the setup request being sent using the determined first identity of the recipient in the first communication system and including the token, the communication event authorized to proceed over the first communication system based on the association of the first and second user identities of the initiator in the second communication systems and on the second user identity of the initiator being in the second contact list.

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