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System and method of providing IMS services to users on terminating non IMS devices

  • US 8,767,717 B2
  • Filed: 06/25/2013
  • Issued: 07/01/2014
  • Est. Priority Date: 01/24/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • registering a public user identity for a terminating non-internet protocol device with a first network device in an internet protocol subsystem;

    establishing an E.164 routing address associated with the terminating non-internet protocol device as a final destination of sessions to the public user identity;

    establishing an internet protocol address of a second network device, wherein the second network device establishes a telephone number, distinct from the E.164 routing address, as an immediate destination for a session; and

    routing internet protocol subsystem services to the terminating non-internet protocol device using a relationship between the public user identity, the E.164 routing address, and the internet protocol address of the second network device.

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