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Presence-aware private branch exchange (PBX)

  • US 20030215080A1
  • Filed: 05/12/2003
  • Published: 11/20/2003
  • Est. Priority Date: 05/17/2002
  • Status: Abandoned Application
First Claim
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1. A presence aware communications system comprising:

  • a first device;

    a second device; and

    a third device operative between the first device and the second device, wherein the first device transmits to the third device a first subscription request for establishing presence, the third device receiving the first subscription request and, in response, translating the first subscription request, and generating and routing a second subscription request to the second device based upon retrieved information in the first subscription request.

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