×

Internet protocol for IP private branch exchanges

  • US 8,787,544 B2
  • Filed: 03/21/2013
  • Issued: 07/22/2014
  • Est. Priority Date: 03/05/2008
  • Status: Active Grant
First Claim
Patent Images

1. An Internet protocol query system for Internet protocol private branch exchanges, the system comprising:

  • a private branch exchange that is connected to the public switched telephone network that receives a call setup request, the private branch exchange comprising an internal name delivery database, the private branch exchange and the internal name delivery database being independent from and in communication with a carrier switch, the private branch exchange not being enabled to receive calling name delivery information from the carrier switch; and

    an external calling name delivery database, independent of the carrier switch and the private branch exchange, that receives calling name delivery queries from the private branch exchange based on the call setup request;

    wherein the private branch exchange is configured, in response to a determination that an incoming telephone number associated with the call setup request does not require calling name delivery information, to withhold sending calling name delivery queries to both the internal name delivery database and the external name delivery database.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×