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System and method for supporting voice call continuity for VOIP emergency calls

  • US 8,340,626 B2
  • Filed: 04/25/2007
  • Issued: 12/25/2012
  • Est. Priority Date: 04/28/2006
  • Status: Expired due to Fees
First Claim
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1. An apparatus for supporting Voice Call Continuity (VCC) for emergency calls in a wireless access environment, comprising:

  • a receiver for receiving a request for an emergency call via a radio link from a User Equipment (UE) at a node in a visited network, wherein the emergency call is destined for a Public Safety Answering Point (PSAP);

    a component of the visited network for establishing the emergency call by having support for location anchored in the visited networka VCC application in the visited network for routing the emergency call and for moving the emergency call from one to the other of a circuit switched domain and a packet switched domain,wherein the visited network provides continuing support for location.

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