Patent ID: 9692903
Date: 2017-06-27
CPC Classifications: H04L,H04M,H04W

Claim:
1. A method for transferring a call established by a first client to second client, the method comprising: establishing a call via a first client; sending a setup message from the second client on a user element to initiate transfer of the call from the first client to the second client; receiving the setup message at a continuity control function (CCF) which is currently anchoring the call; in response to receiving the setup message, sending a message including an identity of the CCF to a media gateway controller; at the media gateway controller, initiating an invite message to a serving call session control function (S-CSCF) including the identity of the CCF and identifying the media gateway controller as a representative of the user element in a domain for the call; and at the S-CSCF, forwarding the invite message to the CCF, and, at the CCF, sending an update to a remote endpoint to effect a transfer of the call to the second client.