US 11,991,579 B2
System, method and computer-readable medium for provisioning dual-homed voice call continuity
Andrew Silver, Frisco, TX (US); Steven E. Tryon, Plano, TX (US); Patricia A. Landgren, Plano, TX (US); and Lathan W. Lewis, Dallas, TX (US)
Assigned to TANGO NETWORKS, INC., Frisco, TX (US)
Filed by TANGO NETWORKS, INC., Frisco, TX (US)
Filed on Jun. 13, 2022, as Appl. No. 17/839,250.
Application 17/839,250 is a continuation of application No. 16/581,590, filed on Sep. 24, 2019, granted, now 11,363,511.
Application 16/581,590 is a continuation of application No. 15/195,508, filed on Jun. 28, 2016, granted, now 10,425,871, issued on Sep. 24, 2019.
Application 15/195,508 is a continuation of application No. 14/243,125, filed on Apr. 2, 2014, granted, now 9,380,506, issued on Jun. 28, 2016.
Application 14/243,125 is a continuation of application No. 12/196,097, filed on Aug. 21, 2008, granted, now 8,705,487, issued on Apr. 22, 2014.
Claims priority of provisional application 60/957,121, filed on Aug. 21, 2007.
Prior Publication US 2022/0312290 A1, Sep. 29, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/14 (2009.01); H04W 36/00 (2009.01); H04W 36/38 (2009.01); H04W 76/20 (2018.01); H04W 88/06 (2009.01); H04W 88/16 (2009.01)
CPC H04W 36/14 (2013.01) [H04W 36/0022 (2013.01); H04W 36/385 (2013.01); H04W 76/20 (2018.02); H04W 88/06 (2013.01); H04W 88/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by one of an enterprise gateway server or a carrier gateway server in a network, a request for a handover to the other one of the enterprise gateway server or the carrier gateway server in a different network;
identifying, by the one of the enterprise gateway server or the carrier gateway server that receives the request, that the request was not received from the other one of the enterprise gateway server or the carrier gateway server;
in response to the identifying, sending the request to the other one of the enterprise gateway server or the carrier gateway server; and
approving, by the other one of the enterprise gateway server or the carrier gateway server, the request based on the request complying with a corresponding enterprise policy or a corresponding carrier policy.