Patent ID: 9380610
Filing Date: 2016-06-28
CPC Classification: H04L,H04W

Claim Text:
1. A method, comprising: at a client station: determining that a first connection to a cellular network is unavailable, the client station being associated with a home network, the home network having a home Public-Safety Answering Point (PSAP) associated therewith, the client station disposed at a geographic location outside the home network, the geographic location having a remote PSAP associated therewith; determining that a second connection to a WiFi network is available; establishing the second connection to the WiFi network; and performing an emergency call over the WiFi network by registering with an Internet Protocol (IP) Multimedia Subsystem (IMS), the registering including providing location information of the client station, the emergency call being routed to the remote PSAP associated with the geographic location corresponding to the location information.