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AssigneeLucent Technologies Inc.
InventorsJoseph James Lichter, Michael Joseph Meyer, Ted Moulos
Estimating the term…
The system of the invention passes wireless caller location information through the common channel signaling network (CCSN) to the PSAP such that the PSAP can provide enhanced emergency services. The caller location information such as the latitude and longitude of the wireless device or the cell and cell sector from which a call is made is encoded in the ISUP (ISDN User Part) of the call set up message over the CCSN. The public switched network routes the call based on the called party number (CDPN) parameter to the appropriate selective router and the selective router routes the call to the appropriate PSAP based on the caller location. The caller location information is transmitted over an ISDN interface to the PSAP. The PSAP can then access additional caller information based on the CDPN parameter to provide enhanced emergency services. Thus, the system of the invention allows enhanced 9-1-1 service to be provided in wireless systems while utilizing existing wireless infrastructure and protocols.
A method for processing an emergency service call from a wireless device at a location in a wireless network of the type having at least one mobile switching center (MSC) and a plurality of public safety answering positions (PSAPs) connected to a selective router for routing the calls from the MSC to one of said PSAPs, said MSC being connected to the selective router over a common channel signaling network and said PSAPs being connected to said selective router over integrated services digital network (ISDN) interfaces, comprising the steps of:
A system for processing an emergency services call in a wireless network, comprising:
Dependencies are inferred from the claim text.