Apparatus and method for managing emergency calls
AssigneeAT&T Intellectual Property I, L.P.
InventorsChaoxin Qiu, Arshad Khan, Niral Sheth
Life of this patent
Estimating the term…
Abstract
A system that incorporates teachings of the present disclosure may include, for example, a network element operably couplable to an Internet Protocol Multimedia Subsystem network where the network element has a controller to receive an SIP request associated with a call, determine whether the SIP request comprises an identifier associated with an Emergency Call Session Control Function (E-CSCF) where the identifier was added to the SIP request by the E-CSCF, and provide the call to an emergency network when the identifier is associated with the E-CSCF. Other embodiments are disclosed.
Claims25
An article of manufacture comprising computer readable instructions that, when executed by a processor, cause a machine to perform operations including:
- receiving, at a Media Gateway Control Function, a session initiation protocol INVITE associated with a call;
- determining whether the session initiation protocol INVITE has a header associated with emergency calls;
- determining whether the header includes an Emergency Call Session Control Function identifier provisioned in the Emergency Call Session Control Function and added to the header by the Emergency Call Session Control Function, the Emergency Call Session Control Function identifier being unique to the Emergency Call Session Control Function;
- and
- providing the call to an emergency network when the Emergency Call Session Control Function identifier is in the header.
A network element comprising:
- a memory including machine readable instructions;
- and
- a processor to execute the instructions to:
- determine whether a session initiation protocol request includes an Emergency Call Session Control Function identifier added to a header by an Emergency Call Session Control Function, the Emergency Call Session Control Function identifier being unique to the Emergency Call Session Control Function;
- and
- provide a call to an emergency network when the Emergency Call Session Control Function identifier is in the header.
An Emergency Call Session Control Function network element comprising:
- a memory including machine readable instructions;
- and
- a processor to execute the instructions to:
- access a session initiation protocol request associated with a call, the session initiation protocol request received from a Proxy Call Session Control Function;
- add an identifier to the session initiation protocol request, the identifier to uniquely identify the Emergency Call Session Control Function network element;
- and
- provide the session initiation protocol request with the identifier to a Breakout Gateway Control Function, the call to be provided to an emergency network based on a recognition of the identifier.
A communication device:
- a memory including machine readable instructions;
- and
- a processor to execute the instructions to:
- register with a Proxy Call Session Control Function using a session initiation protocol request to communicate with an emergency network, an Emergency Call Session Control Function identifier provisioned in an Emergency Call Session Control Function added to the session initiation protocol request by the Emergency Call Session Control Function, the Emergency Call Session Control Function identifier unique to the Emergency Call Session Control Function, and the call to be provided to the emergency network based on a recognition of the Emergency Call Session Control Function identifier by a Media Gateway Control Function.
A method, comprising:
- associating, by executing an instruction with a processor, an identifier with an Emergency Call Session Control Function, the identifier unique to the Emergency Call Session Control Function;
- provisioning, by executing an instruction with the processor, a Media Gateway Control Function with the identifier;
- and
- providing, by executing an instruction with the Emergency Call Session Control Function, a call to an emergency network when the Emergency Call Session Control Function adds its provisioned identifier in a session initiation protocol INVITE associated with the call.
Dependencies are inferred from the claim text.