Emergency call handling using over-the-top services
First Claim
1. A method comprising:
- receiving, at a user equipment, an indication from a network providing packet switched services, the indication signifying that a carrier grade voice over cellular packet data call and a circuit switched fall back call are unavailable at a cell serving the user equipment, the indication further signifying that an over-the-top service is available at the cell serving the user equipment, the carrier grade voice over cellular packet data call comprising a packet switched voice call provided over an internet protocol multimedia subsystem of the network, the circuit switched fall back call comprising a voice call provided over a circuit switched network, and the over-the-top service comprising a voice over internet protocol service provided over the network; and
in response to the indication, initiating, by the user equipment, a call via the over-the-top service.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus, including computer program products, are provided for emergency call handling. In one aspect there is provided a method. The method may include receiving, at a user equipment, an indication from a network, the indication representative of at least one of whether a carrier grade voice over cellular packet data call is available at a cell serving the user equipment or whether an over-the-top service is available at the cell serving the user equipment; and initiating, by the user equipment based on the received indication from the network, a call via the over-the-top service, when the indication represents the carrier grade voice over cellular packet data call is not available at the cell serving the user equipment and the over-the-top service is available at the cell serving the user equipment. Related apparatus, systems, methods, and articles are also described.
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Citations
20 Claims
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1. A method comprising:
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receiving, at a user equipment, an indication from a network providing packet switched services, the indication signifying that a carrier grade voice over cellular packet data call and a circuit switched fall back call are unavailable at a cell serving the user equipment, the indication further signifying that an over-the-top service is available at the cell serving the user equipment, the carrier grade voice over cellular packet data call comprising a packet switched voice call provided over an internet protocol multimedia subsystem of the network, the circuit switched fall back call comprising a voice call provided over a circuit switched network, and the over-the-top service comprising a voice over internet protocol service provided over the network; and in response to the indication, initiating, by the user equipment, a call via the over-the-top service. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus, comprising:
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at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following; receive, at the apparatus, an indication from a network providing packet switched services, the indication signifying that a carrier grade voice over cellular packet data call and a circuit switched fall back call are unavailable at a cell serving the apparatus, the indication further signifying that an over-the-top service is available at the cell serving the apparatus, the carrier grade voice over cellular packet data call comprising a packet switched voice call provided over an internet protocol multimedia subsystem of the network, the circuit switched fall back call comprising a voice call provided over a circuit switched network, and the over-the-top service comprising a voice over internet protocol service provided over the network; and in response to the indication, initiate, by the apparatus, a call via the over-the-top service. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification