Method and apparatus for assisted emergency calls
First Claim
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1. A method in a communication system comprising a first terminal and an emergency center, the method comprising:
- receiving, by a network server in the communication system, an indicator transmitted by a second terminal during a set-up of a call session between the second terminal and the first terminal, the indicator indicating that emergency service is required for the first terminal; and
automatically establishing, by the network server, a conference session between the first terminal and the emergency center in response to receiving the indicator,wherein the conference session communicatively connects the first terminal, the second terminal and the emergency center.
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Abstract
A method is provided for use in a communication system that includes a first terminal and an emergency center. The method includes transmitting, by a second terminal, an indicator indicating that emergency service is required for the first terminal, and automatically establishing a call session between the first terminal and the emergency center in response to the indicator.
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Citations
19 Claims
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1. A method in a communication system comprising a first terminal and an emergency center, the method comprising:
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receiving, by a network server in the communication system, an indicator transmitted by a second terminal during a set-up of a call session between the second terminal and the first terminal, the indicator indicating that emergency service is required for the first terminal; and automatically establishing, by the network server, a conference session between the first terminal and the emergency center in response to receiving the indicator, wherein the conference session communicatively connects the first terminal, the second terminal and the emergency center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method performed by a first terminal in an IP Multimedia Subsystem (IMS) network, the first terminal comprising a network interface, the method comprising:
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receiving, during a call session between the first terminal and a second terminal, an indicator comprising a first Session Initiation Protocol (SIP) message from the second terminal for establishing a call conference with an emergency center; in response to receiving the first SIP message, transmitting via the network interface a second SIP message to a network server of the IMS network indicating that emergency service is required for the first terminal; and establishing the call session between the first terminal and the emergency center, wherein the call session is established as a conference session communicatively connecting the first terminal, the second terminal and the emergency center. - View Dependent Claims (11, 12, 13)
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14. A method performed by a network entity in an IP Multimedia Subsystem (IMS) network comprising an emergency center, the method comprising the steps of:
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receiving over the IMS network from a second terminal, during a set-up of a call session between the second terminal and a first terminal, an indicator comprising a Session Initiation Protocol (SIP) message indicating that emergency service is required for the first terminal; and in response to receiving the indicator, automatically establishing a conference session between the first terminal and the emergency center, wherein the conference session communicatively connects the first terminal, the second terminal and the emergency center. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification