Handling emergency calls using EAP
First Claim
1. A method for placing an emergency voice-over-Internet Protocol (VoIP) call from a terminal via a preferred network, the method comprising:
- receiving, at an access network that is disparate from a home network of the terminal, an identity response from the terminal that includes preference data indicative of at least one intermediary network that supports emergency calling;
performing authentication between an authentication, authorization and accounting (AAA) server associated with the access network and an AAA server associated with the home network via the at least one intermediary network; and
connecting an emergency call initiated by the terminal to an emergency center via the at least one intermediary network if the authentication is successful.
4 Assignments
0 Petitions
Accused Products
Abstract
A user (terminal) is allowed to make an emergency voice-over-Internet Protocol (VoIP) phone call through an access network, such as a wireless local area network (WLAN) using Extensible Authentication Protocol (EAP). The emergency call can be made with or without authentication credentials and is identified by the user'"'"'s terminal transmitting a Network Access Identifier (NAI) having a user part and/or realm part that indicates the emergency nature of the call, such as e911@e911.com. In response to such an NAI, the caller can be immediately granted limited authentication for the purpose of connecting to an emergency call center. Alternatively, the user (terminal) can be authenticated through networks supporting emergency calls, such as the user'"'"'s home network, if the terminal indicates to the access network authentication server a preference or requirement for using such networks. The call can be routed to the emergency call center either directly or via one or more intermediary networks, such as networks that support emergency VoIP phone calls.
10 Citations
20 Claims
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1. A method for placing an emergency voice-over-Internet Protocol (VoIP) call from a terminal via a preferred network, the method comprising:
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receiving, at an access network that is disparate from a home network of the terminal, an identity response from the terminal that includes preference data indicative of at least one intermediary network that supports emergency calling; performing authentication between an authentication, authorization and accounting (AAA) server associated with the access network and an AAA server associated with the home network via the at least one intermediary network; and connecting an emergency call initiated by the terminal to an emergency center via the at least one intermediary network if the authentication is successful. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for controlling placement of an emergency voice-over-Internet Protocol (VoIP) call from a terminal in communication with an access network, the system comprising:
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an access point, within the access network, that receives an identity response from the terminal that comprises preference data indicative of one or more intermediary networks that support emergency calling associated with a VoIP call, the access network is different from a home network to which the terminal subscribes; and an authentication, authorization and accounting (AAA) server, local to the access network, that performs authentication of the terminal with an AAA server associated with the home network via the one or more intermediary networks, an emergency call initiated by the terminal is routed to an emergency center via the one or more intermediary networks if the authentication is successful. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for controlling placement of an emergency voice-over-Internet Protocol (VoIP) call from a terminal roaming within access network that is not the terminal'"'"'s home network, the system comprising:
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means for receiving, within the access network, information from the terminal indicating a preference for employing an intermediary network that supports an emergency call; and means for authenticating the terminal with an AAA server associated with the terminal'"'"'s home network via the intermediary network. - View Dependent Claims (20)
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Specification