Advanced port-based E911 strategy for IP telephony
First Claim
1. A method for providing emergency location information to an emergency service provider, comprising:
- (a) providing an enterprise network comprising at least one communication device, an Open Systems Interconnect (OSI) switch and a corresponding enterprise switch, wherein the communication device is connected to an access point connected to the OSI switch, the enterprise network corresponding to a plurality of Emergency Location Information Numbers (ELINs) associated with differing segments of the enterprise network, and wherein the OSI switch serves at least one of the differing segments;
(b) when a predetermined first event occurs, the communication device obtaining via the access point an access point identifier;
(c) the communication device thereafter maintaining the access point identifier in memory;
(d) when a call is initiated by the communication device to a universal emergency number, the communication device providing the access point identifier to the enterprise switch in a message transmitted via the access point;
(e) the enterprise switch, maintaining a set of data structures mapping the access point identifier to an ELIN corresponding to a network segment comprising the corresponding communication device and, in response to step (d), using the set of data structures and access point identifier received from the communication device to select a first ELIN corresponding to a first network segment including the first communication device; and
(f) the enterprise switch, forwarding, as part of the call, the first ELIN to a public safety answering point.
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Accused Products
Abstract
An enterprise network includes at least one communication device 208-1, an Open Systems Interconnect (OSI) Layer 2 switch 206, and a corresponding enterprise switch 208. The communication device 208-1 is connected to at least one of an access point 904-1 and a respective port 207-1 of the Layer 2 switch 206. The enterprise network includes a plurality of Emergency Location Information Numbers (ELINs) corresponding to differing segments of the enterprise network. The Layer 2 switch 206 serves at least one of the differing segments. The communication device 208-1 includes a discovery agent 252 operable, when a predetermined first event occurs, to obtain from the Layer 2 switch 206 at least one of an access point identifier, a switch identifier from the Layer 2 switch 206, and a port identifier identifying the respective port 207-1.
144 Citations
15 Claims
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1. A method for providing emergency location information to an emergency service provider, comprising:
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(a) providing an enterprise network comprising at least one communication device, an Open Systems Interconnect (OSI) switch and a corresponding enterprise switch, wherein the communication device is connected to an access point connected to the OSI switch, the enterprise network corresponding to a plurality of Emergency Location Information Numbers (ELINs) associated with differing segments of the enterprise network, and wherein the OSI switch serves at least one of the differing segments; (b) when a predetermined first event occurs, the communication device obtaining via the access point an access point identifier; (c) the communication device thereafter maintaining the access point identifier in memory; (d) when a call is initiated by the communication device to a universal emergency number, the communication device providing the access point identifier to the enterprise switch in a message transmitted via the access point; (e) the enterprise switch, maintaining a set of data structures mapping the access point identifier to an ELIN corresponding to a network segment comprising the corresponding communication device and, in response to step (d), using the set of data structures and access point identifier received from the communication device to select a first ELIN corresponding to a first network segment including the first communication device; and (f) the enterprise switch, forwarding, as part of the call, the first ELIN to a public safety answering point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In an enterprise network comprising at least one communication device, an Open Systems Interconnect (OSI) switch and a corresponding enterprise switch, wherein the communication device is wirelessly connected to an access point, the access point being connected to the OSI switch, the enterprise network comprising a plurality of Emergency Location Information Numbers (ELINs) corresponding to differing segments of the enterprise network, and wherein the OSI switch serves at least one of the differing segments, the at least one communication device comprising:
a discovery agent operable, when a predetermined first event occurs, to obtain an access point identifier from the access point and maintain the access point identifier in memory and when a call is initiated by the communication device to a universal emergency number to provide the access point identifier to the enterprise switch in a message transmitted via the access point and wherein the predetermined first event is not part of and precedes the initiation of the call to the universal emergency number. - View Dependent Claims (10, 11, 12)
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13. In an enterprise network comprising at least one communication device, an Open Systems Interconnect (OSI) switch and a corresponding enterprise switch, wherein the communication device is wirelessly connected to an access point, the access point being connected to the Layer 2 switch, the enterprise network comprising a plurality of Emergency Location Information Numbers (ELINs) corresponding to differing segments of the enterprise network, and wherein the Layer 2 switch serves at lest one of the differing segments, the at least one communication device comprising:
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a means for, when a predetermined first event occurs, obtaining from the communication device the access point identifier and maintaining the access point identifier in memory; and a means for, when a call is initiated by the communication device to a universal emergency number, providing the access point identifier to the enterprise switch in a message transmitted via the access point, wherein the predetermined first event is not part of and precedes the initiation of the call to the universal emergency number. - View Dependent Claims (14, 15)
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Specification