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 a plurality of communication devices, an Open Systems Interconnect (OSI) Layer 2 switch connected to a subset of the plurality of communication devices, and a corresponding enterprise switch servicing the plurality of communication devices, wherein a first communication device is connected to a respective first port of the Layer 2 switch, wherein the enterprise network corresponds to a plurality of Emergency Location Information Numbers (ELINs) associated with differing segments of the enterprise network, and wherein the Layer 2 switch serves at least one of the differing segments;
(b) when a first event occurs involving the first communication device, the first communication device obtaining from the Layer 2 switch at least one of a switch identifier of the Layer 2 switch and a port identifier identifying the respective first port to which the first communication is connected;
(c) when at least one of the first event and a second event occurs, the enterprise switch obtaining the at least one of a switch identifier and port identifier from the first communication device;
(d) the enterprise switch, thereafter receiving from the first communication device, a first contact to a universal emergency number and a first extension assigned to the first communication device;
(e) the enterprise switch, maintaining a set of data structures mapping switch identifiers and/or port identifiers 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 first extension received from the first 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 first contact, 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.
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Citations
27 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 a plurality of communication devices, an Open Systems Interconnect (OSI) Layer 2 switch connected to a subset of the plurality of communication devices, and a corresponding enterprise switch servicing the plurality of communication devices, wherein a first communication device is connected to a respective first port of the Layer 2 switch, wherein the enterprise network corresponds to a plurality of Emergency Location Information Numbers (ELINs) associated with differing segments of the enterprise network, and wherein the Layer 2 switch serves at least one of the differing segments; (b) when a first event occurs involving the first communication device, the first communication device obtaining from the Layer 2 switch at least one of a switch identifier of the Layer 2 switch and a port identifier identifying the respective first port to which the first communication is connected; (c) when at least one of the first event and a second event occurs, the enterprise switch obtaining the at least one of a switch identifier and port identifier from the first communication device; (d) the enterprise switch, thereafter receiving from the first communication device, a first contact to a universal emergency number and a first extension assigned to the first communication device; (e) the enterprise switch, maintaining a set of data structures mapping switch identifiers and/or port identifiers 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 first extension received from the first 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 first contact, the first ELIN to a public safety answering point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In an enterprise network comprising a plurality of communication devices, an Open Systems Interconnect (OSI) Layer 2 switch and a corresponding enterprise switch, wherein the communication device is connected to a respective first port of the Layer 2 switch, wherein the enterprise network comprises a plurality of Emergency Location Information Numbers (ELINs) corresponding to differing segments of the enterprise network, and wherein the Layer 2 switch serves at least one of the differing segments including the first communication device, the first communication device comprising:
a discovery agent operable, when a first event occurs, to obtain from the Layer 2 switch at least one of a switch identifier from the Layer 2 switch and a port identifier identifying the respective first port, wherein the discovery agent is further operable, when at least one of the first event and a second event occurs, to provide the at least one of a switch identifier and port identifier to the enterprise switch, and wherein the at least one of the first and second events is not part of and precedes the initiation of a call to a universal emergency number. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. In an enterprise network comprising a plurality of communication devices, an Open Systems Interconnect (OSI) Layer 2 switch to which a subset of the communication devices are connected, and a corresponding enterprise switch servicing the plurality of communication devices, wherein a first communication device is connected to a respective first port of the Layer 2 switch, the at least one enterprise network comprising a plurality of Emergency Location Information Numbers (ELINs), each ELIN corresponding to a differing segment of the enterprise network, and wherein the Layer 2 switch serves at least one of the differing segments, a communication device comprising:
means for, when a first event occurs, obtaining from the Layer 2 switch at least one of a switch identifier of the Layer 2 switch and a port identifier identifying the respective first port, and for, when a second event occurs, the second event being unrelated to the first event, providing the at least one of a switch identifier and port identifier to the enterprise switch, wherein the enterprise switch determines a first ELIN corresponding to the first communication device when a call to a universal emergency number is received from the first communication device and forwards the first ELIN to a public safety answering point. - View Dependent Claims (25, 26, 27)
Specification