Providing private network information during emergency calls

• US 6,680,998 B1
• Filed: 11/19/2001
• Issued: 01/20/2004
• Est. Priority Date: 11/19/2001
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Bell, Robert T., Dewan, Rohit
• Primary Examiner(s): Ramakrishnaiah, Melur
• Application Number:
  US09/989,810
• Time in Patent Office: 792 Days
• Field of Search: 379/37, 379/38, 379/39, 379/40, 379/41, 379/42, 379/43, 379/44, 379/45, 379/49, 455/404
• US Class Current: 379/37
• CPC Class Codes: H04M 11/045 using recorded signals, e.g. speech
• CPC Class Codes: H04M 11/06 Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
• CPC Class Codes: H04Q 2213/1337 Operator, emergency services
• CPC Class Codes: H04Q 2213/13384 Inter-PBX traffic, PBX networks, e.g. corporate networks
• CPC Class Codes: H04Q 3/72 Finding out and indicating number of calling subscriber

Abstract

A telephony communication system includes a private network with multiple telephony devices that couples to the public switched telephone network (PSTN). During emergency calls from devices in the private network (such as 911 calls), elements of the private network may provide enhanced services. In response to an appropriate request during the emergency call, the private network may supply detailed location information of the calling device to the operator within the emergency call. The private network may further supply relevant personal information for a user associated with the calling device to the emergency operator during the call. The private network may supply the location information and/or personal information to other personnel, such as an emergency access point or private emergency response personnel. Private network may further conference private emergency response personnel into emergency calls between managed telephony devices and governmental emergency response personnel.

Claims

1. A method for providing location information during an emergency call, the method comprising the steps of:

detecting an emergency call placed from a telephony device, the emergency call having an established voice link between the telephony device and an emergency operator communications device;

determining a physical location of the telephony device;

receiving a request for the physical location from an emergency operator handling the emergency call using the emergency operator communications device, the request communicated by the emergency operator in the emergency call; and

in response to the request, generating audio identifying the physical location and presenting the audio identifying the physical location to the emergency operator in the emergency call.

2. The method of claim 1, wherein presenting the audio further comprises overlaying the audio identifying the physical location on communications from a user of the telephony device within the voice link.

3. The method of claim 1, wherein generating the audio comprises converting a text record of the physical location into speech.

4. The method of claim 1, further comprising:

identifying a personal record associated with the telephony device;

generating audio specifying information from the personal record; and

presenting the audio specifying the information from the personal record to the emergency operator in the emergency call.

5. The method of claim 3, wherein the personal record comprises a medical history for a user associated with the telephony device.

6. The method of claim 3, wherein the personal record comprises a message prerecorded by a user associated with the telephony device.

7. The method of claim 1, wherein the emergency call couples the telephony device from within a private network to a public service answering point (PSAP) in the public switched telephone network (PSTN), the PSAP providing the emergency operator coarse physical location information for the telephony device, wherein the coarse physical location information identifies the request for soliciting the physical location from the private network and the request comprises a signal generated by the emergency operator using the emergency operator communications device, the physical location providing finer geographic granularity than the coarse physical location information.

8. The method of claim 1, wherein the response comprises a dual-tone multi-frequency signal.

9. The method of claim 1, further comprising:

determining an emergency access point associated with the telephony device; and

communicating an emergency notification to the emergency access point, the emergency notification identifying the physical location.

10. The method of claim 1, further comprising conferencing a private emergency operator in to the emergency call, such that the emergency operator, the private emergency operator, and a user of the telephony device may participate in the emergency call.

11. The method of claim 10, further comprising:

accessing an emergency resources database based on a type of emergency for the emergency call and the physical location to determine available emergency resources; and

presenting the available emergency resources to the private emergency operator.

12. A network apparatus comprising:

a database maintaining location information, the location information identifying a physical location of a telephony device;

an interface operable to detect an emergency call placed from the telephony device, the emergency call having an established voice link between the telephony device and an emergency operator communications device, the interface further operable to receive a request for the physical location from an emergency operator handling the emergency call, the request communicated by the emergency operator in the emergency call, and to insert audio signals into the voice link of the emergency call; and

a controller operable, in response to the request, to access the location information to determine the physical location, to generate audio identifying the physical location, and to present the audio identifying the physical location to the emergency operator in the emergency call using the interface.

13. The apparatus of claim 12, wherein the controller is further operable to present the audio by overlaying the audio identifying the physical location on communications from a user of the telephony device using the interface within the voice link.

14. The apparatus of claim 12, wherein:

the database maintains the physical location in text; and

the controller is further operable to generate the audio by converting the text of the physical location into speech.

15. The apparatus of claim 12, wherein:

the database further maintains a personal record associated with the telephony device; and

the controller is further operable to generate audio specifying information from the personal record and to present the audio specifying the information from the personal record to the emergency operator in the emergency call using the interface.

16. The apparatus of claim 15, wherein the personal record comprises a medical history for a user associated with the telephony device.

17. The apparatus of claim 15, wherein the personal record comprises a message prerecorded by a user associated with the telephony device.

18. The apparatus of claim 12, wherein the emergency call couples the telephony device from within a private network to a public service answering point (PSAP) in the public switched telephone network (PSTN), the PSAP providing the emergency operator coarse physical location information for the telephony device, wherein the coarse physical location information identifies the request for soliciting the physical location from the private network and the request comprises a signal generated by the emergency operator using the emergency operator communications device, the physical location providing finer geographic granularity than the coarse physical location information.

19. The apparatus of claim 12, wherein the response comprises a dual-tone multi-frequency signal.

20. The apparatus of claim 12, wherein the telephony device comprises a packet-based telephony communications apparatus coupled to a private packet-based network.

21. The apparatus of claim 12, wherein the controller is further operable to:

determine an emergency access point associated with the telephony device; and

communicate an emergency notification to the emergency access point, the emergency notification identifying the physical location.

22. The apparatus of claim 12, wherein the controller is further operable to conference a private emergency operator in to the emergency call, such that the emergency operator, the private emergency operator, and a user of the telephony device may participate in the emergency call.

23. The apparatus of claim 22, wherein the controller is further operable to:

access an emergency resources database based on a type of emergency for the emergency call and the physical location to determine available emergency resources; and

present the available emergency resources to the private emergency operator.

24. Logic for providing location information during an emergency call, the logic encoded in media and operable to:

detect an emergency call placed from a telephony device, the emergency call having an established voice link between the telephony device and an emergency operator communications device;

determine a physical location of the telephony device;

receive a request for the physical location from an emergency operator handling the emergency call, the request communicated by the emergency operator in the emergency call; and

in response to the request, generate audio identifying the physical location and presenting the audio identifying the physical location to the emergency operator in the emergency call.

25. The logic of claim 24, further operable to present the audio further by overlaying the audio identifying the physical location on communications from a user of the telephony device within the voice link.

26. The logic of claim 24, further operable to:

identify a personal record associated with the telephony device;

generate audio specifying information from the personal record; and

present the audio specifying the information from the personal record to the emergency operator in the emergency call.

27. The logic of claim 24, wherein the emergency call couples the telephony device from within a private network to a public service answering point (PSAP) in the public switched telephone network (PSTN), the PSAP providing the emergency operator coarse physical location information for the telephony device, wherein the coarse physical location information identifies the request for soliciting the physical location from the private network, the physical location providing finer geographic granularity than the coarse physical location information.

28. The logic of claim 24, further operable to:

determine an emergency access point associated with the telephony device; and

communicate an emergency notification to the emergency access point, the emergency notification identifying the physical location.

29. The logic of claim 24, further comprising conferencing a private emergency operator in to the emergency call, such that the emergency operator, the private emergency operator, and a user of the telephony device may participate in the emergency call.

30. The logic of claim 29, further comprising:

accessing an emergency resources database based on a type of emergency for the emergency call and the physical location to determine available emergency resources; and

presenting the available emergency resources to the private emergency operator.

31. A network apparatus with a private network, the apparatus comprising:

means for detecting an emergency call placed from a telephony device, the emergency call having an established voice link between the telephony device and an emergency operator communications device;

means for determining a physical location of the telephony device;

means for receiving a request for the physical location from an emergency operator handling the emergency call, the request communicated by the emergency operator in the emergency call; and

means for, in response to the request, generating audio identifying the physical location and presenting the audio identifying the physical location to the emergency operator in the emergency call.

32. A method for providing location information during an emergency call, the method comprising the steps of:

detecting an emergency call placed from a telephony device, the emergency call coupling the telephony device from within a private network to a public service answering point (PSAP) in the public switched telephone network (PSTN), the PSAP providing an emergency operator coarse-grained physical location information for the telephony device;

determining a fine-grained physical location of the telephony device;

receiving a request for the fine-grained physical location from the emergency operator, the request communicated by the emergency operator in the emergency call; and

in response to the request, generating audio identifying the fine-grained physical location and presenting the audio identifying the fine-grained physical location to the emergency operator in the emergency call, wherein presenting the audio comprises overlaying the audio identifying the physical location on communications from a user of the telephony device.