Methods and apparatus for transmitting accurate emergency location identification numbers (ELINs) from behind a multi-line telephone system (MLTS) utilizing port equipment numbers

• US 20020136364A1
• Filed: 03/23/2001
• Published: 09/26/2002
• Est. Priority Date: 03/23/2001
• Status: Active Grant

• Current Assignee: Unify Inc. (Atos SE)
• Original Assignee: Siemens Communications Incorporated (Siemens AG)
• Inventors: Ozery, Nissim, Frank, Richard, Stumer, Peggy M., Kucmerowski, Dennis, Meiden, David A. Vander
• Granted Patent: US 6,757,359 B2
• Time in Patent Office: Days
• US Class Current: 379/45
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 2242/22 Automatic class or number identification arrangements
• CPC Class Codes: H04M 2242/30 Determination of the location of a subscriber
• CPC Class Codes: H04M 3/42042 Notifying the called party of information on the calling party details within substation equipment H04M1/57, signalling details H04Q3/72
• CPC Class Codes: H04M 3/42059 Making use of the calling party identifier
• CPC Class Codes: H04M 3/42195 Arrangements for calling back a calling subscriber when the wanted subscriber ceases to be busy H04M3/48
• CPC Class Codes: H04M 3/42314 in private branch exchanges

Abstract

Methods for accurate transmission of ELIN/callback number from an emergency caller calling from behind a PBX/MLTS include assigning a port equipment number to each device/trunk of the PBX/MLTS and associating ports/devices with ELINs and callback numbers. The apparatus of the invention detects an emergency number, assigns the call priority, and uses the port/device number to determine the ELIN/callback number and properly transmit the ELIN/callback number.

Claims

1. A method for processing an emergency call made from behind a PBX/MLTS said method comprising the steps of:

a) storing a port equipment number for each device/trunk of the PBX/MLTS;

b) determining from which port the emergency call originated; and

c) transmitting to a public safety answering point information associated with the port equipment number of the device/trunk from which the emergency call originated.

2. A method according to claim 1 further comprising the step of associating an emergency location identification number (ELIN) with each port equipment number.

3. A method according to claim 2 wherein said step of transmitting includes transmitting the ELIN associated with the port equipment number of the port from which the emergency call originated.

4. A method according to claim 1 further comprising the step of associating a callback number with each port equipment number.

5. A method according to claim 4 wherein said step of transmitting includes transmitting the callback number associated with the port equipment number of the port from which the emergency call originated.

6. A method according to claim 1 further comprising the step of associating an emergency location identification number (ELIN) and a callback number with each port equipment number.

7. A method according to claim 6 wherein said step of transmitting includes transmitting the ELIN and callback number associated with the port equipment number of the port from which the emergency call originated.

8. A method according to claim 1 further comprising the step of assigning a device identification number to each device coupled to each port.

9. A method according to claim 8 wherein said step of determining includes determining from which device the emergency call originated.

10. A method according to claim 9 wherein said step of transmitting includes transmitting information associated with the device identification number of the device from which the emergency call originated.

11. An apparatus for processing an emergency call made from behind a PBX/MLTS, said apparatus comprising:

a) means for storing a port equipment number for each device/trunk of the PBX/MLTS;

b) means for determining from which port the emergency call originated; and

c) means for transmitting to a public safety answering point information associated with the port equipment number of the device/trunk from which the emergency call originated.

12. An apparatus according to claim 11 further comprising means for associating an emergency location identification number (ELIN) with each port equipment number.

13. An apparatus according to claim 12 wherein said means for transmitting includes means for transmitting the ELIN associated with the port equipment number of the device/trunk from which the emergency call originated.

14. An apparatus according to claim 12 further comprising means for associating a callback number with each ELIN.

15. An apparatus according to claim 14 wherein said means for transmitting includes means for transmitting the callback number associated with the ELIN of the device/trunk from which the emergency call originated.

16. An apparatus according to claim 12 further comprising means for associating an emergency location identification number (ELIN) and a callback number with each port equipment number.

17. An apparatus according to claim 16 wherein said means for transmitting includes means for transmitting the ELIN and callback number associated with the port equipment number of the device/trunk from which the emergency call originated.

18. An apparatus according to claim 11 further comprising means for assigning a device identification number to each device coupled to each port.

19. An apparatus according to claim 18 wherein said means for determining includes means for determining from which device/trunk the emergency call originated.

20. An apparatus according to claim 19 wherein said means for transmitting includes means for transmitting information associated with the device identification number of the device from which the emergency call originated.