DEVICE BASED EMERGENCY SERVICES FOR CROSS CLUSTER EXTENSION MOBILITY

• US 20100150135A1
• Filed: 12/12/2008
• Published: 06/17/2010
• Est. Priority Date: 12/12/2008
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Trasi, Atul, Keller, Daniel Scott
• Granted Patent: US 8,311,036 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 2242/30 Determination of the location of a subscriber
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

A system is disclosed. The system has a call data receiver arranged to receive call data comprising number data indicative of a telephone number associated with a call connection request. The system also has a translator arranged to translate the received number data to obtain translated number data indicative of another telephone number. There is also a number data associator for associating the call connection request with the translated number data.

Claims

1. A method comprising:

receiving call data comprising number data indicative of a telephone number associated with a call connection request;

translating the received number data to obtain translated number data indicative of another telephone number; and

associating the call connection request with the translated number data.

2. A method defined by claim 1 wherein the number data is indicative of an emergency telephone number.

3. A method defined by claim 1 wherein the call data comprises location data indicative of a geographical location from which the call connection request originated.

4. A method defined by claim 3 wherein translating the number data comprises applying a translation pattern to the number data.

5. A method defined by claim 4 wherein the translation pattern is selected from a plurality of translation patterns in accordance with the location data.

6. A method defined by claim 4 wherein the number data comprises a string of alphanumeric digits and applying the translation pattern comprises concatenating a site code and the string, the site code being indicative of the geographical location.

7. A method defined by claim 4 wherein the number data comprises a string of alphanumeric digits, and applying the translation pattern comprises concatenating an Inter Cluster Trunk (ICT) code and the string, the ICT code being indicative of a geographical area in which is located the geographical location.

8. A method defined by claim 1 wherein translation of the number data is performed by a Calling Search Space.

9. A method defined by claim 1 further comprising forwarding the call connection request and the associated translated number data.

10. A method comprising:

receiving a call connection request associated with translated number data comprising a translation of number data indicative of a telephone number associated with the call connection request.

11. A method defined by claim 10 further comprising applying a translation pattern to the translated number data.

12. A method defined by claim 11 wherein the translated number data comprises a string of alphanumeric digits, and applying a translation pattern comprises matching a site code continued within the string.

13. A method defined by claim 11 wherein the translated number data comprises a string of alphanumeric digits, and applying a translation pattern comprises striping a pre-dot digit.

14. A method defined by claim 10 comprising connecting the call connection request using the translated number data.

15. A method defined by claim 14 comprising associating a Calling Line Identification (CLID) with the call connection so that the call request can be matched to a geographical location.

16. A method defined by claim 11 wherein applying a translation pattern exploits a Calling Search Space (CSS).

17. A method defined by claim 15 wherein the CSS contains a translation pattern for an emergency number.

18. A voice over IP system comprising:

a call data receiver arranged to receive call data comprising number data indicative of a telephone number associated with a call connection request;

a translator arranged to translate the received number data to obtain translated number data indicative of another telephone number;

a number data associator for associating the call connection request with the translated number data; and

a call connection request receiver arranged to receive a call connection request associated with translated number data comprising a translation of number data indicative of a telephone number associated with the call connection request.

19. Logic encoded in one or more tangible media for execution and when executed operable for:

receiving call data comprising number data indicative of a telephone number associated with a call connection request;

translating the received number data to obtain translated number data indicative of another telephone number; and

associating the call connection request with the translated number data.

20. Logic encoded in one or more tangible media for execution and when executed operable for:

receiving a call connection request associated with translated number data comprising a translation of number data indicative of a telephone number associated with the call connection request.