Disaster recovery via alternative terminals and partitioned networks

• US 7,983,148 B1
• Filed: 07/12/2004
• Issued: 07/19/2011
• Est. Priority Date: 07/12/2004
• Status: Active Grant

• Current Assignee: Arlington Technologies, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Avaya Incorporated
• Inventors: Pessot, Albert D., Chavez, David L., Stefanacci, Emil F., Milton, Stephen M., Abramson, Sandra R.
• Primary Examiner(s): WONG, XAVIER S
• Application Number:
  US10/890,486
• Time in Patent Office: 2,563 Days
• Field of Search: 370216-221, 370/225, 370229-235, 370/237
• US Class Current: 370/217
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04Q 3/62 for connecting to private branch exchanges

Abstract

An enterprise network is provided that includes a plurality of internal terminals 108, 112 corresponding to a plurality of subscribers and a network reconfiguration agent 212 operable to (a) determine that at least one of a requested connection to a first terminal 112-1 associated with a subscriber and a connected communication with the first terminal 112-1 will have and/or has an undesirable grade of service and (b) in response thereto, perform at least one of the following operations: (i) direct the requested connection or connected communication to a second terminal 108, 140 associated with the subscriber; and (ii) change the communication path for the requested connection or connected communication from a first communication path comprising a first network 110 but not a second network 404 to a second communication path comprising the second network 404 but not the first network 110.

Claims

1. A method for processing a communication in an enterprise network, comprising:

(a) determining, by a processor, that at least one of a requested connection to a first terminal associated with a subscriber and a connected communication with the first terminal will have upon set up and/or currently has an unacceptable grade of service, respectively;

(b) in response thereto, a processor capable of performing both of the following;

(i) directing, by the processor, the at least one of a requested connection and a connected communication to a second terminal associated with the subscriber, the first and second terminals being different from one another and the first terminal being a wired terminal other than a cellular phone and second terminal being a cellular phone; and

(ii) changing, by the processor, the communication path for the at least one of a requested connection and a connected communication from a first communication path comprising a first private network but not a second private network to a second communication path comprising the second private network but not the first private network, wherein, in (ii), each of the first and second communication paths are connected to the same set of endpoints that includes the first terminal and the first and second communication paths use a common public network, wherein, in (ii), each of the first and second private networks has a corresponding preference for carrying communications, and wherein the first and second private networks are part of a common enterprise network;

wherein the at least one of a requested connection and a connected communication is a requested connection, wherein the requested connection is received by a first port network and/or gateway, wherein the first terminal is connected to a second port network and/or gateway, wherein the first and second port networks and/or gateways are part of the common enterprise network, wherein each of the first and second private networks connect the first and second port networks and/or gateways, and wherein the changing step comprises;

determining the highest preference private network capable of providing the desired grade of service for the at least one of a requested connection and a connected communication.

2. The method of claim 1, wherein the at least one of a requested connection and a connected communication is a requested connection, wherein the requested connection will have an unacceptable grade of service if completed and wherein the unacceptable grade of service results from a catastrophic failure of a network to which the first terminal is connected.

3. The method of claim 1, wherein the at least one of a requested connection and a connected communication is a connected communication, wherein the communication has an unacceptable grade of service, and wherein the unacceptable grade of service results from congestion of a network to which the first terminal is connected.

4. The method of claim 1, wherein (i) is performed and wherein a database accessible by a server has, for each of a plurality of subscribers, a corresponding internal first telephone address for a wired terminal supported by the server and a corresponding external second address for a cellular phone not supported by the media server.

5. The method of claim 4, wherein the at least one of a requested connection and a connected communication is a communication connected on a first connection and wherein the communication has an unacceptable grade of service and wherein the directing step comprises:

establishing a second connection between the terminal of a contactee in the communication with the second terminal;

notifying the subscriber of the second connection; and

when the subscriber accepts the second connection, disconnecting the first connection.

6. The method of claim 4, wherein the at least one of a requested connection and a connected communication is a requested connection and wherein the requested connection will have an unacceptable grade of service if completed and the directing step comprises:

setting up the requested communication with the second terminal.

7. The method of claim 4, wherein after (i) the grade of service for the requested connection increases to an acceptable level and further comprising:

redirecting the requested communication to the first terminal.

8. The method of claim 1, wherein (ii) is performed, wherein the preference changes dynamically in response to changes in the grade of service for each of the first and second private networks and wherein the first private network has a higher preference for the at least one of a requested connection and a connected communication than the second private network.

9. The method of claim 1, wherein (ii) is performed and wherein the first private network is a data network carrying bearer traffic and the second private network carries control signaling between a media server and port networks.

10. The method of claim 4, wherein the at least one of a requested connection and connected communication is redirected to the first terminal when a grade of service over the first communication path becomes acceptable.

11. The method of claim 5, wherein the subscriber is notified of the second connection by at least one of a set of tones played over the first terminal, a voice message played over the first terminal, a special alerting ring played by the first terminal, and a text message displayed on the first terminal'"'"'s display and wherein the subscriber accepts the second connection by at least one of placing second terminal in an off-hook state and placing the first terminal in an on-hook state.

12. The method of claim 5, wherein the server forces the second terminal to auto-answer the second connection and the first terminal to terminate the connected communication.

13. The method of claim 5, wherein a feature bit is set in a station record for the first terminal, the feature bit notifying the server that the state of the terminal is out-of-service and that all communications to the first terminal are to be forwarded to the second terminal.

14. The method of claim 8, wherein the at least one of a requested connection and a connected communication is a connected communication and further comprising:

determining a set of performance metrics for the first communication path;

comparing the set of performance metrics against a selected set of performance metrics to determine whether a grade of service is acceptable; and

when the grade of service using the first communication path is not acceptable, performing step (ii).

15. The method of claim 8, wherein the at least one of a requested connection and a connected communication is a requested connection over the first communication path to the first terminal, wherein the first communication path has a higher preference than the second communication path, and further comprising:

identifying at least one of a port network and gateway in the first communication path to the first terminal;

determining a first set of performance metrics for the first communication path;

comparing the first set of performance metrics against a selected set of performance metrics to determine whether a grade of service is acceptable for the first communication path;

when the grade of service is acceptable, completing the requested connection using the first communication path;

when the grade of service is not acceptable, identifying at least one of a port network and gateway in the second communication path to the first terminal;

determining a second set of performance metrics for the second communication path;

comparing the second set of performance metrics against a selected set of performance metrics to determine whether a grade of service is acceptable for the second communication path;

when the grade of service is acceptable, completing the requested connection using the second communication path; and

when the grade of service is not acceptable, repeating the identifying, determining, and comparing steps with respect to a third communication path to the first terminal.

16. The method of claim 8, wherein the preference of each of the first and second networks changes by a class of service of a subscriber involved in the at least one of a requested connection and connected communication the class of service being a function of the identity of the subscriber, such that at a selected time, for a first subscriber corresponding to a first class of service, a first private network has a first preference and a second private network a second preference and, for a second subscriber corresponding to a second class of service, the first private network has a second preference and the second private network a first preference.

17. The method of claim 8, wherein the at least one of a requested connection and connected communication is redirected to the first communication path when a grade of service over the first communication path becomes acceptable.

18. The method of claim 8, wherein the first private network is of a first type, wherein the second private network is of a second type, wherein the first and second private networks are packet-switched, wherein the first and second types are different from one another, and wherein the network type is determined by a communication protocol employed by the respective network.

19. A non-transitory computer readable information storage medium comprising processor executable instructions operable, when executed, to perform the steps of claim 1.

20. An enterprise network, comprising:

a plurality of internal terminals corresponding to a plurality of subscribers; and

a network reconfiguration agent that (a) determines that at least one of a requested connection to a first terminal associated with a subscriber and a connected communication with the first terminal at least one of will have upon set up and currently has an unacceptable grade of service, respectively, and (b) in response thereto, capable of performing both of the following operations;

(i) directs the at least one of a requested connection and a connected communication to a second terminal associated with the subscriber, the first and second terminals being different from one another and the first terminal being a wired desk-top terminal other than a cellular telephone and second terminal being a cellular telephone; and

(ii) changes the communication path for the at least one of a requested connection and a connected communication from a first communication path comprising a first private network but not a second private network to a second communication path comprising the second private network but not the first private network, wherein each of the first and second communication paths are connected to the same set of endpoints that includes the first terminal and the first and second communication paths use a common public network, and wherein the first and second private networks are part of a common enterprise network;

wherein the first private network has a higher preference for the at least one of a requested connection and a connected communication than the second private network, wherein the at least one of a requested connection and a connected communication is a requested connection, wherein the requested connection is received by a first port network and/or gateway, wherein the first terminal is connected to a second port network and/or gateway, wherein the first and second port networks and/or gateways are part of the common enterprise network, and wherein each of the first and second private networks connect the first and second port networks and/or gateways.

21. The network of claim 20, wherein the at least one of a requested connection and a connected communication is a requested connection, wherein the requested connection will have an unacceptable grade of service if completed, and wherein the unacceptable grade of service results from a catastrophic failure of a network to which the first terminal is connected.

22. The network of claim 20, wherein the at least one of a requested connection and a connected communication is a connected communication, wherein the communication has an unacceptable grade of service, and wherein the unacceptable grade of service results from congestion of a network to which the first terminal is connected.

23. The network of claim 20, wherein the network reconfiguration agent performs operation (i) and wherein a database accessible by the network reconfiguration agent has, for each of a plurality of subscribers, a corresponding internal first telephone address for a wired terminal supported by an enterprise network and a corresponding external second address for a cellular phone not supported by the enterprise network.

24. The network of claim 23, wherein the at least one of a requested connection and a connected communication is a communication connected on a first connection and wherein the communication has an unacceptable grade of service and wherein in the directing operation a second connection is established between the terminal of a contactee in the communication with the second terminal, the subscriber is notified of the second connection, and, when the subscriber accepts the second connection, the first connection is disconnected.

25. The network of claim 23, wherein the at least one of a requested connection and a connected communication is a requested connection and wherein the requested connection will have an unacceptable grade of service if completed and in the directing operation the requested communication is set up using the second terminal.

26. The network of claim 23, wherein, after operation (i) is performed by the agent, the grade of service for the requested connection increases to an acceptable level and the requested communication is redirected to the first terminal.

27. The network of claim 20, wherein operation (ii) is performed, wherein, in (ii), each of the first and second private networks has a corresponding preference for carrying communications, wherein the preference changes dynamically in response to changes in the grade of service for each of the first and second private networks, and wherein the first private network has a higher preference for the at least one of a requested connection and a connected communication than the second private network.

28. The network of claim 27, wherein, in the changing operation, the agent determines the highest preference private network capable of providing the desired grade of service for the at least one of a requested connection and a connected communication.