Systems and methods for prioritized routing of telephone calls to a subscriber

• US 5,600,704 A
• Filed: 08/30/1994
• Issued: 02/04/1997
• Est. Priority Date: 08/30/1994
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Molne, Anders, Ahlberg, Bjorn G. D., Falk, Johan
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Maung, Nay Aung
• Application Number:
  US08/298,406
• Time in Patent Office: 889 Days
• Field of Search: 379/200, 379/210, 379/211, 379/57, 379/58, 379/59, 379/60, 379/61, 379/62, 379/63, 379/201
• US Class Current: 455/445
• CPC Class Codes: H04M 3/46 Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
• CPC Class Codes: H04Q 3/665 Circuit arrangements therefor
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold

Abstract

A cellular radio communications system maintains a prioritized routing list of several telephone numbers associated with a predetermined subscriber for efficiently establishing a communications link between a calling party and the subscriber. The telephone numbers of the several telephones associated with the subscriber are initially assigned relative priorities such that the telephones are sequentially alerted according to the prioritized routing lists of telephone numbers when a telephone call is placed to the subscriber. The prioritized routing list is subsequently reordered such that the telephone number from which the telephone from which the subscriber responded to the prior alert is assigned the highest priority will be initially alerted in response to the next telephone call placed to the subscriber.

Claims

1. A cellular radio communications system comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of the cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined telephone number associated with the predetermined subscriber wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber;

wherein said reprioritizing means comprises means for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber after the subscriber places a telephone call from an associated telephone such that the telephone from which the subscriber placed the telephone call is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

2. A cellular radio communications system according to claim 1 wherein said prioritized routing list of telephone numbers includes a listing of telephone numbers ranked from a highest priority to a lowest priority, and wherein said reprioritizing means comprises ranking means for designating the telephone number assigned to the telephone from which the subscriber responded to the alert with the highest priority of the prioritized routing list and for maintaining the relative rankings of the telephone numbers assigned to the other telephones associated with the subscriber from which the subscriber did not respond to the alert.

3. A cellular radio communications system according to claim 1 wherein said communications link establishing means comprises timer means for determining if the subscriber has responded to an alert of a first telephone associated with the subscriber within a predetermined time period such that said communications link establishing means can alert a second telephone associated with the subscriber according to said prioritized routing list if the subscriber has not responded to the alert of the first telephone.

4. A cellular radio communications system according to claim 1 wherein said reprioritizing means comprises telephone number determining means for determining the telephone number assigned to the telephone from which the subscriber responded to the alert.

5. A cellular radio communications system according to claim 1 further comprising:

a cellular radio network associated with said prioritized routing list, said communications link establishing means and said reprioritizing means; and

a plurality of cellular telephones responsive to said cellular radio network.

6. A cellular radio communications system according to claim 5 further comprising a feature node, responsive to said cellular radio network, for providing predetermined functions to said plurality of cellular telephones.

7. A cellular radio communications system according to claim 6 wherein said feature node includes said prioritized routing list, said communications link establishing means and said reprioritizing means.

8. A cellular radio communications system according to claim 5 further comprising a mobile switching center, responsive to said cellular radio network, for processing and storing data related to the subscribers of said cellular radio network.

9. A cellular radio communications system according to claim 8 wherein said mobile switching center includes said prioritized routing list, said communications link establishing means and said reprioritizing means.

10. A cellular radio communications system according to claim 1 further comprising:

a plurality of prioritized routing lists, each prioritized routing list including a listing of a plurality of telephone numbers assigned to telephones associated with the predetermined subscriber, each prioritized routing list also associated with a predetermined time period during which the prioritized routing list is effective; and

clock means for maintaining a current reference time;

wherein said communications link establishing means is responsive to both said plurality of prioritized routing lists and said clock means such that the telephones are sequentially alerted according to the prioritized routing list which is effective at the time at which the source telephone placed the telephone call.

11. A mobile telephone switching office of a cellular radio communications system for processing and storing data related to the subscribers of the cellular radio communications system, the telephone mobile switching office comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of said cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined telephone number associated with the predetermined subscriber wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber;

wherein said reprioritizing means comprises means for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber after the subscriber places a telephone call from an associated telephone such that the telephone from which the subscriber placed the telephone call is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

12. A mobile telephone switching office according to claim 11 wherein said prioritized routing list of telephone numbers includes a listing of telephone numbers ranked from a highest priority to a lowest priority, and wherein said reprioritizing means comprises ranking means for designating the telephone number assigned to the telephone from which the subscriber responded to the alert with the highest priority of the prioritized routing list and for maintaining the relative rankings of the telephone numbers assigned to the other telephones associated with the subscriber from which the subscriber did not respond to the alert.

13. A mobile telephone switching office according to claim 11 wherein said communications link establishing means comprises timer means for determining if the subscriber has responded to an alert of a first telephone associated with the subscriber within a predetermined time period such that said communications link establishing means can alert a second telephone associated with the subscriber according to said prioritized routing list if the subscriber has not responded to the alert of the first telephone.

14. A mobile telephone switching office according to claim 11 further comprising:

a plurality of prioritized routing lists, each prioritized routing list including a listing of a plurality of telephone numbers assigned to telephones associated with the predetermined subscriber, each prioritized routing list also associated with a predetermined time period during which the prioritized routing list is effective; and

clock means for maintaining a current reference time;

wherein said communications link establishing means is responsive to both said plurality of prioritized routing lists and said clock means such that the telephones are sequentially alerted according to the prioritized routing list which is effective at the time at which the source telephone placed the telephone call.

15. A feature node for providing predetermined functions to a plurality of cellular telephones of a cellular radio communications system, the feature node comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of said cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined telephone number associated with the predetermined subscriber wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber;

wherein said reprioritizing means comprises means for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber after the subscriber places a telephone call from an associated telephone such that the telephone from which the subscriber placed the telephone call is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

16. A feature node according to claim 15 wherein said prioritized routing list of telephone numbers includes a listing of telephone numbers ranked from a highest priority to a lowest priority, and wherein said reprioritizing means comprises ranking means for designating the telephone number assigned to the telephone from which the subscriber responded to the alert with the highest priority of said prioritized routing list and for maintaining the relative rankings of the telephone numbers assigned to the other telephones associated with the subscriber from which the subscriber did not respond to the alert.

17. A feature node according to claim 15 wherein said communications link establishing means comprises timer means for determining if the subscriber has responded to an alert of a first telephone associated with the subscriber within a predetermined time period such that said communications link establishing means can alert a second telephone associated with the subscriber according to said prioritized routing list if the subscriber has not responded to the alert of the first telephone.

18. A feature node according to claim 15 further comprising:

a plurality of prioritized routing lists, each prioritized routing list including a listing of a plurality of telephone numbers assigned to telephones associated with the predetermined subscriber, each prioritized routing list also associated with a predetermined time period during which the prioritized routing list is effective; and

clock means for maintaining a current reference time;

wherein said communications link establishing means is responsive to both said plurality of prioritized routing lists and said clock means such that the telephones are sequentially alerted according to the prioritized routing list which is effective at the time at which the source telephone placed the telephone call.

19. A method of sorting a prioritized routing list of telephone numbers assigned to a plurality of telephones associated with a predetermined subscriber of a cellular radio communications system, the method comprising the steps of:

sequentially alerting the telephones associated with the predetermined subscriber according to the prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reordering the prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone number of the telephone from which the subscriber responded to the alert is assigned the highest priority and will be initially alerted in response to the next telephone call placed to the predetermined telephone number associated with the subscriber;

wherein the prioritized routing list of telephone numbers includes a listing of telephone numbers ranked from a highest priority to a lowest priority, and wherein said reordering step comprises the step of designating the telephone number of a telephone associated with the subscriber from which the subscriber placed a telephone call with the highest priority and maintaining the relative rankings of the telephone numbers assigned to the other telephones associated with the subscriber from which the subscriber did not place the telephone call.

20. A method for sorting a prioritized routing list of telephone numbers according to claim 19 wherein the prioritized routing list of telephone numbers includes a listing of telephone numbers ranked from a highest priority to a lowest priority, and wherein said reordering step comprises the steps of designating the telephone number assigned to the telephone from which the subscriber responded to the alert with the highest priority of the prioritized routing list and maintaining the relative rankings of the telephone numbers assigned to the other telephones associated with the subscriber from which the subscriber did not respond to the alert.

21. A method for sorting a prioritized routing list of telephone number according to claim 19 further comprising the step of establishing a communications link between a source telephone placing a telephone call and a predetermined telephone number associated with the predetermined subscriber and the predetermined subscriber when the subscriber responds to an alert of an associated telephone.

22. A method for sorting a prioritized routing list of telephone numbers according to claim 19 wherein said step of establishing a communications link comprises the steps of:

determining if the subscriber has responded to an alert of a first telephone associated with the subscriber within a predetermined time period; and

if the subscriber has not responded to the alert of the first telephone, alerting a second telephone associated with the subscriber according to the prioritized routing list.

23. A method for sorting a prioritized routing list of telephone numbers according to claim 19 wherein the cellular radio communications system includes a plurality of prioritized routing lists, each prioritized routing list including a listing of a plurality of telephone numbers assigned to telephones associated with the predetermined subscriber, each prioritized routing list also associated with a predetermined time period during which the prioritized routing list is effective, the method further comprising the step of maintaining a current reference time.

24. A method for sorting a prioritized routing list of telephone numbers according to claim 23 wherein said sequential alerting step comprises the steps of:

determining the prioritized routing list which is effective at the time a telephone call was placed to the predetermined subscriber; and

sequentially alerting the telephone associated with the predetermined subscriber according to the effective prioritized routing list.

25. A method for sorting a prioritized routing list of telephone numbers according to claim 19 further comprising the step of determining the telephone number assigned to the telephone from which the subscriber responded to the alert.

26. A cellular radio communications system comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of the cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined one of said assigned telephone numbers wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

27. A cellular radio communications system according to claim 26 wherein said predetermined assigned telephone number is assigned to a cellular radiotelephone assigned to the predetermined subscriber.

28. A mobile telephone switching office of a cellular radio communications system for processing and storing data related to the subscribers of the cellular radio communications system, the telephone mobile switching office comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of said cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined one of said assigned telephone numbers wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

29. A mobile telephone switching office according to claim 28 wherein said predetermined assigned telephone number is assigned to a cellular radiotelephone assigned to the predetermined subscriber.

30. A feature node for providing predetermined functions to a plurality of cellular telephones of a cellular radio communications system, the feature node comprising:

a prioritized routing list of a plurality of telephone numbers wherein each telephone number is assigned to a telephone associated with a predetermined subscriber of said cellular radio communications system;

communications link establishing means, responsive to said prioritized routing list, for establishing a communications link between a source telephone placing a telephone call and a predetermined one of said assigned telephone numbers wherein said communications link establishing means sequentially alerts the telephones associated with the predetermined subscriber according to said prioritized routing list of telephone numbers associated with the predetermined subscriber; and

reprioritizing means, responsive to said communications link establishing means, for sorting said prioritized routing list of telephone numbers associated with the predetermined subscriber such that the telephone from which the subscriber responded to the alert is assigned the highest priority and is initially alerted by said communications link establishing means in response to a next telephone call placed to the predetermined telephone number associated with the subscriber.

31. A feature node according to claim 30 wherein said predetermined assigned telephone number is assigned to a cellular radiotelephone assigned to the predetermined subscriber.