Call monitoring system for intelligent call processing

• US 5,448,632 A
• Filed: 10/27/1993
• Issued: 09/05/1995
• Est. Priority Date: 10/27/1993
• Status: Expired due to Term

• Current Assignee: AT&T IPM Corp. (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Noll, Paul R., Wilkinson, Alex C., Iyob, Hannibal, Tamkin, Ronald W., Kaish, Steven T., Rao, V. R. Gopala
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): Wolinsky, Scott
• Application Number:
  US08/144,067
• Time in Patent Office: 678 Days
• Field of Search: 379/67, 379/88, 379/89, 379/201, 379/207, 379/211, 379/220, 379/230, 379/242, 379/265, 379/266, 379/113, 379/115, 379/134, 379/142, 379/112, 379/97, 379/127, 379/93, 379/94 , 379/100, 379/244, 379/245, 379/216, 379/229, 379/212
• US Class Current: 379/230
• CPC Class Codes: H04M 3/08 Indicating faults in circuits or apparatus
• CPC Class Codes: H04M 3/2254 in networks
• CPC Class Codes: H04M 3/36 Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
• CPC Class Codes: H04M 3/4228 in networks
• CPC Class Codes: H04Q 1/20 Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
• CPC Class Codes: H04Q 2213/13541 routing
• CPC Class Codes: H04Q 2213/13545 monitoring of signaling messages, intelligent network
• CPC Class Codes: H04Q 2213/13547 subscriber, e.g. profile, database, database access
• CPC Class Codes: H04Q 3/0029 Provisions for intelligent networking

Abstract

Increased reliability for intelligent call processing systems is provided by collecting information from communications between the network database, the subscriber database, and the network switch. Message transfers between these network elements are monitored and correlated to identify those messages corresponding to a particular call. The messages for the call are analyzed to determine which database generated the instructions for routing the call. In particular, by comparing the routing number returned to the interexchange switch with the routing instruction information supplied by the subscriber'"'"'s database, it can be determined whether the call was routed according to instructions from the subscriber'"'"'s database.

Claims

1. A method for use in a telecommunications system which routes special service calls according to routing instructions obtained from a subscriber database, the method comprising the steps of:

determining the routing instructions output by the subscriber database for a special service call;

comparing the routing instructions output by the subscriber database with the routing instructions actually used to route the special service call; and

responding to the result of the comparing step to provide an indication of whether the special service call was routed according to the routing instructions output by the subscriber database.

2. The invention of claim 1 wherein the comparing step comprises comparing a routing label output by the subscriber database for routing the special service call with the routing number used to route the special service call.

3. The invention of claim 1 wherein the responding step comprises generating an indication that the special service call was routed using a default routing instruction.

4. The invention of claim 1 further comprising the step of providing an indication of why the special service call was not routed according to the routing instructions output by the subscriber database.

5. The invention of claim 1 further comprising the step of determining the elapsed time between initiation of a query for routing instructions of the subscriber database by a network processor and receipt by the network processor of a response to the query.

6. A method for use in an intelligent call processing system, the method comprising the steps of:

monitoring message transfers between a network special service call database, a subscriber database, and a network switch;

correlating messages corresponding to a predetermined special service call; and

analyzing selected information derived from the messages of the predetermined special service call to determine whether the special service call was routed according to routing instructions specified by the subscriber database.

7. The invention of claim 6 wherein the correlating step comprises identifying messages corresponding to the special service call on the basis of an identifier unique to the special service call.

8. The invention of claim 6 wherein the selected information includes a routing label specified by the subscriber database and a routing number specified by the network special service call database.

9. The method of claim 6 wherein the selected information comprises billing record information which indicates how the special service call was routed.

10. The invention of claim 6 further comprising the step of generating an indication of whether the special service call was routed according to routing instructions specified by the subscriber database.

11. The invention of claim 10 wherein the generating step comprises generating an indication that the special service call was routed using a default routing instruction.

12. The invention of claim 10 further comprising the step of providing an indication of why the special service call was not routed according to the routing instructions output by the subscriber database.

13. The invention of claim 6 further comprising the step of correlating the results of the analyzing step with non-routing information.

14. The invention of claim 13 wherein the correlating step comprises determining on a caller-by-caller basis whether the special service call was routed according to routing instructions specified by the subscriber database.

15. A method for use in an intelligent call processing system, the method comprising the steps of:

monitoring messages received by a network special service call database from a network switch and from a subscriber database;

correlating messages corresponding to a predetermined special service call; and

analyzing selected information derived from the messages of the predetermined special service call to determine whether the special service call was routed according to routing instructions specified by the subscriber database.

16. The invention of claim 15 wherein the correlating step comprises identifying messages corresponding to the special service call on the basis of an identifier unique to the special service call.

17. The invention of claim 15 wherein the selected information includes a routing label specified by the subscriber database and a routing number specified by the network special service call database.

18. The method of claim 15 wherein the predetermined information comprises billing record information which indicates how the special service call was routed.

19. The invention of claim 15 further comprising the step of determining the elapsed time between initiation of a query for routing instructions of the subscriber database by a network processor and receipt by the network processor of a response to the query.

20. The invention of claim 15 further comprising the step of generating an indication of whether the special service call was routed according to routing instructions specified by the subscriber database.

21. The invention of claim 20 wherein the generating step comprises generating an indication that the special service call was routed using a default routing instruction.

22. The invention of claim 20 further comprising the step of providing an indication of why the special service call was not routed according to the routing instructions output by the subscriber database.

23. The invention of claim 15 further comprising the step of correlating the results of the analyzing step with non-routing information.

24. The invention of claim 23 wherein the correlating step comprises determining on a caller-by-caller basis whether the special service call was routed according to routing instructions specified by the subscriber database.