At&t Intellectual Property I, LP

At+t Corp.

At&t Bell Laboratories

Richard Alan Farel

Jeffrey Stein

Hossein Eslambolchi

Paritosh Bajpay

David H Lu

John McCanuel

Kathleen S Meier-Hellstern

William J Leighton, Iii

Paul Reeser

Li-Jin Wu Chung

Zhijian Xu

Alek Remash

Kenichi Futumura

Mehdi Hosseini-Nasab

Anestis Karasaridis

Varsha Arvind Mainkar

Mohan Gawande

Yu-Lein Kung

James Anthony Schmitt

Arunabha Guha

Ching-Chyuan Shieh

Li-Jun W Chung

Richard Oppenheim

The present disclosure is directed to a method and system for automatic triggering network management (NM) control for Voice-Over-IP (VoIP) border elements (BE). The method detects call storm events by monitoring blocked call error messages and maintaining counts according to telephone number based control strings, and controls call storm events by limiting the admitted call rate for calls matching a control string according to an adaptive leaky bucket control. The control drain rate is updated periodically based on a calculated successful call rate and is set to somewhat exceed the successful rate. A control is automatically removed when no blocked calls are observed for a specific number of consecutive windows.

Method and system for automatic triggering network management control for VoIP border elements

A method and apparatus that employ the use of CDRs to effectively monitor and proactively respond to network or service events that impact performance within a network are disclosed. For example, the method receives a plurality of call detail records (CDRs), wherein each of the plurality of call detail records comprises a plurality of fields. The method determines a n-field rule signature from each of the call detail records (CDRs), and analyzes the n-field rule signatures from the plurality of call detail records (CDRs) for detecting at least one network performance problem.

Method and apparatus for detecting network and service performance degradations using call detail records

A method and system of processing call detail records (CDRs) of multiple network elements in a communication network are disclosed. The method includes identifying at least one final attempt CDR out a plurality of CDRs from the multiple network elements by at least one type of network element. At least one master CDR is built from the identified at least one final attempt CDR. Further, at least one CDR from the plurality of CDRs is correlated to the at least one master CDR according to a correlation rule. Also, the at least one master CDR is then augmented with CDR data from the at least one correlated CDR.

VoIP master call detail record

An arrangement analyzes a plurality of call detail records and determines that a particular call processing code has occurred a predetermined number of times during a previously defined time interval. The fact of these multiple occurrences of these processing codes is determined to be an indication of a trunk failure. A maintenance request is issued to address the detected failure.

Method for providing predictive maintenance relating to trunk operations in a VoIP network

An arrangement analyzes a plurality of call detail records from multiple sources and find those records related to multiple attempts to set up a particular user's call(s). The call detail records are filtered to establish an understanding of fault location likely to be responsible for what is deemed to be a defective call.

Method for providing detection of fault location for defect calls in a VoIP network

A system and method for identifying computer system performance signatures and for identifying the cause of undesirable performance signatures, particularly with respect to both application-based and computer system-based parameters. Respective parametric information data is matched with corresponding parameters found in a stored plurality of reference signatures. If a match is found between the behavior of a computer system under study and a reference signature, the present invention provides information about the cause(s) of the reference signature, such that appropriate remedial measures can be taken. If a match is not found (according to predetermined matching rules), then the present invention may provide additional prompts to request additional information or test data such that the signature of computer system being tested can be further refined so that the signature of the target computer system might more closely match a reference signature.

System and method for diagnosing computer system operational behavior

This invention relates to a method and apparatus for throttling request messages to an overloaded database and for throttling overload traffic to a particular destination. The database sends a gap value to the sources of messages or traffic; following any message or call to the destination, no messages will be sent or calls to the destination completed for one gap interval. In a departure from the prior art, the gap interval, a function of the number of request messages flushed or overload calls to the destination is not recurrently calculated anew, but is instead recurrently adjusted from its previous value. Advantageously, this arrangement permits a relatively stable value of the gap to be maintained and reduces overhead for preliminary processing of request messages that cannot be handled.

Control of overload in communications networks

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Englishtown, NJ, United States of America

Richard Alan Farel