Patent · US Active

Method for identifying undesired telephone calls

US8005074B2 · kind B2 · utility

7Cited by

2References

20Claims

0Family size

Assignee

NEC EUROPE LTD. · DE

Inventors

Sandra Tartarelli · Heidelberg, DE
Roman Schlegel · Wettingen, CH
Saverio Niccolini · Heidelberg, DE
Marcus Brunner · Wuppertal, DE

Key dates

Filing date	May 18, 2007
Grant date	Aug 23, 2011
Priority date	—
Expiry date	Oct 23, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2201/18
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for identifying undesired telephone calls (Spit/Spam over IP), preferably in a VoIP network, in which the telephone calls coming in for a telephone subscriber, the callee, from at least one calling telephone subscriber, the caller, are subjected to a test or more precisely to a statistical analysis. The method is developed in such a manner that in the framework of the test for incoming calls, the time of the receipt of each call is determined and in each case the probability that the call is undesired is determined, where for the calculation of the probability the time of the receipt of the call, or a parameter dependent thereon, is related to the temporal distribution of previous undesired calls.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.