Patent · US Active

Malicious call detection apparatus, malicious call detecting method and computer program for detecting malicious calls

US9338196B2 · kind B2 · utility

0Cited by

3References

5Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Anand Raghawa Prasad · Tokyo, JP
Thilo Ewald · Heidelberg, DE
Toshiyuki Tamura · Tokyo, JP
Stefan Schmid · Waiblingen, DE

Key dates

Filing date	Apr 28, 2010
Grant date	May 10, 2016
Priority date	—
Expiry date	Jun 24, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2242/14
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

To improve detection accuracy of SPIT, first, an identification information gathering apparatus receives various identification information from an IP phone terminal which has transmitted an INVITE message. A PUCI server generates bind identification information by binding or associating various identification information received from an identification information gathering apparatus via an SIP server and registers the bind identification information to a gray list stored in a list storing portion. A SPIT determination portion evaluates the bind identification information in reference to the gray list and determines whether or not the session start request from the IP phone terminal is allowed.

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