System and method for classifying and processing voice over IP traffic

JP7863567B2Active Publication Date: 2026-05-21SANDVINE CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SANDVINE CORP
Filing Date
2021-09-29
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing systems struggle to accurately classify and process encrypted Voice over Internet Protocol (VoIP) traffic, limiting network operators' ability to manage congestion, ensure quality of experience, and perform billing and charging services, as metadata such as IP addresses and server names are often unavailable in encrypted traffic.

Method used

A system and method that collects traffic flow data, determines VoIP sessions through parameter correlation, and generates Internet Protocol Detail Records (IPDRs) or Call Detail Records (CDRs) by integrating raw data, using machine learning and heuristics to analyze encrypted VoIP traffic, even when IP sessions originate from different jurisdictions.

Benefits of technology

Enables accurate identification of VoIP sessions, providing detailed call records that include both parties' details, locations, and call attributes, enhancing network management and supporting law enforcement by correlating and visualizing data to generate useful intelligence.

✦ Generated by Eureka AI based on patent content.

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Abstract

A system and method for processing Voice over Internet Protocol (VoIP) traffic flows, particularly encrypted VoIP traffic flows, on a computer network. The method includes collecting traffic flow data for IP sessions, collecting parameters associated with the IP sessions, determining whether the IP sessions are VoIP sessions, correlating IP sessions having similar parameters with the collected parameters, and creating at least one Internet Protocol Detail Record (IPDR) or Call Detail Record (CDR) based on the correlated IP sessions. The system includes a collection module configured to collect traffic flow data, an analysis module configured to determine the parameters and determine whether the IP sessions are VoIP sessions, and a correlation module configured to correlate IP sessions having similar parameters and create at least one Internet Protocol Detail Record (IPDR) or Call Detail Record (CDR) based on the correlated IP sessions.
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