ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,659, issued on Nov. 25, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Tracking in-service IP phones using machine learning" was invented by Kashif Khawaja (Dhahran, Saudi Arabia) and Irslan Siddiq (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of determining whether an end user device coupled to a voice over Internet Protocol (VOIP) network is online or offline assembling source data from a variety of network monitoring devices and services including at least one selected from the group consisting of: of asset inventories, VoIP Call Control Servers, routers, firewalls, and intrusion protection sy...