| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a network monitoring device that can precisely detect abnormalities in communication to identify their causes in a communication network with no high processing capacity. <P>SOLUTION: A network monitoring device counts the number of calls based on a duplicated packet of a packet transmitted and received via a communication network, calculates a call connection response time based on the duplicated packet, and determines generation of abnormalities in communication based on the number of calls and the call connection response time. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
