| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device monitoring a communication terminal by providing current time query function that is already known in the communication terminal and monitoring control in a time server, without adding exclusive control function associated with terminal monitoring in the communication terminal to be monitored. <P>SOLUTION: When communication terminals 300 to 302 do not make a current time query periodically to an NTP monitoring device 100, the NTP monitoring device 100 determines that the communication terminal misses the query and makes a query missing notification to a control center 400. <P>COPYRIGHT: (C)2012,JPO&INPIT |
