Patent ID: 11929791
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A communication system comprising:
a plurality of terminal stations each having a function of feeding power to a power feeding path;
a branching circuit configured to perform switching of a power feeding route including the power feeding path; and
a monitoring device configured to compare, in response to any of the plurality of terminal stations transmitting, to the branching circuit, a switching signal specifying a power feeding route, a power feeding voltage to the power feeding path being observed by each of the plurality of terminal stations at a time before transmission of the switching signal and at a time after transmission of the switching signal, and determine, with a fact that the compared power feeding voltage fluctuates by a first threshold value or more, a switching result of the power feeding route in the branching circuit,
wherein the first threshold value differs for each power feeding path of a terminal station constituting the specified power feeding route.