a permanent link of both or all of them to the same third person by a control relationship

The idea of flow control on the control link was suggested.

2a2 The status of a control link may be active or inactive 2a2a The status of the control link should reflect the relationship between the HOSTs.

The present invention provides an intelligent substation network sampling and control link self-diagnosis method.

each pair of HOSTs has been designated as the control link.

a permanent link of both or all of them to the same person by a control relationship;

the fact that both or all are permanently linked to one and the same third person by a control relationship;