Reconnection method for communication network system

摘要

There is provided a re-connection method for a communication network system that enables a multipoint connection by which the same data is transmitted from a first subscriber (a-Sub) accommodated by a first switch (Station A) to a plurality of second subscribers (b-Sub, c-Sub) accommodated by a second switch (Station B), the method comprising the steps of: transmitting the data by the second switch (station B) to any one of the second subscribers (e.g. c-Sub) connected with the second switch; retransmission requesting by the second switch to the first switch for re-transmitting of the data to any of the second subscribers (e.g. b-Sub) which were not connected to the second switch at the time of transmitting the data; and re-connection requesting by the first switch to the second switch for re-connecting the or each non-connected second subscriber.