Automatic protection switching system for ATM exchange network

摘要: An ATM exchange network system in which a first equipment and second are connected through duplex communication line comprising working protection line. In this system, each of the provides: bridging unit bridges on transmission side; switch for selecting or reception K-byte generating function byte information containing realizing APS; receiving K from line, analyzing received information, placing prescribed changing over switch. Thus, reliability with respect to failure can be improved.