Primary speed interface device of medium capacity private exchange for integrated information network

摘要

The present invention relates to a trunk connection apparatus for providing connection with a public exchange in a medium capacity private branch exchange for an integrated information communication network, and more particularly to a primary rate interface apparatus in which a 2.04MBPS connection with a public exchange for a public information network Which has a 32-channel frame structure and has layer 1, layer 2, layer 3, and operating system software, it is possible to perform a call function with a subscriber through an interface with a data distribution board and a data switch board It is effective.