JPS6418392A - Multiple loop system for integrated communication system - Google Patents

Abstract

PURPOSE:To realize a multimedia communication by the same system and economize the system, and to share facilities by enabling a signal train on an optical loop made periodic to contain both the asynchronizing signal of a packet signal and the synchronizing signal of a line signal. CONSTITUTION:When a communication between nodes is made by using the packet signal, information from a node among nodes 7-9 is sent to an optical loop 1 or 2 through optical loop switches 3-5 and a master module 6. In this case, the transmission delay on the optical loop is set to an integral multiple of a master frame through a period counter, etc., in the module 6, and the information is sent out to the optical loop to make the communication. Further, when a communication between nodes is made by using a line signal, the line signal is sent out to a corresponding optical loop through an assigning means in the module 6, time switch control circuits in the nodes, etc., to make the communication. Consequently, the signal train on the optical loop can contains both the asynchronizing signal of the packet signal and the synchronizing signal of the line signal and the multimedia communication is realized by the same system; and the system is economized and the facilities can be shared.