CELL PROCESSING SYSTEM FOR ATM CHANNEL INTERFACE

摘要

PROBLEM TO BE SOLVED: To obtain the system with high maintenance performance through an efficient configuration with a smaller size and offering simple test and inspection by providing plural cell processing sections each having a single cell processing function throughout a channel. SOLUTION: A signal inserted from a subscriber channel is converted into a desired electric signal by a physical termination section 60 and given to a frame termination section 61, in which frame synchronization and section overhead processing and pass overhead processing are conducted. Furthermore, a cell processing section 62 conducts header synchronization and cell assembling the signal is converted into a cell format and physical layer processing is terminated. An alarm cell extract/monitor section 63 inserts an alarm cell and sets a Y bit flag. Thus, cells are processed as if they were passed through an MC extract/monitor section 64, an OAM cell processing section 67, a UPC section 13, a charging processing section 14 and an MC insert section 68 and inserted by an alarm cell insert section 69.