Patent ID: 6081535
Filing Date: 2000-06-27
Classification: H04J

Abstract:
An STM-16 Network-Node Interface for data communicating between a remotely located destination station and a local station, which comprises:a duplicate physical layer processing means for processing an STM-16 frame signal inputted through one of a plurality of relay links to provide a plurality of Asynchronous Transfer Mode (ATM) layers; anda simplex ATM layer processing means for processing the plurality of ATM layers inputted thereto from the physical layer processing means to form a plurality of ATM cells;wherein said physical layer processing means includes:a converting means for converting the STM-16 frame signal inputted thereto from the destination station in an optical form through one of the relay links into digital electric signal;an STM-16 frame terminal means, which is connected to the converting means, for receiving the converted STM-16 frame, and demultiplexing the same into 16 VC (virtual channel)4 administrative unit groups;a buffer means, which disables when the duplicate physical layer processing means is acting as a protective physical layer processor, for selecting the 16 VC-4 administrative unit groups outputted from the STM-16 frame terminal means, and for temporally storing the same, when the duplicate physical layer processing means is acting as a working physical layer processor, and in response to a control signal provided from a microprocessor, for delivering the same to each ATM layer processor within the ATM layer processing means; anda fault diagnosing means, in response to a fault diagnosing requirement signal provided from the microprocessor, for selecting a VC-4 administrative unit group with a fault when the fault has occurred on a transmitted signal and performing a fault diagnostic process on the selected VC-4 administrative unit group.