Atm transmission equipment

Details Atm transmission equipment Atm transmission equipment

H - Electricity

04

L

H04L 12/56 (2006.01)

Patent

CA 2268563

ATM transmission equipment that, provided between existing exchange or terminals of carrier equipment, etc., can emulate existing transmission paths, and also implement T point interfaces for in-home unit. An ATM network is provided between LT unit constituting existing equipment connected to existing STM lines such as high-speed digital lines or ISDN lines, on the one hand, and DSUs installed on the subscriber ends, ATM transmission equipment is installed between the LT unit and the ATM network, and ATM transmission equipment is installed between the ATM network and the DSUs. The ATM transmission equipment detects communication anomalies or extracts maintenance/operational information from data strings on the STM lines, replaces only the necessary information resulting from those extractions or detections with alarm signals, and transmits those signals together with information channels to the ATM network via cell assembler/disassember. The information channels and alarm information that arrive from the ATM network and are subjected to cell disassembly are rearranged into STM line data strings and output to the LT unit, DSUs, or terminals.

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