Multiplex communications – Fault recovery – Bypass an inoperative station
Patent
1996-04-03
1998-09-08
Nguyen, Chau
Multiplex communications
Fault recovery
Bypass an inoperative station
370397, 370446, 370539, H04J 326
Patent
active
058055681
ABSTRACT:
In an add/drop multiplexing apparatus, a fixed length cell such as an ATM cell can be handled in addition to the existing data services. The add/drop multiplexing apparatus for supporting a fixed length cell is comprised of: an input unit for inputting multiplexed signals transmitted over a transmission path; a cross-connect unit for deriving a preset time slot signal from the multiplexed signals inputted by the input unit; and a tributary interface unit for converting the signal derived by the cross-connect unit into a signal having such a format corresponding to a low-ordered communication network. The tributary interface unit converts a fixed length cell received from the low-ordered communication network into a signal format processable by the cross-connect unit, and also converts the signal outputted from the cross-connect unit into a fixed length cell so as to be transmitted to the low-ordered communication network.
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Fujitsu Limited
Nguyen Chau
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