Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Patent
1996-07-16
1999-02-09
Pham, Chi H.
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
370217, 370219, 370228, 34082501, 340827, A04J 116, H04L 100, H04B 338
Patent
active
058703829
ABSTRACT:
An ATM exchange network system in which a first equipment and a second equipment are connected through a duplex communication line comprising a working line and a protection line. In this system, each of the first equipment and second equipment provides: a bridging unit which bridges the working line and the protection line on the transmission side; a switch for selecting the working line or the protection line on the reception side; a K-byte generating function for generating byte information containing information for realizing the APS; a function of receiving the K byte information from the protection line, analyzing the received information, placing the prescribed information in the K byte and realizing the APS; and a function of changing over the switch. Thus, the reliability with respect to a line failure in the ATM exchange network can be improved.
REFERENCES:
patent: 5285441 (1994-02-01), Bansal et al.
patent: 5315581 (1994-05-01), Nakano et al.
patent: 5627822 (1997-05-01), Edmaier et al.
patent: 5663949 (1997-09-01), Ishibashi et al.
Karakawa Yoshiyuki
Tounai Shunichi
Baker W. Todd
Fujitsu Limited
Pham Chi H.
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