STM-16 network-node interface in an ATM switch and the fault dia

Details STM-16 network-node interface in an ATM switch and the fault dia STM-16 network-node interface in an ATM switch and the fault dia

1997-11-10

2000-06-27

Olms, Douglas W.

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

370242, 370395, H04J 1256

Patent

active

060815353

ABSTRACT:
The invention is to provide an STM-16 Network-Node Interface(NNI) which is capable of exactly checking whether a fault is generated on any station when the VC-4 AU received from a remotely located station has the fault, by checking the incoming data streams and communication with the remote node using the still unused values of APS bytes, thereby further enhancing the reliability thereof, which comprising duplicate physical layer processing blocks for processing a physical layer to provide a plurality of simplex ATM layers, and an ATM layer controller for controlling the processing condition of each of the ATM layers processed by the ATM layer processing means, to thereby processed information to the microprocessor; and ATM layer processing block for processing the ATM layers to a plurality of ATM cells.

REFERENCES:
patent: 5204857 (1993-04-01), Obara
patent: 5341376 (1994-08-01), Yamashita
patent: 5359600 (1994-10-01), Ueda et al.
patent: 5857092 (1999-11-01), Nakamura et al.
Leo Nederlof et al., "A NEw Distributed Restoration Algorithm to Protect ATM Meshed Networks against Link and Node failures", International Switching Symposium, Apr. 1995, vol. 2, pp. 398-402.
B. Edmaier et al., "Alignment Server for Hitless Path-Switching in ATM Networks", International Switching Symposium, Apr. 1995, vol. 2, pp. 403-407.

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