Multiplex communications – Wide area network – Packet switching
Patent
1992-06-02
1993-11-23
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 582, 370 60, 3701101, H04J 326
Patent
active
052650880
ABSTRACT:
A cross-connection apparatus for B-ISDN includes plural interface units, multiplexers, virtual path identifier (VPI) conversion tables, demultiplexers, and loop-back units and a switch unit. The interface unit has a reception port for receiving an ATM cell or inserting a monitor cell, and a transmission port for transferring the ATM cell or extracting the monitor cell; The multiplexer is operatively connected to corresponding interface unit for multiplexing the monitor cell; The VPI conversion tables is operatively connected to corresponding multiplexer for converting the VPI to change a transmission route of the monitor cell; The switch unit is operatively connected to the VPI conversion tables for switching the transmission route of the monitor cell based on the VPI; The demultiplexer is operatively connected to the switch unit for demultiplexing the monitor cell and transferring the monitor cell to the transmission port; The loop-back unit is operatively connected to corresponding interface unit for changing the transmission route so as to transfer the monitor cell to the same interface unit which the monitor cell is inserted, and as a result, the apparatus can be monitored by comparing the inserted monitor cell with the extracted monitor cell in the same interface unit.
REFERENCES:
patent: 4551830 (1985-11-01), Huffman
patent: 5177736 (1993-01-01), Tanabe et al.
Sakauchi et al., "A Network Restoration Scheme for ATM Cross-connect Systems," C&C Systems Research Labs. NEC Corporation, CS90-60, pp. 43-48.
Kawai Masaaki
Naito Hidetoshi
Tajima Kazuyuki
Takigawa Yuji
Watanabe Hisako
Fujitsu Limited
Marcelo Melvin
Nippon Telegraph and Telephone Corporation
Olms Douglas W.
LandOfFree
Cross-connection apparatus for B-ISDN does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cross-connection apparatus for B-ISDN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-connection apparatus for B-ISDN will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1855369