Multiplex communications – Wide area network – Packet switching
Patent
1995-05-11
1997-04-15
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
3701001, 371 682, 340827, H04L 122
Patent
active
056217226
ABSTRACT:
Within a cell-oriented communication network (ATMN), a message cell stream supplied to a switching equipment (CCa) located at the start of a path pair is duplicated by the switching equipment in response to a request. The two message cell streams resulting therefrom are supplied to a central synchronization device (AS) allocated to the switching equipment (CCb) located at the end of the path pair, being supplied thereto separately via an active path (AP) and via an alternate path (EP) allocated thereto. In the synchronization means, a synchronization of the two message cell streams ensues, while the message cell stream of the active path is being initially forwarded. After this, only the message cell stream of the alternate path is forwarded, upon disconnection of the central synchronization means from the transmission path.
REFERENCES:
patent: 5408463 (1995-04-01), Merchant et al.
patent: 5448573 (1995-09-01), Yamaguchi
patent: 5452286 (1995-09-01), Kitayama
patent: 5479396 (1995-12-01), Kusano
"Hitless Line Protection Switching Method for ATM Networks", H. Ohta et al, IEEE International Conference on Communications ICC (1993), pp. 272-276.
Edmaier Bernhard
Fischer Wolfgang
Safourek Benedict V.
Siemens Aktiengesellschaft
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