Pmc-sierra, Inc.

Jeffery John Brown

John Richard Bradshaw

Jonathan David Loewen

A method or system or apparatus provides improved digital communication. In one aspect, flow control in performed by receiving status preprended to data units in a combined data channel, where the status data indicated the available status of a number of far end receiving channels. Thus data may be sent only to available receiving channels. In a further aspect, a frequency reference may also be transmitted by including data in data units in a combined channel. In a further aspect, an active channel can be selected among two redundant channels by use of an active bit in said data units. The invention has particular applications to ATM-type communication systems and may also be used in other communication systems.

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Maple Ridge, Canada

Jeffery John Brown