| 摘要 |
An optical cross-connect switch ( 12 ) includes and optical matrix 14 for passing optical communication data between an origination I/O port ( 20 ) and a destination I/O port ( 22 ). Control information is passes between the origination I/O port ( 20 ) and the destination I/O port ( 22 ) in transport frames 24 . The transport frames include multiple framing bytes indicative of the start of a frame ( 24 ) and stuff bytes at regular intervals to ensure adequate bit transitions in the control information data stream. Payload bytes carrying control information are positioned between stuff bytes. The stuff bytes have different bit values from the framing bytes in multiple bit positions to allow false framing only if there are multiple bit errors in the stuff frame.
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