Excavating
Patent
1990-03-22
1992-09-29
Smith, Jerry
Excavating
371 201, G06F 1100
Patent
active
051519020
ABSTRACT:
Method for quality monitoring of at least two series connected transmission sections in a digital signal transmission link for digital equipment conforming to the synchronous digital hierarchy. Error message bytes in which parity errors are accumulated are transmitted in the section overhead of synchronous transport modules as special bytes for the accumulation of parity errors in successive transmission sections. A quality criterion for the monitored transmission link is acquired from a sequence of error message bytes. The method and the apparatus are advantageously used in transmission equipment of digital synchronous hierarchy.
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CCITT-recommendations G707-G709, 1988.
Telcom report, special. vol. 10, Dec. 1987, Multiplexing Line Transmission, pp. 107-112.
Chung Phung My
Siemens Aktiengesellschaft
Smith Jerry
LandOfFree
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