Pulse or digital communications – Testing
Patent
1998-02-13
2000-06-27
Chin, Stephen
Pulse or digital communications
Testing
375376, 370248, H04B 346
Patent
active
060815507
ABSTRACT:
The indicated test method makes it possible to test clock paths via which a reference clock is transmitted to synchronize network elements in a synchronous digital telecommunications system. To that end the reference clock is marked at the start of the clock path being tested by modulating information thereon. It is observed at the end of the clock path being tested whether the reference clock contains the information modulated thereon at the start. This information is configured so that it does not impair the operation of the synchronous digital telecommunications system. A network element is furthermore indicated, which is in a position to produce by itself the phase modulation required for a test, through its clock generator.
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patent: 5271035 (1993-12-01), Cole et al.
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patent: 5627500 (1997-05-01), Wolaver et al.
patent: 5943382 (1999-08-01), Li et al.
"Measurement Tasks on SDH transmission systems" by R. Kiefer, 1993 ntz vol. 46, issue 2, pp. 92-96 (Article in German).
Alcatel
Chin Stephen
Jiang Lenny
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