Ursel Willrett

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Method and arrangement for netwide call trace in a...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Reexamination Certificate

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Method and device for measuring the transmission quality in...

Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate

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Test method as well as a converter, a test set, and a test-progr

Patent

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Profile ID: LFUS-PAI-P-778524

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