What does ISDNUP stand for?

What does ISDNUP mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: ISDNUP.

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Integrated Services Digital Network User Part

Computing » Telecom

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"ISDNUP." Abbreviations.com. STANDS4 LLC, 2015. Web. 26 Jan. 2015. <http://www.abbreviations.com/ISDNUP>.

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