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Num Mark Subjects (1-5 of 5) Year Entries
10 Found
1 Digital telephone systems.   6
2 Digital telephone systems -- Automation : Computer telephony integration / Rob Walters  1999 1
3 Digital telephone systems -- Congresses. : Data communications in the ISDN era : proceedings of the IFIP TC6 First International Conference on Data Communications in the ISDN Era, Tel-Aviv, Israel, 4-5 March, 1985 / edited by Y. Perry  1985 1
4 Digital telephone systems -- Periodicals. : Annual report / Spectrum Network Systems Limited    1
5 Digital telephone systems -- Security measures. : 60 Minutes: The Wooley Mammoth/The Golden Girl/Special Investigation: Bugged, Tracked, Hacked  2015 1
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