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What Is ISDN? The Integrated Services Digital Network Explained
What Is ISDN? The Integrated Services Digital Network Explained
What is ISDN? What are its Advantages? (Updated)
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Engineering Networks for Synchronization, Ccs7, and Isdn: Bhatnagar, P. K.: 9780780311589: Amazon.com: Books
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Isdn: Concepts, Facilities, and Services (McGraw-Hill Series on Computer Communications): Kessler, Gary C., Southwick, Peter V.: 9780070342491: Amazon.com: Books
ISDN
