ISDN and Broadband ISDN: Stallings, William: 9780024154750: Amazon.com: Books
ISDN Design: A Practical Approach: Hardwick, Steve: 9780124337589: Amazon.com: Books
ISDN Applications in Education and Training (Telecommunications): Mason, Robin, Bacsich, Paul: 9780852968604: Amazon.com: Books
Isdn, Decnet, and Sna Communications: Bartee, Thomas: 9780672225123: Amazon.com: Books
Isdn: Concepts, Facilities, and Services (McGraw-Hill Series on Computer Communications): Kessler, Gary C., Southwick, Peter V.: 9780070342491: Amazon.com: Books