Isdn: Concepts, Facilities, and Services (McGraw-Hill Series on Computer Communications): Kessler, Gary C., Southwick, Peter V.: 9780070342491: Amazon.com: Books
ISDN and Broadband ISDN with Frame Relay and ATM, 4th Edition : William Stallings: Everything Else - Amazon.com
Amazon.com: ADTRAN Atlas 550 Bundle for isdn Video Apps 2 T1/pri 1 Quad Bri : Electronics
Using Isdn: James Y. Bryce: 9780789704054: Amazon.com: Books
ISDN Integrated Services Digital Network A Clear and Concise Reference: Gerardus Blokdyk: 9780655500872: Amazon.com: Books
Amazon.com: ADTRAN ISU 2 X 64 (U Interface) Standalone ISDN Bri Ta : Electronics
ISDN: Concepts, Facilities, and Services (McGraw-Hill Communication Series): Kessler, Gary C.: 9780070342422: Amazon.com: Books