ISDN and Broadband ISDN with Frame Relay and ATM (3rd edition) by William Stallings (Prentice Hall PTR)
ISDN: How to Get a High Speed Connection to the Internet by Charles Summers and Bryant Dunetz (Wiley )
Special Edition Using ISDN by James Y. Bryce (Que )
William Stallings: ISDN and Broadband ISDN with Frame Relay and ATM (3rd edition) (Prentice Hall PTR)
Charles Summers and Bryant Dunetz: ISDN (John Wiley & Sons )
Charles Summers and Bryant Dunetz: ISDN: How to Get a High Speed Connection to the Internet (Wiley )