TY  - BOOK
AU  - Saltzberg,Burton R.
AU  - Verma,Pramode K.
TI  - ISDN systems: architecture, technology, and applications 
SN  - 0135057361
PY  - 1990///
CY  - Englewood Cliffs, N.J. : 
PB  - Prentice Hall, 
KW  - Integrated services digital networks
N1  - Includes bibliographical references and index
ER  -