TY  - BOOK
AU  - Kessler, Gary C.
TI  - ISDN : concepts,facilities and services
SN  - 0-07-112662-7
U1  - 004.69 
PY  - 1990///
CY  - New York
PB  - McGraw- Hill
KW  - Computer science
KW  - Data communication
KW  - Protocol
KW  - Signaling system
N1  - Includes index; na
ER  -