TY  - BOOK
AU  - Kessler, Gary C.
TI  - ISDN : : concepts, facilities, and services
SN  - 9780071144308
U1  - 621.382 KES 
PY  - 1997///
CY  - New York 
PB  - : McGraw-Hill
KW  - Integrated services digital networks
KW  - ISDN
KW  - Telecommunications
KW  - Gary C Kessler
KW  - Communications
ER  -