TY  - GEN
AU  - KESSLER, GARY C.
TI  - ISDN : : CONCEPTS, FACILITIES, AND SERVICES/ 
T2  - MCGRAW-HILL SERIES ON COMPUTER  COMMUNICATIONS
SN  - 0-07-034247-4
U1  - 621.382 K47 
PY  - 1993///
CY  - NEW YORK: 
PB  - MCGRAW-HILL
KW  - 1.RED DIGITAL DE SERVICIOS INTEGRADOS
N1  - INCLUYE INDICE
ER  -