Isdn :
Kessler, Gary C.,
Isdn : Concepts, facilities, and services / Gary c. kessler - 302 páginas
0070342423
Redes digitales de servicios integrados
TK5103.7 / K47
Isdn : Concepts, facilities, and services / Gary c. kessler - 302 páginas
0070342423
Redes digitales de servicios integrados
TK5103.7 / K47