ISDN /ˌaɪ es diː ˈen/ BrE AmE noun [uncountable]
(Integrated Services Digital Network) a system that is used to send computer information at very high speed along an electronic wire similar to a telephone line
ISDN /ˌaɪ es diː ˈen/ BrE AmE noun [uncountable]
(Integrated Services Digital Network) a system that is used to send computer information at very high speed along an electronic wire similar to a telephone line
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012