Ｂ－ＩＳＤＮalso: ビーアイエスディーエヌMeanings1nounbroadband ISDN; B-ISDNtelecommunicationsTechnical term in telecommunications for a high-speed version of ISDN.Ｂ－ＩＳＤＮは、従じゅう来らいのＩＳＤＮより高こう速そくな通つう信しんを提てい供きょうする。B-ISDN provides higher-speed communication than conventional ISDN.
