ISDN access的相關(guān)資料：
臨近單詞
ISDN
ISDN interworking unit port
ISDN remote subscriber unit
ISDN Digital Subscriber Line
ISDN Terminal Adapter Circuit
ISDN user-network interface
ISDN BRP Bandwidth Request PDU
ISDN user preference indicator
ISDN digital subscriber line ISDN
ISDN OSI Open System Interconnection
ISDN network layer interface protocol
