| Subject | English | Bulgarian |
| comp., MS | Broadband Integrated Services Digital Network An International Telecommunication Union - Telecommunication [Standardization Sector] (ITU-T) communication standard for high-speed networking that provides new services, including voice, video, and data on the same network | широколентова цифрова мрежа с интегрирани услуги (B-ISDN) |
| work.fl., IT | European digital library network | eвропейска цифрова библиотека |
| commun. | integrated service digital network | цифрова мрежа с интегрирани услуги |
| comp., MS | Integrated Services Digital Network | цифрова мрежа за интегрирани услуги (A high-speed digital technology that uses existing telephone lines to provide Internet access) |