- key-telephone unit
- кнопочный ТФА
English-Russian dictionary of telecommunications and their abbreviations. A.V. Alexandrov.. 2004.
key-telephone unit
Смотреть что такое "key-telephone unit" в других словарях:
key service unit — (KSU) The main operating unit of a key telephone system … IT glossary of terms, acronyms and abbreviations
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