- telephone-type key
- ключ телефонного типа
Англо-русский железнодорожный словарь. 2013.
telephone-type key
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Telephone switchboard — PBX switchboard, 1975 A switchboard (also called a manual exchange) was a device used to connect a group of telephones manually to one another or to an outside connection, within and between telephone exchanges or private branch exchanges (PBXs) … Wikipedia
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Type-length-value — Within data communication protocols, optional information may be encoded as a type length value or TLV element inside of the protocol.The type and length fields are fixed in size (typically 1 4 bytes), and the value field is of variable size.… … Wikipedia
1A2 Key System — The 1A2 Key System is an analog multiline business key telephone system. Unlike more modern multiline systems, every telephone line serving a particular phone is wired into that phone, and electromechanical switches (the keys ) switch the lines… … Wikipedia
Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private … Wikipedia
Model 500 telephone — Western Electric model 500 set made in 1951 By 1975, the Model 500 layout … Wikipedia
