книги Наука, техника, медицина Гуманитарные науки Филология Языкознание

Dual-tone multi-frequency signaling

Код 3316741

  • ISBN: 978-5-5147-9916-9

Нет в продаже

Аннотация к книге "Dual-tone multi-frequency signaling"

High Quality Content by WIKIPEDIA articles! Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. The version of DTMF that is used in push-button telephones for tone dialing is known as Touch-Tone. It was developed by Western Electric and first used by the Bell System in commerce, using that name as a registered trademark. DTMF is standardized by ITU-T Recommendation Q.23. It is also known in the UK as MF4.

Оставить комментарий

Оцените книгу:

ISBN: 978-5-5147-9916-9

Книга находится в категориях

Машиностроение

Вместе с этой книгой покупают

Просмотренные товары