Telephone substation transmitter muting circuit
作者： Eduard F. B. Boeckmann
DOI:
关键词: Transmitter 、 Transistor 、 Handset 、 Computer science 、 Electrical engineering 、 Electronic engineering
摘要: A telephone substation transmitter muting circuit used in a having hold function wherein, transistor turns on connecting network across the handset whenever is activated.
lens.org 参考文章(6)
Michael J. Callahan, Gordon B. Hoffman, Integrated circuit chip telephone communication system ,(1979)
G Merritt, G Kaner, R Kemmerly, Telephone audio program system ,(1973)
James Christopher Hayes, Burton Ralph Tunzi, DTMF Communication system ,(1976)
Robert H. Duncan, Telephone station circuit using digital tone generation ,(1980)
Robert C. Phillips, Hold circuit for telephone ,(1976)