1

Facts About Telephones Revealed

News Discuss 
To learn more details on the cookies we use or how to vary your settings, remember to see our Cookie Coverage. OK Several early manual telephones had an attached hand-cranked magneto that created an alternating recent (AC) at fifty–a hundred V for signaling to ring the bells of other telephones https://peucher.club/10475633293851099924/ecouteurs-bluetooth-sans-fil.html

Comments

    No HTML

    HTML is disabled


Who Upvoted this Story