Back تاريخ التلغراف الكهربائي Arabic Електрически телеграф Bulgarian বৈদ্যুতিক টেলিগ্রাফ Bengali/Bangla Telègraf elèctric Catalan Elektrisk telegraf Danish Electrical telegraph English Elektra telegrafo Esperanto Telegrafo elektriko Basque تلگراف برقی Persian Télégraphie électrique French
The electrical telegraph is a telegraph that uses electric signals. This is a signalling system where an operator makes and breaks an electrical contact with a telegraph key which results in an audible signal at the other end produced by a telegraph sounder which is interpreted and transcribed by a human operator.