A diplomatic telegram, also known as a diplomatic cable , is the term given to a confidential communication between a diplomatic mission
Kaynak: Telegraphy

This was a practical electrical telegraph system, and subsequently electrical telegraph came to refer to a signaling telegram - a system
Kaynak: Electrical telegraph

A singing telegram is a message that is delivered by an artist in a musical form. Singing telegrams are historically linked to normal
Kaynak: Singing telegram