Telegraph network and message switching. The equipment is partly automatic, partly manu...
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Telegraph network and message switching. The equipment is partly automatic, partly manual (push-button switching), but no re-typing is involved. S. The use of switching for morse circuits was abandoned when the Government took over the British telegraphs in 1870. Computer based message switching is still used many organizations having many locations of Contents: Network Architecture and Services Telegraph Networks & Message Switching Telephone Networks & Circuit Switching Computer Networks & Packet Switching Future Network Architectures and Services Key Factors in Network Evolution Network Classification Slides are adapted from the Textbook: “Communication Networks” by Widjaja and Garcia At the sending station, an operator taps on a switch called a telegraph key, spelling out text messages in Morse code. Later computers were introduced to do the function of message switching. There were central telegraph offices which acted like nodes of telegraph network and performed the task of message switching. A Telegraph is a system for sending messages over long distances. Of the private telegraph companies taken over by the Post Office, several had developed private wire services to renter's offices. If you do, read on: if you don’t, the story alongside might help. Originally, the armature was intended to make marks on paper tape, but operators learned to interpret the clicks and it was more efficient to write down the message directly.
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