(i). The teleprinter is basically used for sending and receiving of telegraph signals.
(ii). Teleprinter switching system is used in Telex (teleprinter exchange) which is a convenient method of sending printed messages. An auto-telex service has the advantage of communication as in telephone system and transfer of written record as in telegraph system.
(iii). Due to these two advantages, these services are used both for commercial and industrial purposes.
(iv). The teleprinter can also be used for typing the local records.
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