Question

ExPlAin tHe c0nCepT:-) TeLex sErViCe☺☺

Answer 1

a system of communication in which messages are sent over long distances by using a telephone system and are printed by using a specialmachine (called a teletypewriter) : a message sent by telex.

Answer 2

Explanation:

Telex, international message-transfer service consisting of a network of teleprinters connected by a system of switched exchanges. Subscribers to a telex service can exchange textual communications and data directly and securely with one another.