&lt;p&gt;&nbsp;&lt;/p&gt; &lt;p&gt;&nbsp;&lt;/p&gt; &lt;p&gt;&nbsp;&lt;/p&gt;   Telecommunication is the transmission of information . In earlier times, telecommunications involved the use of visual signals, such as beacons , smoke signals , semaphore telegraphs , signal flags , and optical heliographs , or audio messages such as coded drumbeats , lung-blown horns, and loud whistles. In