It was a beehive of activity during the freedom movement and many people from Amruthur had participated in the 1942 Quit India Movement and had courted arrest.
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Amruthur now has STD (national calling) and ISD (international calling) services, and cellphone service is available from different vendors.
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Also, in the 1960s, Amruthur got telephone services with a Public Call Office (PCO) which was then expanded to a manual telephone exchange, and then grew into an automatic telephone exchange.