The telegraph service was stopped after the advent of
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Telegraph services in India date back to 1850, when the first experimental telegraph line was established between Calcutta and Diamond Harbour. The British East India Company started using the telegraph a year later, and by 1854—when the system opened to the public—telegraph lines had been laid across the country. The telegraph continued to thrive, in India and around the world, even after Alexander Graham Bell patented the telephone in 1876. For more than half a century, telegrams were sent over cable lines, but in 1902 (capitalizing on the work of Italian inventor Guglielmo Marconi) the Indian system went wireless.
In India, as in the rest of the world, a trend toward digital communications that began with the advent of the digital computer in the 1960s, increasingly threatened the continued relevance of the telegraph. By the 1980s, the analog facsimile telegraph, perfected in the 1930s and used to send information over telephone and telegraph lines, was replaced by the digital fax machine. Fax—and later email—began to eclipse telegrams, regular mail and other earlier communications systems, a process that only accelerated with the rise of the Internet.