Srinivasa Rao Gundu, Panem Charanarur, Kashinath K. Chandelkar, Debabrata Samanta et al.
The exchange of information from one person to another is called communication. Telecommunication makes it possible with electronic devices and their tools. The scientist Alexander Graham Bell has invented the basic telephone in 1876 in the USA. Telephones now have the new format in the form of mobi...