short note on personal communication.
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More specifically, PCS refers to any of several types of wireless voice or wireless data communications systems, typically incorporating digital technology, providing services similar to advanced cellular mobile or paging services.
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personal communication.
The personal written communication is handled by the Indian postal network. Cards and envelopes are considered first-class mail and book packets, registered newspapers and periodicals are called second class mail. The first-class mail is air lifted while the second class mail is carried by surface transport. For quick delivery of mails in cities and large towns, six mail channels have been introduced. They are called Rajdhani Channel, Metro Channel, Green Channel, Business Channel, Bulk Mail Channel and Periodical Channel.