The document discusses various aspects of organizational communication including formal and informal communication networks. It describes the formal network as the main channels of operational communication that handle bulk of communication needed to operate an organization. The informal "grapevine" network runs parallel to the formal network and comprises personal communication relating to the company's operations. Effective communication requires following the seven C's - credibility, courtesy, clarity, correctness, consistency, concreteness and conciseness. Different forms of communication include verbal, written, non-verbal, visual and audio-visual. Signs, signals and symbols are also important for conveying meaning.