This document discusses levels and constituents of communication in organizations. It outlines three levels of communication: interpersonal, organizational, and corporate. Communication can be internal between organizational constituents like staff, board members, and volunteers, or external with audiences such as consumers, media, stakeholders, and the public. Effective communication plays a vital role in addressing emerging issues for organizations like cultural, ethical, crisis, and technological matters. The key process of encoding a message based on the context and audience is discussed as being crucial for effective communication.