This document discusses oral communication and provides information on various aspects of oral communication such as types of oral communication, the communication model, merits and limitations of oral communication, barriers to effective oral communication, essentials of effective oral communication, and ways to improve oral communication skills. It covers topics like face-to-face communication, video conferencing, telephone communication, interviews, presentations, and group discussions as types of oral interaction. It also outlines merits like saving time and conveying feelings effectively, and limitations such as distance barriers and inability to retain messages for long.