Communication regulates the relationship between the project stakeholders and the project manager and how the members of the project work to achieve the established project objectives (RodrÃguez, 2017). It is very important to investigate how communication affects the project activities and the overall performance of the project. The general objective of this research work is to show the role communication has for the effectiveness of project management in telecom expansion projects in Ethio telecom. Communication practice, the relationship between project communication and project management will be assessed. This research applied Quantitative and Qualitative approaches. Descriptive research design was adopted. Primary data came from information gathered by questionnaires and observations. Secondary data is used from reviewing written documents. Random sampling was used to select the participants of the research work. The Major findings of the research show there weren't suitable communicational technologies choices for the company. The respondents were well aware of the importance of using the communication process and its contribution in improving the project management. The research found out Non-verbal communication channels are not suitable for daily reporting of project progress update however, both formal and informal communication channels can contribute for the improvement of project management effectiveness. New communication technologies help upgrade the project management system. Project communication management process, communication technologies, and channels are the elements of project communication that significantly affected the effectiveness of project management. The researcher recommends the company to focus on improving the appropriate use of communication channels, technologies, and communication process.