Establishing communication involves two key steps: liaising and reaching. Liaising is the process of communicating with someone in order to exchange information or to resolve a problem. It involves talking, negotiating, and coordinating with others. Reaching is the process of making contact with someone in order to establish a connection. This could involve sending an email, making a phone call, or even meeting in person. Together, these two steps are essential for establishing communication between two or more people.