Router A computer or software package that handles the traffic between two or more networks. For example, a Web server provides clients access to the Web. Shareware Software made available free for a limited time. After a trial period, the user is asked to pay a fee to the developer. Simplex A communication process that allows information to flow in only one direction at a time.
Common speakerphones are simplex devices because only one person can speak at a time.
Contrasts with duplex. Synchronous Communications between the student and teacher that take place simultaneously. A special type of telephone line that transmits digital information at a high rate. These lines are much more expensive than regular telephone lines. A telephone line that is capable of transmitting digital information at rates even higher than those of a T1 line.