An e-learning system provides learning content and interactive learning games to users using computer systems and voice-over IP (VOIP) telephones and other devices. The e-learning system includes an authoring system allowing the creation of customized learning content and interactive learning games. A content presentation module presents learning content to users of computers and VOIP telephones and other devices. A data collection module receives user data from the VOIP device indicating the user's performance with the interactive games. In a further embodiment, a user data presentation module analyzes the user data and presents a report including user data. The interactive learning games are designed to reinforce and measure users' understanding of the instructional content provided by the content presentation module. In some applications, the learning content pertains to functions of the VOIP device and the interactive learning games simulate the functions of the VOIP device.