The use of the online taxibike XYZ application is based on the Technology Acceptance Model (TAM) theory. The online taxibike XYZ application can be good if it has a good assessment based on the TAM variable. The purpose of this study is to obtain empirical evidence regarding the effect of the TAM principle on customer satisfaction. This study uses a quantitative causal research method to analyze the application of the Technology Acceptance Model (TAM) principle to online taxibike XYZ application customer satisfaction. The instrument in this study used a questionnaire instrument with a closed questionnaire type. The data analysis technique used three tests: data quality test, hypothesis test, and classical assumption test. All variables x, both reliability, flexibility, privacy, accessibility, ease to use, all positively influence customer satisfaction

Time synchronization is the basis of network real-time communication. The combination of IP Multimedia Subsystem (IMS) and Overlay Networks is an important direction of the development of IP communication. Facing the needs and issues of IMS overlay network architecture, this paper proposes a new time synchronization mechanism that fits well in IMS overlay network and completes the protocol definition. The behavior of modifying the expansion of open source software SIPp achieves the function of time synchronization service using the transmission of the SIP message to accomplish, and verifies the effectiveness of the proposed scheme.