Abstract: A method for delivering distance education for real clients, each either a teacher client or a student client, at multiple teaching sites and a system using the method are provided. A multi-layer arrangement is used to arrange computing servers to be one first-level server and one or more second-level servers each communicable with the first-level server. Each server serves real clients located in a pre-determined site. Furthermore, each server sets up a virtual client to execute the teacher client's activity command so as to locally generate application-specific data, which are then stored in this server. When a communication link to a student client is re-established after an activity interruption, resynchronization of the student client's learning-activity state with the teacher client's is regained based on the locally-generated application-specific data stored in the server that serves the student client without a need to burden other servers.

Abstract: A method for delivering distance education for real clients, each either a teacher client or a student client, at multiple teaching sites and a system using the method are provided. A multi-layer arrangement is used to arrange computing servers to be one first-level server and one or more second-level servers each communicable with the first-level server. Each server serves real clients located in a pre-determined site. Furthermore, each server sets up a virtual client to execute the teacher client's activity command so as to locally generate application-specific data, which are then stored in this server. When a communication link to a student client is re-established after an activity interruption, resynchronization of the student client's learning-activity state with the teacher client's is regained based on the locally-generated application-specific data stored in the server that serves the student client without a need to burden other servers.

Abstract: A cordless phone system 100 for performing data retrieval from a wireless network through a wireless phone is disclosed. The cordless phone system 100 comprises a phone base apparatus 110 and a handset apparatus 140. The phone base apparatus 110 comprises a communication interface 111 for coupling to a PSTN, a communication interface 122 for wirelessly communicating data through a communications network using a wireless network protocol, a communication interface 132 for wirelessly communicating with the handset apparatus 140 using a cordless telecommunications protocol, and a processing means 124, 134 or 180 coupled to the PSTN communication interface 111, the wireless network communication interface 122, and the cordless-telecommunications communication interface 132 for processing data communicated between the wireless network communication interface 122 and the cordless-telecommunications communication interface 132.