THE internet ENCYCLOPEDIA 1 volume 3 phần 10

Điều này xảy ra bởi vì các thiết bị điện tử của một mạng điện thoại thông thường gây ra các đầu xa của hầu hết các kết nối cuộc gọi vang vọng lại một phiên bản làm suy yếu của tín hiệu truyền đến cuối nguồn gốc. | 848 Wireless Internet Intersymbol interference ISI Distortion of the received signal due to temporal spreading and interference of the transmitted pulses. Medium access control MAC A protocol for ensuring that the common wireline wireless medium is shared nicely among many potential users. Node A device on the network such as a workstation or a router. Roaming The ability to establish and maintain wireless connection outside the home area of the user. Router A device that performs routing. Routing The process of moving packets from the source to the destination in a network. Routing table A list in the router that matches the destination IP addresses to the physical ports that lead to the optimal path to the destination. short messaging service sMs A service available on many cellular networks that enables near real-time transmission of short text message among the subscribers. sip a signaling protocol used to set up and control interactive applications over the Internet. Tunneling The process of transporting encapsulated data packets through foreign networks that may be using different network protocols. Voice over IP VoIP A service that delivers voice communication over the Internet using IP. World Wide Web WWW A large group of servers on the Internet that uses HTTP to transport files and documents often formatted using HTML. CROSS REFERENCES See Mobile Commerce TCP IP Suite Voice over Internet Protocol IP Wireless Application Protocol WAP . REFERENCES 3GPP TS . 2002 April . Technical realization of the short message service SMS version . 3GPP TS . 2002 April . Multimedia messaging service MMS functional description stage 2 version . Aboba B. Simon D. 1999 October . PPP EAP TLS authentication protocol RFC 2716 . Bakre A. Badrinath B. 1995 May . I-TCP Indirect TCP for mobile hosts. In Proceedings of the 15th IEEE International Conference on Distributed Computing Systems pp. 136-143 . New York IEEE. Balakrishnan H. Seshan S. Katz . 1995 .