tailieunhanh - BUILDING BROADBAND NETWORKS phần 3

Hơn nữa, các Khuyến nghị ITU-T mô tả kiến trúc điện thoại gói và giao thức tạo điều kiện thuận lợi cho tín hiệu cuộc gọi, quản lý cuộc gọi, và điều khiển cuộc gọi. Việc bổ sung của một máy chủ video và mảng để một mạng ISDN tại chỗ để hỗ trợ các ứng dụng bổ sung. | participating institutions to reserve high quantities of bandwidth at specified times for scientific research and or educational investigations. Charter Internet2 members such as the Universities of Wisconsin and Virginia Carnegie Mellon University the California Institute of Technology Cal Tech and the University of California at Berkeley verify ATM-over-SONET capabilities in sustaining multimedia integration and on-demand real-time interactive telecollaboration. I2 innovations contribute to the implementation of advanced network architectures technologies and protocols on the commodity or public Internet for everyday use. Internet2 I2 Network Aggregation Points of Presence PoPs Internet2 I2 deployment is based on the formation of GigaPoPs Gigabit Points of Presence . I2 GigaPoPs are high-capacity multiservice multifunctional interconnection regional transfer and aggregation PoPs Points of Presence that move vast volumes of voice video and data between I2 sites. Designed for regional groups of I2 participants Type 1 GigaPoPs route Internet2 traffic through one or two connections. Type 2 GigaPoPs provision access to next-generation federal networks and international configurations such as the Asia-Pacific Network APAN and the Nordic Countries Network Phase 2 NORDUnet2 . Commercial GigaPoPs that route I2 traffic to destination endpoints and optimize bandwidth availability are also in development. Michigan GigaPoP I2 GigaPoPs enable groups of Internet2 participants in specified geographical regions to access interactive multimedia applications evaluate current and emergent protocols and specifications and implement sophisticated educational technologies. For example Michigan State University Michigan Technological University the University of Michigan at Ann Arbor Wayne State University and the UCAID office in Ann Arbor use the Michigan GigaPoP for conducting teleresearch projects to facilitate middleware and application development and .