【School】 video communications platform weak procurement proposal --- Power By 【China】 weak home network.

<br> enjoy the video applications with the premise that a high-quality video communications platform, this end, we prepared a procurement proposal for building the platform, and detailed product sourcing guide. .<BR> Video communications platform, the implementation of the procurement approach proposed <BR> <BR> three users with implementation of the current way video communication applications, the base has the following three. .<BR> One way is through a dedicated communication line, to establish a video conferencing application based video communication system. .It is designed for users include government agencies, large enterprises and carriers and so on, they constitute a high-end video communications user groups. .This type of system, relatively large, sometimes nearly a hundred will be asked to participate in the meeting while the meeting point, so the audio and video quality and system stability requirements are also higher. .<BR> Followed by leased lines are dedicated to establish a video communication system. .The target users are generally applicable to businesses, schools and other user-based. .At present, how to get the best price, is this part of the user needs to be considered an important factor. .In addition, how to video communication systems and the existing office systems, and the combination of telephone switching system, the problem can not be ignored. .<BR> Then there is the use of the communication line telecom operators, carriers and even video communications platform, built to carry out video applications meet their needs. .Such as China Unicom and Railcom have been established for the operation of video communications platform. .This approach is currently suitable for small businesses, and even individual users. .<BR> Enterprise video communications applications <BR> video communication system is basically the current H.320 or H.323 standards are used in the system to determine what products, should fully consider the actual line conditions and use of .. .Such as the need for a lot of contact with the outside world of small enterprises, should be selected as the transmission medium H.320 ISDN products, so that the use of cost and applicability to a more reasonable; for confidentiality, reliability is relatively high, and has sufficient line .resources systems, are more suitable for H.320 system. .Conversely, the pursuit of full use of network resources, and requested an extension to the desktop video users, you should give priority to H.323 systems. .<BR> Compatibility, interoperability is another important indicator of procurement. .Product interoperability is good, business users can select the new video communications product manufacturers and will not conflict with the old system. .Currently, H.320, H.323, H.324M, SIP and other system has been achieved through a certain device interoperability, and ordinary PTSN system can H.323-H.320 Gateway (Gateway) to achieve interoperability, and .Some video terminal with a PSTN interface, the product itself, in a video conference held at the same time, you can access regular analog telephone voice. .<BR> More specific to product performance, there are still some important buying factors, such as MCU, scalability (that is, through changes in carrying capacity of the board changes to achieve the scalability), MCU control for the terminal equipment (such as .Meeting each other is free to adjust the camera angle), MCU cascading and stacking capability (open the necessary conditions for multi-session), terminal equipment codec chip (DSP) processing capability. .<BR> Carrier-grade video communications services provided by the carrier <BR> carrier-grade video communications services, has become a new option for business users, and video communications applications is the development trend of the future. .<BR> As carrier-grade video communications business is still in the exploratorystage, so inevitably there are some immature factors: primarily in the conduct of business models and lack of marketing success; followed by the standard, safety, responsible .network flexibility, tariff policy, the realization of more specific issues such as business also is not implemented properly addressed. .To this end, business users in the selection of operators to provide video communication services, it should be noted: according to their use of network conditions and business requirements, select the appropriate co-operators; try to set up the bearer network video services even more simple, high-quality .and security; in service with operators have responsibilities and rights and obligations. .Mainstream software video conference system <BR> About <BR> can see, full hardware video conferencing systems market will dominate the software and hardware video conferencing systems to develop their potentials in the situation, this will be the mainstream video communications market in the future. .However, software video conference system, after all, not National Cheng Kung University, for its exciting future performance, but also we'll see. .<BR> Below, we introduce you to some mainstream software video products. .<BR> 1, video conferencing systems <BR> Lenovo Lenovo product lines in a number of new members, the current agent is riding association to promote the product. .Lenovo video conferencing software solutions, based on the MPEG-4 multimedia compression standard, in line with internationally accepted definition of H.320 and H.323 protocol standards, with open and scalable to adapt to a broadband network from 56Kbps .environment, and the price only a hardware solution of 1 / 5 to 1 / 10. .<BR> Http://www.lenovo.com <BR> 2, V2 Conference all-round platform for video conferencing speed <BR> Beijing Vision Technology Co., Ltd. was founded in late 1999, Tsinghua Pioneer Park, is the video conferencing system software on the market .One of the main manufacturers, with video conferencing systems and real-time communication system V2 Conference V2 VideoCommunicator two products. .Real-time transmission of images, voice, text, and share all kinds of remote documents. .http://www.v2tech.com/cn <BR> 3, RadFort SharpPoint 2000 IP Video Conference System General Purpose <BR> Shenzhen Rui Fute domestic software companies are also major manufacturers of video conferencing system, one of large-scale development is currently being .agents. .The desktop video conferencing system RadFort SharpPoint 2000, consistent with ITU-T H.323v2 technical specifications, design is the use of the desktop PC's desktop conferencing systems. .<BR> Http://www.radfort.com <BR> 4, sub-video conferencing software soft Asiasoft eMeeiting <BR> Asia is the multimedia network communications software (NGN) software and customer relationship management software solutions provider, video .to provide software solutions within its product line in a child, it is not is the main. .eMeeting software company independently developed sub-video conferencing software beta Asiasoft eMeeiting has been completed, this is a IP-based audio and video conferencing software can be achieved between the two points audio and video transmission, voice and video media broadcasts in the form of the meeting. .<BR> Http://www.asiasoft.com.cn <BR> 5, Will Seth CUlearning <BR> Beijing Will video conferencing software is a simple software company Access video conferencing system. .Has just developed products, is the promotion and development agents. .CUlearning its relationship with South Korea and the United States, the two partners jointly developed video conferencing software, is a TCP / IP-multi-point video conferencing overall solution. .<BR> Feature list shows some indicators of the framework agreement <BR> system applications: H.320, H.323 or H.324 / M and other video conferencing system to support the communication protocol. .<BR> H.26 × series and G.7 × × series of audio and video codec Agreement: the agreement or not between the no essential difference between the advanced, but each represents a support agreement under the application conditions, so .In a sense, can be said that the more extensive product support agreement, and its adaptability to the environment for the application of the stronger. .<BR> Whether to support the caller call set: in the terminal side can be defined and the convening of the meeting. .<BR> Whether to support the T.120 data capabilities: ITU-T is on the conference system in the data communication session set a framework agreement to support the conference whiteboard, real-time multimedia data transmission and other meetings. .<BR> Rate adaptation capability: different rates of more than one level of the terminal, the ability to meet simultaneously. .<BR> Reliability (MTBF): The average time interval without failure. .But nowadays there is no industry standard test methods, therefore, the authority of the indicators is difficult to determine, usually in the form of vendor commitment, this time is more important to manufacturers of brand strength..