College】 【weak planning and construction of video conferencing systems guide --- Power By 【China】 weak home network.

<br> SARS outbreak over, video conferencing has become the new hot spot for the industry, many government agencies and business leaders have recognized that video conferencing is not only an important means for the emergency office, or to save travel costs and enhance interoperability within the branches of a very important .technology systems. .Many businesses, government leaders and CIO of the planning and selection of video conferencing has been rapidly, due to the application of video conferencing in the country is not very popular, how to plan, purchase and construction of a good, consistent with the actual needs of the video conferencing unit .CIO system is currently facing many problems. .This guide of video conferencing in the industry have engaged in more than 6 years experience, willing to sum up the experience and expertise to share with you. .This guide is from exposure to video conferencing systems CIO Vision steps departure, please pay attention when reading. .<BR> <BR> <BR> A comprehensive look at the basics of video conferencing systems <BR> <BR> 1, the definition video conferencing systems: <BR> <BR> video conference system is adopted in different parts of the staff .computer networks and dedicated video conferencing software or hardware systems, allowing geographically dispersed people can see each other in real-time images and sound to achieve the same effect as with the meeting. .<BR> <BR> 2, video conferencing system applications requirements: <BR> <BR> video conferencing system to send the multimedia data, different from ordinary data, sound and moving images as the source of large amount of data signals, .In general terms can not be directly transmitted over digital lines. .Meanwhile, based on the practical effects of the request, the user also requested to send voice, image signal continuous smooth, simple to use other accessibility features. .Therefore, to achieve such results, the system sound, image compression, communication line conditions, data and application sharing and other aspects of the technology presented a very high demand. .<BR> <BR> The last few years, video conferencing systems usually run on high speed line, the device is most specific, so the system very expensive, and support group meeting of members is relatively small, unable to adapt to normal .users. .Video conferencing has now begun to gradually INTERNET to broadband network development, costs have begun to fall significantly. .<BR> <BR> 3, the current standard video conferencing system: <BR> <BR> ITU International Telecommunication Union and its compatibility for video and audio communications technology for the specification, these basic agreements, while voice, .video encoding format, the user control mode and other elements to the relevant provisions. .Developed by ITU-T standard for video conferencing are: H.320 protocol (for group video conferencing on ISDN), H.323 protocol (for LAN, desktop video conferencing), H.324 (for telephone .Online video conferencing) and H.310 (for ATM and B-ISDN video conferencing on the network.) .At present this protocol, has not been explored very satisfactory agreement, such as the most popular H.323, as enacted in 1996, did not fully take into account the current complex network environment, and this standard is based on IP .network (eg LAN) on the multi-video and audio communications technology can be realized, so build operations on the basis of this technology platform, will mainly line access mode. .Dedicated access problem is a relatively high cost, only a small number of business users to use; Once out of the line network operators, insufficient bandwidth will be ubiquitous, instantaneous congestion and high packet loss rate of the impact of such issues, so video and audio quality is very .difficult to achieve the level of satisfaction of users. .At present the video manufacturers have developed in line with the current domestic standard communication protocol network environment. .<BR> <BR> <BR> 4. The basic form of video conferencing products <BR> <BR> general video conferencing system as a whole system includes: MCU (video conferencing server), conference room terminals, PC desktop terminals, telephone .Access Gateway, and several other parts. .A variety of terminals are connected to the centralized MCU exchange, the formation of a video conferencing network. .Also some manufacturers, such as the leading provider of video conferencing Rui Fute company also designed a voice conferencing system that allows all desktop PC users to participate in audio conferencing, which is derived on the basis of video conferencing. .<BR> <BR> (1) multi-point processing unit (MCU) <BR> <BR> MCU is a core part of the video conferencing system to provide users group meetings, group meetings and more connectivity. .MCU current mainstream manufacturers can generally provide up to 32 users to access stand-alone service, and can be cascaded, can basically meet the requirements of users. .MCU use and management should not be too complicated, or even make the client-side technology department of general administration department employees to operate. .<BR> <BR> (2) large and small meeting rooms <BR> <BR> end product end product is a small medium and large meeting rooms available to the user's conference room, the device comes with camera and remote control keyboard, display can be .through the TV or projector, the user can choose a different venue the size of the display device. .General conference room facilities with SONY or CANON of the dedicated camera, you can remotely turn around, which can cover any of meeting people and things. .<BR> <BR> (3) desktop (PC) terminals <BR> <BR> directly on the computer for video conferencing, the general configuration relatively low cost PC camera, only 1 person under normal use. .That many enterprises choose the way software and hardware combination, can be installed for each branch hardware terminal conference room, conference room environment in other offices without desktop video software selection terminal. .<BR> <BR> (4) telephone access gateway <BR> <BR> directly by phone or cell phone users can be added to the case in the mobile video conferencing in the past, this trip on many domestic leaders and many people is especially important .. .Can be said that video conferencing will become the indispensable function. .<BR> <BR> <BR> Second, look at video conferencing application status and development trend of the industry <BR> <BR> After several years of development and market promotion, video conferencing system to understand more clearly its applications are mainly in the .: remote branch meetings, business meetings, remote training, remote sales and support, remote education, telemedicine and so on. .<BR> <BR> Government agencies, institutions, industry, business users as a result of needs, often need to convene the Executive Council, such as the government's financial meeting, planning meeting, the enterprise board, president and run the meeting, the branch manager level meetings .and so on. .At these meetings, participants across the country, convening of the meeting can be random or regular basis, most of the content and nature of work-related meetings. .In addition to the traditional administrative meetings, the various users of the branches or departments often work at the nature of this sector closely linked to the work of the conference, such as technology, finance, information, and other departments-level meetings. .The meeting in the traditional model, the need to travel long distances was concentrated in one place is a waste of valuable time and added travel costs, and can not always be a small discussion. .<BR> <BR> For securities companies retail hall, large room and Internet investors who trade to explain the Department to provide a detailed analysis of content, like TV stock analysts to explain the same time as the user can see the changes .stock curve, but also bi-directional function can use the system interact with investors, stock analysts explain this synchronization system for securities companies will be the good service the investors one of the tools; in educational institutions, remote real-time visualization .Courseware systems are also of concern, students only need to see the multimedia courseware, but also need to understand the teacher's body language; in the medical field, the remote diagnosis system will be used more and more common among the families in their homes to .can Xunyiwenyao; in general business, the headquarters of the various branches of business training, technical training can be accomplished through such systems. .<BR> <BR> All in all, with the domestic data networks and other infrastructure continues to improve, government agencies, institutions, industries and enterprises has been largely completed the pattern or Wide Area Network INTERNET access and other broadband line for broadband data networks composed of .. .As these lines is the use of the monthly lease, take full advantage of video conferencing systems, the information transmission vivid, the establishment of audio-based multimedia technologies, interactive channels of dialogue, is an existing network platform rise. .<BR> <BR> <BR> Video conference on current trends in the following points: <BR> <BR> 1, video conferencing market has changed from the central, provincial government and big business units gravitropic City County Government .<BR> fast speed and SMEs expand; <BR> 2, in the network environment from a simple line network to the INTERNET broadband network development; <BR> 3, video conferencing applications entered the era of integrated applications, video conferencing system not only .just stay in the conference room opened <BR> will provide a single function, such as the leadership of many business users are required to join the video conference by telephone, the integration will <BR> meeting room, desktop conferencing, data services, telephone access or even a comprehensive .products into the mainstream; <BR> 4, part of the cost-effective video conferencing system software and hardware combination to be welcomed; <BR> 5, the rapid growth of domestic firms. .<BR> <BR> <BR> Third, comprehensive look at the current industry's leading provider of video conferencing systems video conferencing vendors <BR> <BR> currently divided into the traditional video conferencing hardware manufacturers, software vendors, and video conferencing whole new generation of .combined with video conferencing hardware and software vendors. .<BR> <BR> Major manufacturers of video conferencing hardware terminal: foreign companies have POLYCOM, VCON, VTEL, TANDERBERG, Rui Fute domestic companies, Huawei, ZTE, etc., of which the highest market share POLYCOM; TANDERBERG terminal high-definition .but the price is very high, high-end user level in the largest share; Huawei, ZTE emphasis on the telecommunications industry and military projects; Rui Fute positioning requires relatively high cost in the mid-range projects. .Main MCU products <BR> <BR> home: ACCORD (acquired by Polycom), RADVISION, a domestic DST, Huawei, Rui Fute and so on. .<BR> <BR> Product line now has a full set of few firms, only Rui Fute, Huawei, which are more comprehensive product line, due to bandwidth fluctuations need to control important functions such as MCU and tie both ends of the terminal, so the current MCU and terminals .integration as an important trend, such as POLYCOM ACCORD to acquire the company. .Rui Fute product line is now complete, the product coverage of the MCU, conference room, desktop, telephone access, voice conferencing, instant messaging and other functions. .<BR> <BR> <BR> Here to highlight the next Rui Fute SmartInOne video conferencing system, which is currently under INTERNET whole new generation in video conferencing system, is ideal for enterprise groups and listed companies, such as the use of international trade enterprises. .The conference room contains the terminal hardware and software desktop conferencing terminals, video conferencing and other parts of the server, to provide users with broadband Internet access in line with the various lines of up to several hundred points the next large-scale video conference. .Unlike traditional hardware terminal line environment can only be shipped to, SmartInOne RCVP using self-developed transport protocol to support NAT, firewall, proxy server and a variety of adaptive, able to support leased line, Internet, LAN, wireless networks, satellite .the complex network of various network environments, and through interactive Qos quality control function, can automatically adapt to bandwidth fluctuations, ensuring stable and smooth conduct of the meeting. .Image with a new generation of self-developed video codec algorithm <BR> <BR> (RIVC), can provide a more realistic, clear, smooth images, the image maximum frame rate of up to 30 frames / sec, and can greatly reduce the video .stream, the real Internet, stream high-definition video images. .The single video conference terminal server can support 500 concurrent, while supporting concurrent capacity far beyond the traditional video conferencing systems. .At the same time, unlike some of the pure software video conference system, as a large number of video conferencing is still held in the conference room, meeting rooms specially designed Rui Fute terminal hardware efficient, stable, easy to use, the unique design of the chip echo cancellation and other patents to the professional video .Conference of perfect results. .SmartIneOne video conferencing system also has powerful data applications, including data distribution, document sharing, meeting recording, whiteboard, collaborative web browsing, application sharing and other functions. .<BR> <BR> SmartIneOne revolutionary video conferencing system not only in their application for the broadband environment, the huge open space, more critical is the cost of hardware production compared to the traditional furniture has a very strong competitive edge, a large number of government and business completely .can be expensive for the budget rather than to purchase inputs. .<BR> <BR> <BR> Four video conferencing systems to determine the needs and budget <BR> <BR> CIO basis of the above understanding, it has to determine the short-term demand and video conferencing systems and long-term demand, the network communication unit .status, budget and so on. .As the demand for different sectors and units will be very different, so it is necessary to clearly describe the specific application, according to the specific needs to find the right solution. .<BR> <BR> The first is a clear system of user groups and usage requirements. .As mentioned earlier, the establishment of video conferencing, includes business meetings, business meetings, training a variety of applications. .Therefore, according to video conferencing units in the interior of the focus of the initial application of the future will be how to extend the application. .<BR> <BR> Example, many listed companies in addition to regular business meetings, you can video conference with the Board consider the application together. .Major shareholders of listed companies, directors, and distributed in different regions, even outside. .Because of geographical constraints, before the convening of a formal board of directors or the shareholders will often need to gather everyone in one place, in addition to fees for the biggest problem is not promptly convene a meeting of shareholders or directors meeting to daily decision-making has caused great inconvenience. .<BR> <BR> What point in the conference room ready to open, which may be deployed in the desktop computer to open, the need for telephone access and the maximum number of points at the same time meeting. .<BR> <BR> Second, we must consider the current situation and possible lines of communication route planning, the use of the internal line, or through the INTERNET network, or even mixed types, such as through an internal network within the same time, the INTERNET connection to external networks. .<BR> <BR> Finally, and leadership of a video conferencing system to determine the initial budget. .Budget from the establishment of the video conference system can travel savings for the company, improve efficiency, companies considering IT investment, etc.. .For example, the system first branch meeting, estimate the annual meeting if the video back to headquarters office leadership can reduce the number of how many percentage (50%), how much you can save travel costs and so on. .<BR> <BR> An example of a listed company to a brief description of its video conference system requirements and budget: <BR> <BR> 1, building INTERNET-based video conferencing system, broadband network, the first for the company's branch offices and head office .between business meetings, board meetings and further extended to key partners with upstream and downstream business meeting. .<BR> <BR> 2, consider the system capacity of 20 concurrent users, consider extending to 40. .Hope while allowing four departments at the same time meeting. .<BR> <BR> 3, the system in the Headquarters (Shenzhen) and Shanghai, Beijing, Hong Kong Branch consider the use of meeting rooms, with other local desktop system. .Telephone access at the same time there are 4 concurrent asked to lead a business trip or a conference call at any time using mobile phones to participate in video conference system. .<BR> <BR> 4, all branches are currently using ADSL Internet access, the headquarters of China Telecom broadband access. .<BR> <BR> 5, is expected on the system, companies can save travel costs by 100 million, a more reasonable estimate of the system can be 60 <BR> million or less. .<BR> <BR> Demand for another company might be: <BR> <BR> 1, building a network primarily used for video conferencing system between head office and all branches of training. .<BR> <BR> 2, concurrent 30-point system capacity requirements and comprehensive use of desktop systems, the headquarters can be put into the large screen projector. .<BR> <BR> 3, requires a strong data conferencing features, including whiteboard, PPT sharing, application sharing, conference recording and <BR> playback. .<BR> <BR> 4, requires that all branches of the internal network users can also participate in training (radio, does not participate in the dialogue.) .<BR> <BR> 5, expected after the training costs on the system can save 80 million per year and significantly improve training efficiency, the proposed budget for the system <BR> 50 million. .<BR> <BR> <BR> V. contacts and programs to manufacturers <BR> <BR> aggregate demand in the internal applications, the system budget, the line has a basic understanding of the environment, everyone can access the budget situation .major brands of video conferencing systems provider. .Most of these companies which are agents or systems integrators, some of the contacts directly with manufacturers. .<BR> <BR> Summary program is mainly to see whether these companies integrated solutions to meet its internal demand for video conferencing and the overall demand for the coming period. .Such as telephone access may be considered within the planning time required, and it is the main form of participation in leadership, it must depend on whether these providers of such products and programs. .<BR> <BR> Selected on this basis can offer several calls for further, because the pricing and there is a certain level of general price discount, so long as not too far behind you can continue to contact. .To the program provider or integrator with a preliminary discussion and understanding of the product functions. .<BR> <BR> Current purchase video conferencing system must remove the "domestic products, foreign products must be better than good" concept. .Actually present, several manufacturers of products in product performance, development of personalized features, services, etc. are not worse than the foreign companies, cost is relatively high, as China's video conference system market, many domestic companies such as Rui Fute, .Huawei increasingly competitive, and if the environment is in line on the INTERNET, Rui Fute the performance of other domestic products even better. .<BR> <BR> <BR> Six, the system demo or trial <BR> <BR> the saying goes, seeing is believing. .Video conference system is most important is the overall effect of the performance, so under normal circumstances, the system provider may request a presentation, presentation may be a remote presentation (some companies directly through the INTERNET demo), live demonstrations and other means. .<BR> <BR> Satisfactory result in the presentation based on the specific needs according to whether it can be coordinated with the provider of the trial (a trial within the environment must also consider whether they have, etc.). .<BR> <BR> Trial period in the demonstration and may request the use of personnel, including leaders come to experience the effect. .This system will have a better basis for selection. .<BR> <BR> Judge in the demo video conferencing system in the importance of quality basic indicators: <BR> <BR> 1, in a certain bandwidth (eg, 512K) under the sharpness of the image, the image is a mosaic, the image frame rate .. .<BR> 2, the sound is clear, whether intermittent, with or without noise and echo. .<BR> 3, image and sound delay, 0.6 seconds are generally more normal <BR> 4, lip sync is that the image and voice are fundamental to the past and the actual post-match speech. .<BR> 5, whether the effects of concurrent users for a long time remained unchanged. .<BR> 6, fluctuations in bandwidth performance indicators under the above whether the effects remain the same. .<BR> <BR> <BR> Seven <BR> <BR> building video conferencing system based on the above investigation, formally write a video conferencing system construction plan report (or feasibility study report), the Integrated Project .meaning and purpose, product selection, the basic project plan, budget and so on. .<BR> <BR> Be led by consent and the final budget authorization, you can select a vendor or systems integrator in the commercial aspects of the negotiation phase and then into the construction phase. .<BR> <BR> Video conferencing system construction as it relates to many segments, so to make coordination across agencies, with services to carry out the construction. .<BR> <BR> Run through the Internet even if it is considered placed in the IDC room on the MCU, you can select the local or city IDC put the main server, video conferencing, video conferencing so that people can guarantee to meet the large bandwidth requirements when .. .<BR> <BR> The system is running successfully, but also consider how to make video conferencing maintenance, and can consider how to gradually expand the scope of video conferencing applications, such as gradually from the internal business meeting business meetings, training, board, etc. .terms of expansion, the video conference to play a greater role. .<BR> <BR>.