【 Weak current College 】 impact video conference the future of technology-Power By 【 China power house network 】

The rapid development of the global economy, stimulate the demand for video conferencing, particularly based on the software's video conferencing products on video conference system for universal application is up to the flames.
As the popularity of the application, the user needs is continuously thinning, not only through video conferencing system, and need to be based on cooperation and collaborative video.
Taking into account the characteristics of the user, regardless of technology or application level, you need video conferencing provider to provide new solutions to meet the needs of the market. Following this article will explore the future might affect the video conferencing application of key technologies, including the industry generally optimistic about SIP protocol, in the future video applications will become more and more shows its role of video middleware technology and Web technology.

SIP protocol

In the next generation network, because IP products and the IP gateway will be in your network and integration of mass use allows end-to-end IP can be used to achieve pure IP business applications. While IP-based on pure SIP from the HTTP and SMTP, simple structure, in the style follows the concise, open and compatible and scalable principles, suitable for flexible video applications. For NGN in IP networks for VoIP and multimedia communications, SIP in meet NGN characteristics requirements of application has unique advantages, "where can I find a video you need where there will be videos" today, SIP has broad application prospects.

SIP has two elements: SIP user agent and SIP network server. User agents are calling Terminal system elements, and the SIP server is processing and multiple calls related to UniCredit order network devices. SIP is used to help provide advanced across the Internet phone service, IP telephony is a formal business model evolution, SIP is used to ensure that the evolution of the implementation of NGN series agreement important. SIP is the IETF standards process, it is a part of such as SMTP and HTTP based. It is used to create, change and termination of the user based on IP network between calls. In order to provide phone service, it also requires a combination of different standards and agreements, in particular the need to ensure that the transmission (RTP), and the current telephone network signalling interconnection, to ensure that the voice quality (RSVP), to provide directory (LDAP), to identify users (RADIUS), and so on.

SIP is described as used to generate, modify, and terminate one or more participants in the form of a variety of data between sessions. SIP session including the Internet, multimedia conferencing, Internet (or any IP network) telephone call and multimedia publishing. Session of the members to be contacted by multicast or unicast network of communication, and each session can be a variety of different types of content that can be plain text data is digitized audio, video, data, applications such as games, to SIPs application brought tremendous flexibility and potential.

SIP support session description, it allows the participants to a set of compatible media types. It simultaneously through a proxy and redirect the request to the user's current location to support user mobility. SIP is not any particular session control protocol binding. In essence, SIP provides the following features:

1. the name translation and user location. No matter where the caller is to ensure that the call to the called party. Perform any descriptive information to locate information mappings. Ensure that the call (sessions) of essential details are supported.

2. characteristics of the negotiation. It allows and call the Group (this can be a multi-party call) in support of the agreed characteristics (Note: not all parties are able to support the same level of features). For example, the video can or cannot be supported. In short, there are many need consultation.

3. call participant management. Call participants to be able to introduce other users to join the call or Cancel to other users. In addition, users may be transferred or reset to call hold.

4. call feature change. Users should be able to change the call during a call. For example, the call can be set to "voice-only", but during a call, the user can according to the need to open the video function.

Through the development of the Internet Protocol and experience in voice and video and other real-time communication field, using the SIP application server will service provider benefits include:

1. accelerating application deployment. SIP can in a few weeks to develop and launch the application, thus speeding up the pace of the benefit.

2. reduce costs. SIP development using standardized methods, generate significant reuse of resources, this can reduce costs, shorten service provider time to return on investment.

3. improve the end-user experience. Reusing resources will enable users to gain, they can become familiar with the appearance of a single, achieve a variety of applications.

As IP network used to establish the session signaling protocol, SIP has attracted widespread attention, will become important applications such as Microsoft WindowsXP with SIP signaling protocols, which means that SIP in most personal computers enables real-time communication; 3GPP (ThirdGenerationPartnershipProject) using SIP 3 g architecture plan, users establish SIP become 3G real-time communications session.

Although now the H.323 in video conferencing and other network video applications have more mature in the market of products accounted for a large part, but it is based on traditional telephone signaling, centralized, hierarchical control, makes the agreement more complex brings the flexibility in the application. While SIP simple, flexible, and other characteristics are suctionLeads more and more attention and support equipment manufacturers, and gradually become the future development direction.

Web-based video conferencing system

Using SIP and video middleware technology for various video conferencing application system quickly build provides an efficient way. But how a familiar application environments, provide to the user enough video application service support, is the current video conference system an important application orientation. The popularity of the Internet, the most familiar network application is a Web service to explore how to build Web-based video conferencing systems.

Web-based video conferencing system can realize real-time, interactive communication technology that will dramatically change the way people work, trigger a new wave of Internet application changes. This application is actually the video conference technology and Web technologies, the user only needs to be simple to use IE, you can be with each other for point-to-point and point-to-multipoint communication, this of course needs to service provider support. This is the Internet's most attractive applications, foreign carriers and service providers already offer the service. In our country, Qinhuangdao Dongda software has done a great job of exploring, they achieve the realization of Web-based network interview system has a lot of character. The system uses video middleware built video server provides user directory, authentication and authorization, video streaming distribution services, in the Web application service and email system calls the appropriate video controls, you can use the units and job seekers to use browser and e-mail, complete information publishing, resumes data upload, network interviews, network, interview, test scoring, the entire process involved in recruitment, users without completing the interview process, saving a job seeker and the employer's time, saving businesses and personal expenses. This Web-based network video conferencing, the effective implementation of the exchange between the user, the user does not need to install any additional applications that use it is very convenient.

In short, SIP, video middleware technology and Web-based video conforms to video development needs, perfectly meet people easy, fast and direct communication needs in the future of information technology development will have broader application.

Video middleware technology

Video middleware technology originated in the Internet2 middleware project organization, its video working group developed a digital video and related areas of middleware development planning, focusing on point-to-point and multipoint video conferences between resource discovery and user authorization, including video conferencing, video on demand, data collaboration, VoIP, and so video middleware research in the area.

Using video middleware's role is to be the top video application software provides operation and development of the environment, help users flexible and efficient development and integration of complex software applications, shielding the underlying operating system's complexity, the complexity of network programming, management, complex and ever-changing network environment, data of decentralized processing inconsistency, performance and efficiency, security and other issues, and provide public services to make the program developers face a simple and unified development environment, reduce the complexity of the program design, focus on your business, don't have to program in a different system software porting and duplication of efforts, thus reducing the burden on the technology.

For example, H.350 is the International Telecommunication Union (ITU), a new agreement, by itself, can be seen as a video middleware technology. The agreement is for storage and SIP, H.323 and H.320 voice and video endpoint information about the design of light Directory Access Protocol (LDAP) object-level specification. This information includes their IP addresses, aliases, and other connection-related information for centralized and integrated VoIP and video endpoints catalog, make it easier for users to find and connect with each other. Because the information is based on LDAP, and traditional enterprise directory, provide their employees with a phone or video endpoints to find colleagues and the unity of their connection. H.350 also by focusing each endpoint and users all configuration data for easy video conferencing network management. On this basis to build video conference system there will be many advantages: in a video conference system can mask the underlying complexity; the use of the media session directory service standards to store enough Terminal configuration information, flexible search user and its various information, video conference communication between users; you can implement a configuration details, licensing, certification, and enterprise-level associated with the directory service; offer multi-protocol support, and so on.

As another example, Qinhuangdao Dongda software company develops video conferencing middleware products, you can use it flexibly and video-related products, such as online medical system, live chat system, etc. In the development process for masks the video in the development process, simply based on leveraging the middleware provided by the secondary development interface, easily done put video to any video need corner.

Based on middleware technology for video conference system can be quickly extended to allow video conference system is included in the application. Therefore, the use of video middleware built video conference system has enough advantages, you can quickly build a personalized video application, implementation of network video collaboration features, video middleware technology stands for video conferencing.