On the integration of IP voice and traditional net

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Talking about the integration of IP voice and traditional network

network only digital display electronic experimental machine is suitable for users who only seek force value, tensile strength, compressive strength and other relevant data. Is it only infrastructure? TBS type spring tension and compression testing machine is mainly used to do tension and compression experiments on various coil springs. However, the current application has prompted the network to bear a greater burden. There are still some standard problems in integrating IP voice into the traditional network. What will happen in the future? When is it no longer in the traditional sense? VoIP answers this question for people

100 years ago, all kinds of signals were transmitted through copper wires, and later radio and television signals were transmitted directly in the air. By the 1960s, multi band video signals began to be transmitted through coaxial cables. VoIP is a voice transmission technology based on modern networks rather than the traditional copper wire in the past. Its emergence enables users to transmit voice with the help of two PCs, or transfer the voice on the PC to the Internet. Interactive game lovers can also communicate with each other with the help of high-tech controllers

manufacturers and users have recognized the advantages of deploying VoIP, and many manufacturers have developed relevant products and solutions to meet market demand, which can be described as a variety of ways to achieve

switches emphasize multi-function integration

early VoIP solutions are relatively complex and have relatively single functions. Due to the continuous progress of technology, highly integrated communication servers (integrating communication/video/data/fax servers) have emerged. Modern integrated communication equipment integrated with voice/data/video multimedia services will have a large market

media switches integrate voice, data, fax, video applications and IP voice. It integrates the enterprise multimedia communication functions into a compact system, provides standard interfaces for all connections, integrates the functions of many independent devices, and provides an economical and easy to expand solution for enterprise level communication needs, It integrates the functions of Internet gateway (including switching and routing) and PBX (including line interface, continuous improvement of industrial batch production management system, analog line, automatic operator, voice mailbox and automatic traffic distribution), and supports video

sip has gradually become the mainstream of the market

at present, there are three main technical standards adopted by VoIP: H.323 and related protocols, MGCP protocol and SIP protocol

h.323 protocol is a proposal proposed by ITU-T for multimedia conference system. It is not specially proposed for VoIP. It is a complex protocol, and its upgrading and scalability are not very good. MGCP and megaco/h can reflect product quality by measuring nano materials 248 is a media gateway control protocol developed by IETF and ITU-T respectively, which is used for the communication between the media gateway controller and the media gateway. H. The 248/megaco protocol is the product of the concept of separation. The core of the relationship separation is the separation of business and control, and the separation of control and bearing. In this way, the business, control and bearing can develop independently, and operators can provide rich and colorful services while making full use of new technologies. SIP is a signaling protocol for Internet Conference and developed by IETF. It is a protocol specially designed for IP, especially for Internet. Compared with the traditional H.323 protocol, SIP has obvious advantages: good scalability; It is closely combined with the Internet to make communication easier and convenient; It can provide good support for mobile devices such as, PDA, and can well realize multimedia applications such as instant communication, voice and video data transmission

in the current market, H.323 is widely operated due to its long development time, but its implementation is complex and its compatibility is poor. MGCP is mostly the main supporting protocol in the soft switch platform for operators, but MGCP only supports voice transmission and does not support the transmission of multimedia data such as images, so its application and development will be limited. Because SIP is simple, universal and easy to expand, it has gradually developed into a mainstream protocol. At present, it has been adopted by 3GPP as the only call protocol. Many communication companies have launched products that support sip. Major IP manufacturers, such as Cisco, Lucent, Alcatel, etc., have launched software and hardware terminal products based on SIP protocol. Microsoft's MSN and net meeting all use SIP as their communication protocol. It is conceivable that SIP will become the mainstream of the market, and supporting SIP will become an important standard for VoIP solutions and products

integrating WLAN and VoIP

wireless local area network and network were both high-profile new technologies last year. Equipment manufacturers launch new products to help enterprises integrate these two technologies. Richardwebb, an analyst in charge of wireless local area network at infonetics research, said: "Wi Fi and network are very powerful technologies. When the two technologies are combined, their power will be even more amazing. The result is like one plus one equals three." Equipment manufacturers have identified these two application markets and worked hard before. Alcatel, Nortel and Cisco have all launched wireless products. Alcatel said that it was ready to sell airespace's wireless network switches, wireless base stations and related equipment under the omniaccess product line. At the same time, the new products will also comply with the 802.11a/b/g standard. 802.11 a/b/g supports stronger security functions, higher transmission specifications and networking functions


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