On the integration and development of VoIP speech technology and traditional networks

Is the network only an infrastructure? Obviously, the current applications have prompted the network to shoulder greater responsibilities. There are still some standard problems to integrate IP speech into traditional networks. What will happen in the future?
When is the call no longer a traditional call? VoIP answers this question.
All kinds of signals were transmitted through copper wires before January 1, 100. Later, radio broadcast and television signals were transmitted directly in the air. By 1960s, multi-band video signals began to be transmitted through coaxial cables. However, VoIP is a technology that uses modern networks instead of traditional copper wires to transmit voice. Its emergence enables users to transmit voice using two PCs, you can also transfer the voice on a PC to a mobile phone. interactive game fans can also use high-tech controllers to communicate with each other.
Vendors and users have recognized the advantages of deploying VoIP. Many vendors have developed related products and solutions to meet market requirements. There are various implementation methods.
Vswitch emphasizes multi-function convergence
Early VoIP solutions were relatively complex and feature-specific. As the technology continues to improve, a highly integrated communication server integrates communication, video, data, and fax servers. Modern integrated communication devices with Voice/Data/video multimedia services will have a large market.
The media switch integrates voice, data, fax, video applications, and IP voice calls. It integrates enterprise multimedia communication functions into a compact system, provides standard interfaces for all connections, and integrates functions of many independent devices, it provides an economic and easy-to-expand solution for enterprise-level communication requirements, integrating Internet gateways, including exchange and routing) and PBX, including line interface, analog line, automatic operator, voice mailbox and automatic traffic assignment), and support video phone.
Gradually becoming mainstream in the market
At present, there are three main technical standards used by VoIP: H.323 and related protocols, MGCP protocol and SIP protocol.
The H.323 protocol is a proposal proposed by the ITU-T for multimedia conferencing systems, not specifically for VoIP, is a complex protocol, upgrade and scalability is not very good. MGCP and Megaco/H.248 are media gateway control protocols developed by IETF and ITU-T respectively for communication between media gateway controllers and media gateways. The H.248/Megaco Protocol is a product of the concept of gateway separation. The core of gateway separation is business and control separation, control and bearer separation. In this way, the business, control, and bearer can develop independently. operators can make full use of new technologies while providing a variety of services. SIP is a signaling protocol developed by IETF for Internet Conferences and telephones. It is a protocol specially designed for IP phones, especially when it is integrated with the Internet. Compared with the traditional H.323 protocol, SIP has obvious advantages: good scalability; close integration with the Internet makes communication easier and more convenient; it can provide excellent support for mobile phones, PDAs, and other mobile devices, and can well implement online instant communication, voice and video data transmission and other multimedia applications.
In the current market, H.323 is widely operated due to its long development time, but its implementation is complicated and its compatibility is poor. Most MGCP protocols are supported by carriers in the softswitch platform. However, MGCP only supports voice transmission and does not support the transmission of images and other multimedia data. Therefore, its application and development are limited. Because of its simplicity, versatility, and scalability, SIP has gradually become a mainstream protocol and has been adopted by 3GPP as the only call protocol. Many communication companies have successively launched SIP-based products. Major IP phone manufacturers, such as Cisco, Lucent, and Alcatel, have launched software and hardware terminal products based on the SIP protocol, microsoft's MSN and Net Meeting both adopt SIP as their communication protocols. As you can imagine, SIP will become the mainstream in the market, and supporting SIP will become an important standard for VoIP solutions and products.
Integrate WLAN and VoIP
Wireless local area networks and network telephones were both high-profile new technologies last year. The device manufacturer launches new products to help enterprises integrate these two technologies. Richard dwebb, analyst at Infonetics Research in charge of Wireless Local Area Networks, pointed out: "Wi-Fi and network phones are both very powerful technologies. After the two technologies are combined, the power will be even more amazing. The result is like one plus one equals three ." Equipment vendors have already been able to see these two application markets and have worked hard. Alcatel, Nortel and Cisco all launched wireless products. Alcatel said that he was going to sell Airespace wireless network switches, wireless base stations and related devices under the OmniAccess product line. The new product will also comply with 802.11a/B/g standards. 802.11 a/B/g supports stronger security features, higher transmission specifications, and network phone functions.