View the four processes of Unified Communication Technology Development (1)

We have already learned a lot about the Unified Communication Technology. Do you know how enterprise communication develops in this aspect? Now let's review the development of enterprise communication. We will mainly introduce the integration and Unified Communication Technologies.

In general, the development history of enterprise communication can be divided into four stages: traditional communication technology, integrated communication technology, Unified Communication Technology, and intelligent communication technology.

In the early stages of the development of traditional communication, voice and data networks were completely isolated, and the two completed their respective functions. The voice network is based on the traditional TDM technology. After years of development, TDM provides multiple traditional value-added services, including call transfer, third-party calls, and permission control. Data Networks enable interconnection and information access between enterprises and branches.

At this stage, the communication network can meet enterprises' basic information communication needs and telephone communication needs. However, because there are multiple independent parallel physical networks, there is no connection between them, the construction and maintenance costs are relatively high, and the O & M is difficult.

According to the situation in China, apart from the construction of internal telephone systems by itself in specific industries such as power supply and public security, some of the general enterprises and institutions deploy their own data networks, most of the voice services are provided by local operators, mainly using Centrex services, which are widely used in China. Some small and medium enterprises build their own internal telephone systems by purchasing small group phone numbers and leasing carrier export lines. At this stage, Chinese enterprises face the choice of deploying their own PBX switches and Centrex services.

After a certain stage of enterprise informatization development, the Integrated Communication Technology prior to the Unified Communication Technology has already had a certain foundation for IP infrastructure construction and can provide a relatively guaranteed multi-service bearer quality. At this time, IP-based voice bearer has become a hot topic in Information Construction exploration. As the most fashionable technology, VoIP has received wide attention.

One of the most typical applications of VoIP is long-distance bypass, that is, the use of IP networks distributed across the branches of the enterprise to implement cross-regional voice communication traffic bearing within the enterprise, thus greatly saving the cost of long-distance voice. This networking method needs to be implemented and connected to the local public telephone network by using the Voice Gateway at the branch and headquarters.

The long-distance bypass Solution uses H.323 as the technical system. In terms of the system architecture, it mostly copies the traditional PSTN network architecture model, with a strong technical trace of PSTN. The solution includes the following main device types: terminals, gateways, and multi-service routers), network guard, and multi-point control units. Generally, complex control and business functions are provided on the core control nodes, most terminals are common analog phones and do not provide any smart features. Control features are hierarchical, master-slave, and centralized.

The voice quality of VoIP is gradually improved with the development of wide area network bandwidth and QoS technology, gradually reaching or approaching the level of traditional PSTN phones.

For enterprises, the cost of long-distance telephone is reduced, and the communication cost within the enterprise is greatly reduced. At the same time, a single network carries internal voice traffic and data services, and network facilities are fully utilized. For example, in the domestic public security industry, after using VoIP technology, you only need to build and maintain an IP data network internally, and the network facilities and bandwidth have been fully utilized, no need to deploy independent voice networks, saving the line cost and the cost of building and maintaining the PBX system.

The development of unified communication computer technology and communication technology has promoted a great variety of communication methods. Currently, we are surrounded by various information and are faced with various communication methods and methods. Mobile phones, landlines, faxes, text messages, e-mails, QQ/MSN, video conferencing, etc, how to select the most effective communication mode, how to avoid business interruptions due to changes in location and communication conditions, and how to achieve more effective and rapid communication effect has become a prominent demand for Enterprise communications. On the basis of VoIP technology, Unified Communication technology emerged.

Unified Communication: the general understanding of "unified" refers to the unification of media, time, location, terminals, and communication methods, users can communicate in real time and effectively regardless of the location, time, terminal type, operator network conditions, and information media type, efficient flow of text, images, and other media information. Unified Communication enables users to focus on communication methods, focus on communication efficiency, integrate various communication means, and integrate various information media, so that the communication system has the characteristics of being more effective, humanized, and intelligent.

The Unified Communication technology mainly includes the unification and integration of the two types of communication modes: voice communication and message communication. Voice refers to various internal IP voice services, including teleconference and call center) and carrier voice services, messages mainly include emails, faxes, text messages, instant messages, voice emails, and status presentations. Based on the IP technology, these two types of information services achieve the unification of communication information flow encapsulation, bearer, control, and presentation, laying a solid foundation for future intelligent communication.

The core component of Unified Communication is ip pbx and various smart communication terminals. The main protocol used is SIP. Ip pbx provides unified scheduling and Intelligent Control for various voice and messaging communication modes. Smart terminals present voice and messaging services to users, the most common types of terminals are IP phones and soft phones, that is, software installed on PCs to provide telephone functions. The SIP protocol is a distributed and horizontal control structure, which has become a factual standard for Unified Communication.