1. Overview

It is generally believed that a large enterprise refers to the enterprise with a number of employees from 1,000 to 10,000 persons or above. In our nation, large enterprises are mainly distributed across such industries as petroleum, electricity, radio & television broadcasting, military industry, manufacturing, highways and so on. As a result of the current intensification of global economic integration, such large enterprises have unexceptionally encountered unprecedented radical changes in terms of organizational structure, marketing and industry chain cooperation, where there has been a shift in their organizational structures from fragmented structures towards network distribution, as well as a changeover in their marketing & industry chain cooperation from longitudinal modes of operation towards horizontal cooperation.  Hence, it is required that the communication system functioning as a carrier of so many business operations satisfy the needs of such large enterprises under the new business modes.

2. Requirements of Communication Systems for Large Enterprises

First of all, communication systems for large enterprises can demonstrate stronger professionality in that they involve not only office communication systems, but also dedicated business communication systems, dispatching systems, monitoring systems and so forth, where available are such network forms as PSTN (Public Switched Telephone Network), mobile communication networks, paging networks and cluster networks, etc.      In the meantime, because stronger continuous requirements can usually arise from the business operations of large enterprises, any temporary stop of such operations can result in great losses. Therefore, large enterprises would have extremely high reliability requirements for communication systems carrying their business operations, while those critical businesses would even demand the availability of emergency communication systems.

Second, with the expansion and extension of their business operations, most of those large enterprises have established substantial branches and subsidiaries in different areas and countries, while there has been a shift in the corporate organizational structures of such large enterprises from the previous fragmented distribution towards the current network distribution, thus resulting in both the massive-scale horizontal organization and structures within such large enterprises and wider geographic distribution of such structures. Consequently, telephone communications have become very frequent within those large enterprises, while the charges of long-distance and international telephone communication have constituted a very critical expenditure for such enterprises. 

Nowadays, as the Internet has become very popular, the audio & video technologies based on the Internet have become increasingly mature as well. At the current stage, Internet access has been made available in nearly every large enterprise and its branches & subsidiaries, where the utilization of soft switch technologies to realize the network videophone conferences can be very instrumental for large enterprises to largely decrease their spending in communication, curtail their communication expenses, reduce their operation costs and increase the working efficiency of their employees. Hence, large enterprises tend to require the more powerful multi-media functions of their communication systems that can incorporate various broadband applications of both the telephone networks and Internet.    

Third, due to the presence of a number of widely distributed organizations within large enterprises, as well as the great differences between various departments of such enterprises, it is required that the communication systems therein have either the extremely strong distributed features, and convergence of heterogeneous networks, or the uniform and centralized management instruments.  

It is possible to rely on the centralized management to accomplish the flexible allocation of any communication resource at any work point in the distributed communication environment, thereby reducing the system maintenance costs.   

Therefore, large enterprises would require a communication system of high efficiency, flexibility, high performance and high scalability, through which to accomplish the secure and reliable voice transmissions between the headquarter and various subsidiaries, and in the meantime, to reduce the charges for long-distance calls and diminish the maintenance of networks to realize the overall reduction of operation costs of these large enterprises.

3. Donjin Communication System Solutions for Large Enterprises

The Donjin large enterprise communication system is a telescopic switch platform with low costs and broadband built on the basis of open architecture and standard software & hardware interface, as shown in figure below:

The Donjin large enterprise communication system can render the telescopic bearer channel processing functions of high performance and high reliability, which can take care of the processing and control of all bearing business flows. By virtue of its merits such as the broadband backplane, high integration level, high speed line interface, powerful processors and low product costs, this system can be particularly applicable to the processing of relevant switching applications (packet switching and circuit switching) and broadband & multimedia services to provide the centralized network telephone switching services to various branches spreading nationwide (including overseas agencies).  

Meanwhile, Donjin large enterprise communication system is a programmable switching system as well. With its low-level hardware and processing software constituting a programmable bearer environment, this system can provide such functions as interfaces (IP, TDM), bandwidth management, digital signal processing, protocol processing and adaptation, call control, function control, operation, surveillance and maintenance, etc; it can take full advantage of its merits such as the IP interface for programmable channel processing, channel processing function for digital signal processing and high reliability to lay a solid foundation for the individualized development of business applications and optimization of system resources.      

Meanwhile, Donjin large enterprise communication system is also an extensible switching system. On a single platform, it can develop in correspondence with the user demands, thus not only meeting with the current requirements for telephones, but also satisfying the continuously emerging needs for broadband services.