Digital Data Network ddnleased line VoIP network solution

In recent years, with the continuous development of communication technology, a new technology has emerged. It integrates voice technology with network transmission, enabling data transmission on the Internet, it can also transmit voice and images. It is widely used to give full play to the role of the network, reduce repeated investment in equipment, reduce costs, and reduce expenses. This is the VoIP technology.

VoIP is short for Voice Over IP. It is a completely new communication method that integrates Voice technology into the IP protocol and implements Voice transmission Over the INTERNET.

The VoIP technology has grown with the development of the interconnect network technology. It is a technology developed by Cisco, USA. It uses dedicated network devices that support voice technology, enables the combination of voice and data transmission to enable better voice transmission over the Internet.

Advantages of ddnleased line VoIP

A. Saving long-distance calls

For example, if the cost of a long-distance call from Beijing to New York is 18 RMB/minute and you use a traditional communication method), if your company has a DDN line from Beijing to New York, after using the VoIP technology device, you will be charged for the same phone number: 0 RMB. It can be seen that the VoIP technology saves us a lot of money.

B. reduce costs and consumption

If you are an enterprise that already has leased line network data transmission, you can use the VoIP technology, which will bring real help to enterprises, reduce costs and reduce consumption.

For an enterprise, it is very important to reduce expenditure and save costs. Using existing resources, further development and utilization, and giving full play to the efficacy of devices will bring real help to enterprises.

Currently, most enterprises have built multiple independent private networks, such as the data network and telephone network. With the continuous development and growth of Enterprise Services, more and more branches and the cost of various networks are also increasing, especially for telephone networks, which are implemented through the PSTN network, the use of a large number of faxes and telephones brings huge expenses and heavy burdens to enterprises. Therefore, the use of VoIP technology to attach voice technology to data network transmission, especially for enterprises with DDN data transmission services, is more economical.

Device Selection

We use vrouters of CISCO 1750, 26, or 36 series. CISCO1750/2600/3600 series Module Access Router is the best choice. The CISCO1750 router is a CISCO product that supports up to four voice interfaces. One-way fax machine and the other three-way long-distance voice services can meet the business needs of a small branch of about 10 people. It can be used on a ddnleased line no less than 64 KB. Providing services for voice, data, and fax services in a few places can reduce the cost of equipment investment.

CISCO2600 series switches support four voice and fax channels at the same time. Support for long-distance calls from branches with a moderate number or above, while CISCO3600 series routers support 12-24 voice interfaces. Therefore, you must use these routers on high-bandwidth network lines to ensure adequate voice lines, data transmission is not affected. It can meet the business needs of enterprise departments. If there are a large number of departments, you can consider using the CISCO5300 router as appropriate. Its powerful functions fully meet the business service needs of large enterprises. Because the CISCO5300 router is special, we will not consider it too much here.

With the continuous development of enterprise business, a leased line cannot be satisfied, and more leased lines are applied to the business activities of the enterprise. As the line increases, we use devices with different functions to implement the technical application of VoIP.

Because the DDN data transmission service mainly refers to the data transmission between the Enterprise Branch and the Headquarters, this forms a single-ended to multi-terminal situation, which is essentially not changed, but a continuation of the end-to-end, you only need to strengthen the transmission control function of a major end.

Because of the differences in the number of people in various departments, data transmission volume, line bandwidth, and other objective variables, the use of this type of router also requires specific analysis of specific problems, depending on the local situation to make a choice. Make the best use of the resources to prevent unnecessary capital investment.

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