Ddn-digital Data Network

DDN (digital data network) is a digital data transmission network composed of digital transmission channels and digital cross-multiplexing devices such as optical fiber, digital microwave or satellite. It can provide users with a variety of high-quality digital data network (DDN Digital Data Network (DDN Road and other new services to meet the needs of users of multimedia communications and the formation of high-speed computer communication network. Digital data network mainly consists of six parts: optical fiber or digital microwave communication system, intelligent node or hub equipment, network management system, data circuit terminal equipment, user loop, client computer or terminal equipment. Its main role is to provide users with permanent and semi-permanent connection of digital data transmission channel, can be used for communication between computers, but also for the transmission of digital fax, digital voice, digital image signal or other digital signal. The digital data transmission channel of permanent connection is the exclusive bandwidth circuit that establishes the fixed connection between the users and the transmission rate unchanged. The digital data transmission channel with semi-permanent connection is non-commutative to the user. However, the user can make an application by the network manager to modify the transmission rate, the destination of transmitting data and the route of transmission. Network operators to the vast number of users to provide flexible and convenient digital circuit leasing business, for various industries to form their own private network. DDN provides a special circuit for semi-fixed connection, it is the basic telecommunication network for all dedicated users or private network users, and it can provide high-speed, point-to digital transmission for line users. The DDN itself is a data transmission network that supports any communication protocol and which protocol is used by the user (for example, x. or Frame relay). The so-called semi-fixed refers to the temporary establishment of a fixed connection according to user needs. For the user, after the application, the connection is completed, and the connection channel data transmission rate, routing and the use of the network protocol at any time can be requested to change.

DDN's main

Business is to provide customers with a number of digital data dedicated line, applicable to the interconnection of LAN/WAN, different types of network interconnection and video conferencing, such as the transmission of image services, as well as packet switching network users to provide access to packet switching network data transmission channels

DDN Solutions

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Ddn-digital Data Network