connection-oriented network service
A network service that establishes logical connections between end users before transferring information. [T1.110-1987]
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Description
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connectionless network service
A network service that transfers information between end users without establishing a logical connection or virtual circuit between those specific users. [After T1.110-1987]
Corporation for Research and Educational Networking
See CREN.
data communication network (DCN)
A configuration of telecommunication facilities for the purpose of transmitting data, as opposed to analog signals. [After T1.210-1989]
Data Network Control Center (DNCC) or Equivalent
Is the name used to describe the center which administers and maintains Data Networks (e.g., X.75 Gateways).
data network identification code (DNIC)
In the ITU-T International X.121 format, the first four digits of the international data number, the three digits that may represent the data country code, and the 1-digit network code, i.e., the network digit.
Defense Data Network (DDN)
A component of the Defense Communications System used for switching Department of Defense automated data processing systems. [JP 1-02]
Defense Switched Network (DSN)
A component of the Defense Communications System that handles Department of Defense voice, data, and video communications.
Delivery Network
A set of physical transport/access networks.
Delivery Network Gateway
A device implementing the Delivery Network Gateway Function. The DNG may also be termed the RG (Residential Gateway) in other standards bodies.
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