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Network interface device

In telecommunication, the term network interface device (NID) has the following meanings:

1. A device that performs interface functions, such as code conversion, protocol conversion, and buffering, required for communications to and from a network.

2. A device used primarily within a local area network (LAN) to allow a number of independent devices, with varying protocols, to communicate with each other.

Note 1: An NID converts each device protocol into a common transmission protocol.

Note 2: The transmission protocol may be chosen to accommodate directly a number of the devices used within the network without the need for protocol conversion for those devices by the NID. Synonym network interface unit.

Source: from Federal Standard 1037C

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