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This article describes a local area network (LAN) adaptor card that allows common software and protocol oriented hardware to be attached to different types of media by way of a pluggable media.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
95% of the total text.
Page 1 of 1
Pluggable Media Interface for Local Area Network Adaptor
This article describes a local area network (LAN) adaptor card that allows
common software and protocol oriented hardware to be attached to different
types of media by way of a pluggable media.
With regard to the layers in which low level protocols are formatted and
presented to media attachment hardware, there is a point at which formatted
data is in a common form (such as binary NRZ). It is desirable for a
manufacturer or a user of networks, to be able to take data from this point in the
system and easily apply it to different media, depending on the application.
The drawing shows a representation of a personal computer adaptor card for
use in a LAN. The card contains an implementation of a specific LAN protocol
with interfaces to upper level protocols and an interface to a connector through
which the data is passed to the physical media.
The circuit that plugs into the connector may provide access to any type of
transmission media. For example, the pluggable circuit may accept binary NRZ
data at the connector and modulate (and demodulate) it on an RF carrier for a
broadband application. The pluggable circuit may translate the signal at the
connector into a baseband compatible signal, or a light signal for attachment to a
The pluggability of this part of the communication system allows a
manufacturer to create multiple LAN adaptor products by developing the protocol
controller once and developing s...