In telecommunication, a combined distribution frame (CDF) is a distribution frame that combines the functions of main and intermediate distribution frames and contains both vertical and horizontal terminating blocks.
The vertical blocks are used to terminate the permanent outside lines entering the station. Horizontal blocks are used to terminate inside plant equipment. This arrangement permits the association of any outside line with any desired terminal equipment. These connections are made either with twisted pair wire, normally referred to as jumper wire, or with optical fiber cables, normally referred to as jumper cables.
In technical control facilities, the vertical side may be used to terminate equipment as well as outside lines. The horizontal side is then used for jackfields and battery terminations.
Famous quotes containing the words combined, distribution and/or frame:
“Today we all speak, if not the same tongue, the same universal language. There is no one center, and time has lost its former coherence: East and West, yesterday and tomorrow exist as a confused jumble in each one of us. Different times and different spaces are combined in a here and now that is everywhere at once.”
—Octavio Paz (b. 1914)
“There is the illusion of time, which is very deep; who has disposed of it? Mor come to the conviction that what seems the succession of thought is only the distribution of wholes into causal series.”
—Ralph Waldo Emerson (1803–1882)
“Adjoining a refreshment stand ... is a small frame ice house ... with a whitewashed advertisement on its brown front stating, simply, “Ice. Glory to Jesus.” The proprietor of the establishment is a religious man who has seized the opportunity to broadcast his business and his faith at the same time.”
—For the State of New Jersey, U.S. public relief program (1935-1943)