Main Distribution Frame


Also found in: Dictionary, Medical, Acronyms, Wikipedia.

Main Distribution Frame

(networking)
(MDF) The network closet containing the main hub.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

MDF

(1) (Main Distribution Frame) A wiring rack that connects outside lines with internal lines. It is used to connect public or private lines coming into the building to internal networks. In a telco central office (CO), the MDF is generally in close proximity to the telephone switch. See IDF, CDF and wiring rack.

(2) (Multiple Domain Facility) Hardware and microcode supplied by Amdahl that allows the running of multiple system images on a single processor complex. MDF was the first such implementation that did not depend on software such as VM/370 or VM/ESA.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
Mentioned in ?
References in periodicals archive ?
* Main Distribution Frames (MDF) which are the termination points where exchange equipment and terminations of local loops are connected.
Potential dismantling of the main distribution frames and its effects
Designing multiple main distribution frame (MDF) rooms also ensures the infrastructure's capability to withstand a disaster.
This stage allows mainly identifying those main distribution frame locations which are not economically accessible for the broadband access network and thus should be discarded accordingly.
The network at Chrysler's Kokomo site is designed as a fiber-distributed network, with the main distribution frame (MDF) in the data center.
The network at Chrysler' s Kokomo site is designed as a fiber-distributed network, with the main distribution frame (MDF) in the data center.
The single-mode fiber, configured in two rings above and below the main distribution frame (MDF) on the 12th floor, can provide very high bandwidth for tenants.