MDF -- Main
Distribution Frame. A wiring arrangement that connects external telephone lines on one side and the internal lines on the other.
These multicore circuits can easily be broken out into individual fibres through optical
distribution frames or in the sort of passive, self-normalling patch panels that broadcast engineers find very familiar.
* Local loops which are the copper pairs between final DSL subscribers and the main
distribution frames.
ADC's OMX 600 Optical
Distribution Frame is a front-facing, high-density frame that is designed for protecting, managing and enhancing optical networks.
Fiber-optic cable was used from the main
distribution frame in each facility to the intermediate
distribution frames, while Category 5 UTP copper wire was used from the IDFs to the desktops.
NGN access in the fixed network is initially broadband access (based on the copper loops between the Main
Distribution Frame (MDF) and the end user's home), but is in the process of being enhanced over time in many countries to provide higher speed using fibre-based technology such as "Very High Speed DSL" (VDSL; Fiber-to-the-Cabinet, FTTC) or "Fibre-to-the-Building/Home" (FTTB/H) and possibly also enhanced security and improved ability to distinguish among different "Quality of Service" (QoS) requirements.
The backbone in each school consists of: fiber, coax and copper for voice connected to the buildings' phone demarc, all run between the Main
Distribution Frame (MDF) and Intermediate
Distribution frames (IDF).
* Develop multiple main
distribution frame (MDF) rooms.
Strategies regarding next generation access have triggered discussions in a number of countries (predominantly in the Netherlands) with respect to the future of the main
distribution frame in the incumbent's network.
"I wanted to ensure that everything--from the design to all the components--in the data center, the main
distribution frame (MDF) and intermediate
distribution frames (IDF) created a failsafe network.