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Central Office Products

Central Office Products

Fibre Optic Main Distribution Frame / Fibre Connectivity

Innovative fibre-optic main distribution frame systems must make precise allowance for the particular demands of fibre-optic conductors, for example a high level of compactness, whilst retaining clarity. Easy upgradability and maintenance during operation are further requirements to be fulfilled by a modern system.

3M Telecommunications' Main Optical Distribution Frame (MODF) forms the link between the active system and the fibre optics. It is suitable for terminating fibre optic conductors from the local loop and connecting them to the system.


  • Maximum capacity of 384 fibres at both the system and line ends
  • Rapid installation and removal of various fibre optic modules
  • Hinged bays for simple installation from the front
  • Modular frame structure, erectable in sideway rows

In 2002, 3M Telecommunications launched the Fibre Main Distribution Frame 2000. This allows the use of connector, splice and breakout modules in one ETS frame. The integrated single fibre management system (optional) ensures the utmost operational reliability of the individual fibre optic connections. Click here for further information.

Co-Location Racks

Many network operators and local city carriers have become new players on the liberalised telecommunications markets.

This development has led 3M Telecommunications to design new, innovative connection and distribution systems which allow all network operators to access the local loop in order to offer their customers their own services.


  • Distribution Cabinet (indoor/outdoor) for collocation and interconnection
  • Simple integration of different connection systems (analogue, ISDN, 2 Mbps, 34 Mbps or 155 Mbps services on copper wire, coaxial cable or fibre)
  • Accessories
  • Network and surge protection for electronic installations are as much a part of our range as load-dependent surge protection.
  • The modular two-pair structure ensures longitudinal and transverse voltage protection with a choice of suitable protective modules.

Simple contacting in a confined space is possible using the three ranges of PCB connectors. They are used wherever contact is to be made with printed PCB conductors or copper cores.

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