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Cabling Standards: Equipment Rooms and Per-Floor Telecommunications Room

Download PDF Version Cabling Standards

Cabling Standards Section Links

Introduction Communications Conduits and Information Outlets
Certifications & Req. Deliverables Communications Pathways Specifications
General Overview Per-Floor Telecommunications Wiring Systems
Service Entrance & Termination Room MDF Building Riser Specifications
Equipment Rooms (MDF/IDF) <= Grounding and Lightning Protection
Per-Floor Telecommunications Room (IDF) <= Power

Equipment Rooms (MDF/IDF)

Equipment Rooms are special purpose rooms that provide space and maintain a suitable operating environment for communications equipment. Equipment Rooms are generally considered to serve a building, where Telecommunications Rooms serve one floor or a section of a floor. The location should be so the room has access to the intra- and inter-backbone pathway and is accessible for delivery of equipment, away from potential sources of EMI, away from machinery that causes vibration, and away from steam pipes, drains, and clean-outs.  If the Equipment Room is on a different floor than the Service and Termination Room, it should be stacked above or below the Service Entrance and Termination Room.

Wherever possible, the room shall be dedicated to District’s ITS Department. The basic requirements for an Equipment Room shall be the same as those previously indicated for the Service Entrance and Termination Room, except as follows.

  • Required Area: Each Equipment Room shall not be less than the following size, depending on the total number of voice and data connection to be served from the equipment room.
  • Minimum area is 6' X 6' for a MDF with less than 100 voice and/or data connections.
  • Minimum area is 6' X 8' for a MDF with 100 – 200 voice and/or data connections.
  • Minimum area is 8' X 10' for a MDF with 200 to 300 voice and/or data connections.
  • Minimum area is 10’ X 12’ for a MDF with > 300 voice and/or data connections.
  • Conduits/Sleeves: Location, number, and size of conduits, and sleeves between the Service Entrance and Termination Room, Equipment Rooms, and Telecommunications Rooms will be specified by ITS during the design phase of the project.
  • Telecommunications Rack(s): Install a 96” high and 19” wide telecommunications rack, without panels, to support voice and data network terminations and equipment. Locate the rack(s) in the room so that there is sufficient space to work behind it for installation and maintenance.  The amount of services required to support the building may require more than one rack to be installed. Fasten the rack(s) to the floor and bond the rack or cabinet to the ground bus. Number and location of the racks or cabinets will be supplied during the design phase of the project.  Install a four-plex electrical outlet in one or more racks to support a UPS to be located on the floor within the rack frame. The size and number of the UPS will be determined during the design phase, along with the size, type and number of electrical receptacles.

Per-Floor Telecommunications Room (IDF)

A centrally located Telecommunications Room, not shared with other physical plant systems (or otherwise physically separated from these systems), shall be provided on each floor of the building wherever possible. A Telecommunications Room provides the connection point between the building backbone and horizontal distribution pathways.

The location shall be as close as possible to the center of the floor it is intended to serve.  This is to minimize the horizontal cable lengths and duplication of electronic equipment. The basic requirements for a Telecommunications Room shall be the same as those previously indicated for the Service Entrance and Termination Room, except as follows.

  • Room Locations & Spacing: Maximum distance between the Telecommunications Room on each floor and a telecommunications outlet is 295 feet, as measured per the cable pathway.
  • There shall be at least one Telecommunications Room per floor.
  • The Telecommunications Room shall have a means to access the per-floor wiring pathways.
  • The Telecommunications Rooms should be stacked above each other on the different floors. If rooms are not stacked, the Telecommunications Room shall have a means to access the Telecommunications Rooms on the floor above and below via metal conduits or sleeves.
  • Room Area: Each Telecommunications Room shall not be less than the following size, depending on the total number of voice and/or data connections being supported.
  • Minimum area required for < 100 voice and/or data connections is 4’ X 4'
  • Minimum area required for 100 to 200 voice and/or data connections is 6' X 8'
  • Minimum area required for 200 to 300 voice and/or data connections is 8' X 10'
  • Minimum area required for > 300 voice and/or data connections is 10’ X 12’
  • Conduits: Two 4" conduits shall be installed between Telecommunications Rooms located on different floors. One 3" conduit shall be installed between Telecommunication Rooms located on the same floor. Location of conduits, cable trays, and sleeves shall be coordinated with ITS staff. Conduits and sleeves shall extend 2" above floor level or through the wall.
  • Electrical: On each wall, except the wall containing the door, install two A/C 20-amp electrical four-plex outlets. In the larger rooms, 8’ X 10' and larger, install three A/C 20 amp electrical four-plex outlets evenly spaced along each wall.
  • Floor Loads: Floors shall be designed to support 2.4 kPA (50 lb'/ft2) minimum.
  • Telecommunication Rack(s) and UPS Outlet: Provide the same as the Equipment Rooms.
  • Smoke & Fire Sensors: Each Telecommunications Room shall contain a smoke/fire sensor as part of the overall building fire alarm system.
  • Cable Management: The ethernet cables will be terminated in the rack in patch panels with cable management. The specific part numbers of the patch panels and cable management devices are specified in this document.

 

 

Cabling Standards Section Links

Introduction Communications Conduits and Information Outlets
Certifications & Req. Deliverables Communications Pathways Specifications
General Overview Per-Floor Telecommunications Wiring Systems
Service Entrance & Termination Room MDF Building Riser Specifications
Equipment Rooms (MDF/IDF) <= Grounding and Lightning Protection
Per-Floor Telecommunications Room (IDF) <= Power
 

 

Updated February 9, 2006