Tools And Supplies; Preparing The Main Distribution Frame - Vertical comdial DX-120 Installation And Maintenance Manual

DX-120 Installation and Maintenance Manual
Site Planning (continued)
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The following statements are from UL 1459, a product safety specification governing telephone equipment:
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Never install telephone wiring during a lightning storm.
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Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
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Never touch non-insulated telephone wires or terminals unless the telephone line has been disconnected
at the network's interface.
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Use caution when installing or modifying telephone lines.
CAUTION
Per Underwriters Laboratories regulation 1950, TNV wiring to outside plant leads (e.g. central
office trunk wiring) must be 26 AWG gauge minimum.

Tools and Supplies

Assemble the correct supplies and tools to install the Vertical DX-120.
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Use UTP (Unshielded, Twisted-Pair) three or four pair (recommended) cable to run from the MDF to all
extension terminals (DETs, DSS consoles, and analog devices). DETs only need one twisted pair to operate.
Additional pairs are always recommended to allow for future potential uses.
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Six conductor modular jack assemblies for all station instruments (recommended).
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Standard punch-down terminal blocks (66M1-50 type) as required.
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Four or six conductor crimping modular plug assemblies for each port interface.
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AC voltage surge/spike protector.
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Standard telephone hand tools and mounting hardware for the KSU(s), MDF backboard, punch-down terminal
block(s), modular jack assemblies for CO lines, etc.

Preparing the Main Distribution Frame

The MDF is the point at which the KSU, terminal equipment, CO lines, and miscellaneous equipment connect to
one another. It is extremely important that you make the connections carefully and accurately.
A
SSEMBLING THE
Follow these steps to assemble the MDF.
1) Mount a sufficiently sized, 3/4-inch plywood backboard at the proper location to use as the MDF
termination and equipment mounting board.
2) Plan the layout of all required MDF components allowing for expansion. This may include: KSU1,
KSU2, 66M1-50 termination blocks, cable fastening hardware, and miscellaneous third-party
communications equipment (paging equipment, etc.).
3) Locate the Telco-provided CO/Centrex lines at the DEMARC (Demarcation) and extend them to the
MDF location.
4) Locate a suitable, known-good earth ground preferably within 10 feet of the MDF and route a
#10AWG grounding wiring from the point of grounding to the MDF for connection to the KSU.
5) Install all telephone cabling and route to the MDF location for termination.
6) Mount all equipment and termination hardware as required to interconnect terminal devices and KSU
modules.
MDF
Preparing the Main Distribution Frame (continued on next page)
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I DX-120
NSTALLING THE