Tadiran Telecom Emerald ICE Installation Manual page 53

Preparing the Main Distribution Frame
The Main Distribution Frame (MDF) is the point at which the KSU, terminal
equipment, CO lines, and miscellaneous equipment are connected to one another.
It is extremely important that the connections be made carefully and accurately.
The MDF is where the KSU is located.
Assembling the MDF
Follow these steps to assemble the MDF.
1. Mount a sufficiently sized 3/4‐inch plywood TMB (Telephone Mounting
Board) at the proper location for use as the MDF termination and
equipment mounting board.
2. Plan the layout of all required MDF components allowing for expansion.
This may include: KSU3, KSU4, 66Ml‐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 #10 AWG grounding wiring from the point of
grounding to the MDF for connection to the KSU. (See photo example.)
Install all terminal device wiring (telephone cabling) and route to the MDF
location for termination.
5. Mount all equipment and termination hardware as required to complete
interconnection of terminal devices and KSU ports.
KSU Components and Installation
The Key Service Units (KSU) are shipped in their own protective master carton
and contain the following components:
KSU3
• 1 Mounting Template
• 1 System Resource CD (Includes RMP and Documentation)
• Standard 610+2 Board equipped with 6 CO Line ports 10 digital extension
ports, Two Analog Device ports/Door Phone ports and 1 CO Line PF (Power
Failure) port.
• Standard CCB (Central Control Board)
• 1 hardware packet
Emerald ICE Installation & Hardware Reference Manual
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