IES-5000 Series User’s Guide
Chapter 3 Hardware Installation and Connections 39
3.5 MDF Connections
This section shows you how to connect the IES-5000 splitter chassis to a Main Distribution
Frame.
3.5.1 MDF Connections Overview
Observe the following before you start:
•Refer to Section 2.1.3 on page 24 for the gauge of telephone wire to use.
• Follow the pin assignments shown in the line card User’s Guide to wire Telco-50 cables
to Telco-50 connectors.
3.5.2 MDF (Main Distribution Frame)
An MDF is usually installed between subscribers’ equipment and the telephone company
(CO) in a basement or telephone room. The MDF is the point of termination for the outside
telephone company lines coming into a building and the telephone wiring in the building.
Figure 19 MDF (Main Distribution Frame) Wiring
• Connect wiring to end-user equipment to the lower ports of an MDF and connect wiring
from the telephone company to the upper ports of an MDF (see the previous figure).
• Some MDFs have surge protection circuitry built in between the two banks; thus, do not
connect telephone wires from the telephone company directly to your IES-5000.
• Use a punch-down tool to seat telephone lines into MDF blocks.
3.5.3 Telco-50 Cables
Telco-50 cables are used for data and voice applications with MDFs (Main Distribution
Frame), patch panels and distribution boxes. They can also be used as extension cables. Telco-
50 cables are made up of 25 twisted-pair copper wires.
