Mdf Connections; Mdf Connections Overview; Mdf (Main Distribution Frame); Telco-50 Cables - ZyXEL Communications IES-5000 Series User Manual

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
• 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.
Chapter 3 Hardware Installation and Connections
Section 2.1.3 on page 24 for the gauge of telephone wire to use.
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