Chapter 2 Hardware Installation and Connections

IES-5000 Series User’s Guide

45

Figure 23   

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.

2.5.3  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.

Connect a Telco-50 connector to one end of the cable (see the User’s Guide for the individual 
line card for pin assignments) and connect the other end directly to an MDF; alternatively 
attach RJ-11 connectors and connect directly to DSL modems or telephones.

"

The cable shown below uses a 90-degree Telco-50 connector, where the 
cable extends from the side of the connector (at ninety degrees to the port). 
For rear-panel splitter chassis connections using the VOP-1248G VoIP line 
card, use a 180-degree Telco-50 connector (where the cable extends from the 
base of the connector directly opposite the port).