4 user/co ports, Figure 8 telco-50 cable with rj-11 connectors – ZyXEL Communications IES-708-22A User Manual
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Chapter 3 Front Panel
IES-708-22A User’s Guide
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3.2.4 USER/CO Ports
Use a Telco-50 connector to connect the USER/CO ports to other SHDSL devices. The rest of
this section introduces Telco-50 cables, MDF (Main Distribution Frames), and explains how to
connect the USER/CO ports to MDF.
3.2.4.1 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 hardware specifications
appendix for pin assignments) and connect the other end directly to an MDF, RJ-11 connectors
or directly to DSL modem(s).
Figure 8 Telco-50 Cable with RJ-11 Connectors
See
for pin assignments.
3.2.4.2 Main Distribution Frame (MDF)
An MDF is usually installed between end-users' 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 lines in the building.