ZyXEL Communications IES-2500, User Manual, Page: 38 / 65

IES-2500 User’s Guide
5-4 MDF Connections
5.6.2 Installation Scenario B
Phone service is available. There is one MDF from which end-users CO connections are made (see next figure).
Figure 5-4 One MDF for End-user and CO Connections
This installation scenario requires three MDFs. Please refer to the following figure for the connection schema.
MDF 1 is the original MDF used for telephone connections only.
MDF 2 is used for telephone connections only.
MDF 3 is for DSL service connections.
Change the wiring from MDF 1 to MDF 3 for telephone subscribers who want DSL service.
Figure 5-5 Installation Scenario B