ZyXEL Communications IES-1248-51 - Figure 20 Installation Scenario B; Procedure to Connect to Mdfs

IES-1248-51/51A/53 User’s Guide
Chapter 4 MDF Connections 65
• 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.
Note: Change the wiring from MDF 1 to MDF 3 for telephone subscribers who want
DSL service.
Figure 20 Installation Scenario B
4.6.2.1 Procedure to Connect to MDFs
1 Connect the Telco-50 connector end of the cable you want for DSL service to the Telco-
50 connector labeled USER.
2 Connect the wiring on the other side of the Telco-50 cable to the upper ports of MDF 3
using a punch-down tool.
3 Connect the telephone wiring from the end-user’s DSL modem(s) to the lower ports of
MDF 3.
4 Connect the Telco-50 connector end of the cable you want for phone service to the Telco-
50 connector labeled CO.
5 Connect the wiring on the other side of the Telco-50 cable to the lower ports of MDF 2
using a punch-down tool.
6 Connect the upper ports of MDF 2 to the lower ports of MDF 1 using telephone wires.
7 Connect the upper ports of MDF 1 to the telephone company.
8 Telephone subscribers only (non-DSL subscribers) retain connections to the lower ports
of MDF 1.