Mediant 1000B Gateway & E-SBC
Hardware Installation Manual 46 Document #: LTRT-41441
4. Provide primary surge protection, by installing additional three-electrode Gas
Discharge Tube (GDT) rated 350V as a primary protection on the MDF, located at the
entrance point of telephone wiring to the building. The center pin of the GDT must be
connected to ground as shown in the figure below:
Figure 5-8: FXS Cabling for Outdoor Routing
5. Connect the telephone line from the MDF to your analog equipment.