4 Write the telephone number assigned to each of the line jacks next to the number for that line jack on the outside line numbers label found on the inside of the control unit’s front cover or on the inside of the left door of the jack field box containing the outside lines.
WARNING: National and local building codes specify the type of cable required for telecommunication wiring. For example, indoor wiring (DIW) cannot be used inside or on top of air plenums or ducts, along hot pipes; or across walkways. Consult your local ordinances and regulations for proper cable selection.
If staples are used to attach the cords to walls or baseboards, check that the cords have not been pierced. Also, do not run Central Office lines from the network interface to the control unit if the distance if greater than 25 feet.
TIE LINE MODULE The interface from the Tie Line Module to the network
WIRINGfacility is provided through modular jacks. Each modular jack provides an electrical interface to the network that consists of six leads: T (pin 5) and R (pin 4) are for outgoing analog transmission; T1 (pin 1) and R1 (pin 2) are for incoming analog transmission; and E (pin 3) and M (pin 6) are for signaling. Figure
WARNING: The protected mode must be used whenever the E&M leads extend
