Abstract: The network interface unit includes a two compartment housing and a pair of commonly hinged covers. The outer cover protects the entire network interface and other telephone utility circuits from the weather, while the inner cover prevents the customer from accessing telephone utility company circuits. The outer cover may be locked in the closed position to the inner cover, and the inner cover is independently secured to the rear of the housing so that authorized telephone technicians can gain access to both compartments without the need to detach the outer and inner covers from one another and without the need to open a customer supplied padlock. The network interface unit housing provides a variety of component mounting structures enabling the housing to hold a variety of different modular components.