A technique efficiently manages bandwidth for multipoint-to-multipoint services in a provider network of a computer network. The circuit-interrupting device includes a gearbox, a load-breaker in series with a visible disconnect, and an assembly driving the visible disconnect between an open state and a closed state. Each of the first and second signals is transmitted at a first time. Each of the voltage signals comprises a common component and a different signal component. Both prostheses permit lateral adjustment and adjustment to accomodate interpedicle distance.