The aim of the invention is to produce a network-independent definition and control of services which permits the carrying out of all services on networks connected to the service controller. The setting frame has sidewalls and a cavity. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proximate the coil so that the plurality of moveable contacts selectively make or break electrical contact between the winding pins to select coil voltage. Interference calculation techniques preferably involve baseband digital processing using defined channel gains, permitting rapid evaluation of reverse link capacity and quick, reliable activity indicator updating, which increases reverse link capacity utilization.