A system for managing collection of data and remote operation of fielded remote units is disclosed. The remote units may be incorporated in automatic meter reading systems, capacitor bank switching systems, power line fault detection units, power recloser units, surveillance systems, railroad switch heaters, or any of a multitude of systems wherein widely scattered devices require monitoring and/or operational commands. Each remote unit is provided with a CELLEMETRY.TM. transceiver, allowing the unit to receive commands from and pass data to a data center via the cellular control channel network and the Internet. The data center is organized to provide data related to a particular service to an associated customer user via the Internet, the customer users being utility companies, railroad companies, surveillance companies, and the like. Particularly, electrical, gas and water utilities may advantageously utilize Applicant's system for automatic meter reading, prepaid utilities, fault location in 3 phase power, preventative power outage monitoring, and power outage monitoring.