Merloni can connect machines to a service centre via a phone line, making possible off-site billing, testing and the dispatch of an engineer who knows what needs fixing in advance.
Power was shut off along the line and service has been halted -- westbound past Bridgeport, which is about 60 miles northeast of New York City on the Long Island Sound, and eastbound beyond South Norwalk -- because of the derailment.
Pennsylvania has put off plans for various rail projects, including construction of a line that would provide 100-mph service between Scranton and Hoboken, N.