Yes, it does. Thank you a lot!!! 'More like a hundred and fifty these days,' I said. 'It's a big success. I understand they're thinking of opening one out in California and calling it Mouseville West, that's how much business is booming. Trained mice are the coming thing with the smart set, I guess—I don't understand it, myself.' The Green Mile by Stephen King

The farmhouse was on the exchange - another sign to the neighbors that the Dettericks were prospering, at least moderately, in disastrous times - and Marjorie used Central to call as many of her neighbors that were also on the exchange as she could, telling them of the disaster which had fallen like a lightning-stroke out of a clear sky, knowing that each call would produce overlapping ripples, like pebbles tossed rapidly into a stilly pond. Then she lifted the handset one last time, and spoke those words that were almost a trademark of the early telephone systems of that time, at least in the rural South: “Hello, Central, are you on the line?” They talk about a telephone exchange, it's clear from the context. Does it mean they were connected to it or they lived near a telephone facility.