Think of it as a telephone line. They do fine for tens of miles. And you have no signal integrity concerns, merely continuity. (Though being able to launch a TD

Think of it as a telephone line. They do fine for tens of miles. And you have no signal integrity concerns, merely continuity. (Though being able to launch a TDR pulse down it would be neat, since localizing breaks would become trivial.) I wonder if a fiber would meet the definition...