Hmmmm...
Maybe "OTL, or "OTC"?"... "Old Time" whatever.
Edison used and promoted DC current. It took Elia Thompson and his group to force use of the more efficiently distributed AC current, which Edison claimed was "dangerous." Out of that and litigation grew the GE corporation, first known as "Edison General Electric", I think. Well, when one has to explain his "humor", it sort of fizzles. 'back to work.
SK