Denvil

The jokes about the phone connection and Zeus is that 505A can be read as 505 amps, an electrical measurement for current. 505 amps is quite a lot, especially in the context of being for a phone. 505 amps is about equivalent to 20 1200 watt microwaves running at the same time (120V).

Back in my day, our phones were powered by the wrath of Zeus. We had to anger him BOTH WAYS to get some lightning to call and hang up.