That was back in the days when some systems didn't have voice mail. "They'll answer the damn phone!"
ONS and COV integrations. Even did some with E&M integration.
I remember the pain of backing up and loading software to/from 8 inch floppies.
Then tape. If I remember correctly, there was a bug in the backup software in one of the first versions of the light where it looked like it backed up but didn't. That caused us to have to reprogram a switch from scratch.
BTW: I take credit for installing the first non-beta Light Switch in the US. Another dealer in CA cut over the same day but we're 4 hours ahead.
Ralph