Source - I wrote internal software for a large call center outsourcing company right out of college. Back then the company I was a part of was actually pretty progressive. They let employees work split schedules, WFH way before it was cool, factored in things like reasonable breaks, etc...
The amount of data that comes off of automated dialers and inbound CMS systems can make for fun tech work, but it's still a pretty crummy industry which is why I left.