LandLine - as to your questions about VOIP or copper - I'm assuming it means the use of a traditional telephone in the home, which would include VOIP if that's tied into your typical home phone. But again, these are crazy questions that need more information before you gather any meaningful information from the data.
Yeah, but landline doesn't MEAN that. If you have a landline over VoIP, would you even know? To a normal user, a landline is a phone to their house rather than their cell phone. Maybe to IT people we would just to the POTS conclusion, but that is not what the question asks nor what non-technical people would even be able to determine.
You're right to a non-technical person Laneline means your normal home phone. I know I am using VOIP, because Cox home telephone service is VOIP converted to copper in the home.
These days, tons of people are on VoIP and have no idea. Maybe half!
It totally makes since, why manage two separate networks if you don't absolutely need to.
I think some of these old school voice guys still want a security blanket where they don't have to think about a data network. Guess I can understand to a degree but you have to keep evolving to stay relevant.
More of a "they want a job since they aren't IT guys."