I think you misunderstood my use of the word "standard". I did not mean "standard" in the sense of complying to some particular RFC or anything like that. I mea

I think you misunderstood my use of the word "standard". I did not mean "standard" in the sense of complying to some particular RFC or anything like that. I meant that some kind of feedback/monitoring capability is de rigueur for that product segment, and that feature needs to be listed on the spec sheet for the product to be considered adequate. Even a completely proprietary network printing protocol needs to have a status reporting capability to be taken seriously.