Where did you see there "it is using BIOS emulation with a bootloader and SLIC" ? If you're confused with word "offline" - in this particular case it means phone activation: you receive confirmation code by phone and then manually put it in slmgr.vbs -atp command, that's how it works.
Yea I just meant to say --IF--- it's using BIOS emulation then confirmation is not needed. I don't think confirmation code comes from a phone since it is hardcoded into that image. So what is "NSLP channel" Is this a legal version and not cr__ked at all?