Does Asterisk have inbuilt Attendant Console?
Im not sure what you need. If you need check if user are in call/free/ringing you could use from cli ‘core show hints’ and yes you could set it on your phone, for this look for BLF (Busy Lamp Field)
Not as would be normally understood. There are third party products, and Asterisk has been used as the core of an attendant console for other PABXes, as well.