A:AnswerNumbers do come through the LED readout.
You'll need to set up your Directory so it can identify the incoming calls you want.
You will have a BLOCK button as well for those annoying calls.
A:AnswerThe AT&T 6.0 Cordless telephone systems DLP73210/73410/73440/73540 does have functionality for up to 2 Blue Tooth devices including a headset. You can only have 2 paired devices connected to the phone. check https://telephones.att.com/bluetooth - this will provide you with the information.
you can
A:AnswerMost caller names will display. Although some cell phone calls don't have a name, if they're friends whose number you save in the directory, they will show afterwards.