OK - if the PHONE1 light is NOT ON (or blinking), that means that SERVICE is NOT ACTIVE - and would explain why there is no dial tone or ability to take or make calls.
So what I would like you to do is RESET the U-verse box - one more time.
I don't know how you did it before, but the process I recommend is to remove the power connector from the BACK of the U-verse box and LEAVE IT DISCONNECTED for a FULL 2 minutes.
Then RECONNECT the power connector and WATCH (the lights on the front of the box) and WAIT for the lights to "stabilize" into a "normal pattern". Once stable, that PHONE1 light SHOULD be ON - and MAY be blinking.
Once that happens, it would be safe to TEST your phone - by either reconnecting the phone cord to the original phone jack (where it was before all this started), including any filter that was there.
Please give that a try and let me know your results - when you can.
NOTE: This power off reset WILL stop your internet connections, but don't worry, they should come right back after the reboot.
You should even be able to leave this page OPEN and simply REFRESH the screen of the computer to get right back here.
Thanks, ***** *****