Home phone upgrade to 4G not working, Calls not allowed on this line message
I followed the instructions, unplug and remove battery then wait 10-15 minutes (actually 30-45 minutes) Install battery into new device plug into outlet and press On button and wait for signal lights. Plug in phone. I have a dial tone. Make test call. Get prerecorded message telling me this call is not allowed on this line dial 611 or an 800 number for help. Dial 611 and get the same message. Called my home phone from my cell phone. My home phone did not ring and I was given the message that the mail box has not been set up. My home phone is an AT&T Model number EL52303.