I have the same issue. The landline rings a halftone and then disconnects at 5 seconds. No help from Xfinity as no one is home!
I can receive calls. But, I can't dial out!
This needs to be fixed ASAP!!! It's been like this for 3-4 days now!!
Try calling get message my home phone is no longer active. I'll call get message and a minute later the home phone rings but my cell shows a differernt number than what I called?????