The KSU site is ATT fiber with cisco switches that ATT has installed and configured. The modem/router at the home is a Motorola NVG589. Early in the game I did give here a new phone and POE adapter that she is still using. I did experience the issue for myself yesterday. I went to the home and ran debug on the system while using the phone. If you pressed prog/help on the phone the phone just keeps on walking you thru the help menu even after you press a digit. So it appears that the phone is still connected and communicates somewhat.