We have a K3 and RRC at a group station used by several people. It has been working for a few years. Recently everyone is having the same problem where when they try to connect, their K3 at home stops with "TERM" displayed in VFO B window. Remote K3 powers on. Status screens say everything is connected, SIP Quality Excellent, etc. There is no indication that anything is wrong, but no audio gets to the user, and the radio controls do not work. Powering down the user's K3 powers down the remote radio. I've checked configurations at both ends and they look like they haven't changed. Ports 13000-13002 are still being forwarded by router at remote shack.
Any hints on where to look next?
Rick
N1RM