UPDATED: Good news, we are advised that the problem has been resolved as of Friday afternoon. Previous message follows:
There is a problem with audio not always being passed from East and NorthEast zones to other zones when linked. I.e. when linked, users in Moncton or Bathurst can hear audio from others around the province, and can hear each other, but others cannot hear them - users on the "other side" of the province only hear a silent carrier.