OCM Module Port Clock Source State. Indicates the Port Clock Source. 2 - Port 1 - Module Clock Source is port 1 3 - Port 2 - Module Clock Source is port 2 4 - Port 3 - Module Clock Source is port 3 5 - Port 4 - Module Clock Source is port 4 6 - Port 5 - Module Clock Source is port 5 or Trunk port according to module type 7 - Port 6 - Module Clock Source is port 6 8 - Port 7 - Module Clock Source is port 7 9 - Port 8 - Module Clock Source is port 8 10 - Port 9 - Module Clock Source is Trunk port