I have a IPOv2 8.1 with scn license and another (spare unit) 9.1 also with scn license, managed to get them both communicating and working fine. However I need the 8.1 to communicate with a different (working) unit without scn license, is there a simple way of making them communicate or must the working 9.1 have a scn license. Can I transfer the scn license from the spare to the working system.