I have a Polycom Viewstation FX that has a warning label on the blue interface socket: "Connect only to viewstation IMUX. Failure to do so will result in system damage".
In fact this blue socket provide a strange RJ45 with a key index pin. What does it means ? Can I plug there a normal quad BRI interface, with a green RJ45 socket, allowing the set to work with ISDN ?
Is this a special Viewstation FX version that works with IP only ? How can I identify the type or version ?
Thanks for your help