I have the situation where I want to replace an old key switch with a UC500. The only outstanding issue I have is an inbound ring feature enabled by the provider. The way it works is the customer has 2 phone lines that are members of a service provider hunt group. When they dial the pilot the first line rings and if it is busy the second line rings, no big deal. The issue is that the published fax number is the second line in the hunt group. So if the call comes in directly to the fax number the service provider gives it a distinctive ring, this is currently how the customer knows not to answer the phone and let the fax machine get it. With a UC500 implementation I would like to make this all transparent to the user. So here is my question, is there a way to route the call to the fax machine based off the fact that it rings in with this funny tone from the provider?