You should check the Audio forum. This is discussed there in a lot of detail. You'll find answers to your questions over there.I am looking into adding the Dension Gateway 500. This venture brings up a few questions that I, hopefully, can have some light shed upon.
1. Is this install straight foreward (for the most part).
2. What questions to ask when making the purchase
3. I dont see a phone backplate in the console so I would assume that I dont have that feature installed; will the optional Dension BTA 1500 for the Gateway 500 accomplish the same thing?
BTW Residence is USA.