I have 2 door phones on a cics sw7.1 I need it to ring all phones. Everything is in page zone 1. In the programming I see answer dn, when I go to show it say show set- do I put the answer dn of the thier, also can I put more than 1 answer dn per station phone. Do I need an unused port also to do this, it worked fine on the 616. Thanks