Go to www.Viking.com and select "discontinued products". Then select C 1000A. Download the PDF I & R manual and start studying. Viking guides are very well written and I'll bet you can get through it without much help from us. From what I see, you only have Door Phone 1 and Door Strike 1 hooked up. My guess is that it communicates with, and controls the gate. How it was integrated into the phone system, I cannot tell. But, after you read through the manual, I'll bet you'll know! Good Luck with your weekend assignment! smile


When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.