Ring Intercom on Mircom IS-489: False Alerts When Neighbors Use Buzzer or Door Unlock

Hi all, I’ve installed a Ring Intercom on my building’s Mircom IS-489 analog intercom system, and while it works for unlocking the main door and receiving notifications, I’m running into a problem: I get alerts even when neighbors are being buzzed or when they unlock the door — even though no one is at my unit. Here’s what I’ve found during testing: My intercom has 4 screw terminals (typical for IS-489). I have 8 wires total — 2 wires per line. Terminals 1–3 are clearly shared lines (looped from unit to unit). Terminal 4 appears to be dedicated to each unit, as only it carries the ring signal specific to my apartment. I disconnected the daisy-chained (outgoing) wire from Terminal 4, leaving only the one coming from the main panel, so it should only carry my ring signal. Despite this: Ring Intercom still alerts me when neighbors are called or unlock the door. I suspect it is reacting to shared line activity on Terminals 1–3. There are no advanced filtering or sensitivity settings available under “Analog HDX” mode in the app. Has anyone found a way to make Ring Intercom ignore shared line activity and only respond to their own unit’s buzzer signal? Or is Ring working on a firmware or software solution to filter these false positives? Any tips from Ring staff or other users with Mircom setups would be greatly appreciated. Thanks!