@TP-Link_Deco 1. Who is your ISP? Eir 2. What is the detailed network diagram/layout? Is it like below? GPON ONT > Main Deco > 8 port gigabit switch > secondary Deco M9 3. When the Wi-Fi calling cuts...

I'm having issues with WiFi calling when connected to my Deco M9 units. The calls connect but dropout after a few seconds to a few minutes. I have 2 units connected by Ethernet backhaul. My ISP is...