Recently changed from a Linksys mesh to deco P9 since changing every time I get a call or make a call whilst using WiFi calling the call drops out after a couple of seconds same for the rest of the family all using iPhone 11 

don't even have to move the call connects then drops 

have tried reserving the phones up addresses 

never had this issue with the Linksys system only changed as my sons connection using the P9 for his gaming is better 

this issue happens even if no one else is in the house using the WiFi so not a bandwidth issue even connected the the deco at the furthest point I do a speed test and get over 150mbps down and 25mbps up

am I missing something didn't have to do anything in the Linksys for WiFi calling to work