@Mishutca Hi, welcome to our community. Archer MR500 can not set up Onemesh network with Archer AX53. OneMesh only works between a OneMesh router and OneMesh Wi-Fi Extenders/Powerlines. You may refer...

@ryg Hi, Sorry, your steps are confusing. I am not sure whether you reconfigured M4 as main Deco or not. You unplugged other Deco E4s but it seemed that you did not set them as satellite Decos. "i...

@ARGamingPK1 Hi, thanks for posting question here. As the explanation in the guide, QoS(Quality of Service) allows you to prioritize specific devices for a set duration. Devices set as high priority...

@ryg Hi, You may set the M4 as main Deco following the guide: How to replace the main Deco with another Deco After M4 works as main Deco properly, unplug the power adapters of other 3 Deco E4...

@Albaw Hi, thanks for your further sharing. You may contact technical support of your Samsung phone to check related settings. Best regards.

@Daggles Hi, -May I know the model of your sip phone? -Do you have old modem router which supports VoIP? What is the model of it? -It is suggested to reinstall your old modem router then compare...