@noyon228 Use this guide to check if your C54 configuration was set up properly.

@CRBB Check this post regarding your inquiry.

@JoHanstead If your modem router is VR2100 then you have to turn off OneMesh feature as well. On a TP-Link Modem Router Open a web browser, type tplinkmodem.net in the address bar, and log in. Go to...

@Andrew71 As i already mentioned, this model VR1210v is not supported by the community, because it's usually an ISP provided device. So, if you don't have separate menu for VoIP VLAN and Internet...

@Arnab9191 Check your wireless settings for any changes, which could cause such an issue. If hey are intact, you can try a downgrade to the previous FW release from here.

@ArielOM Here's where you can find this FW release. Unfortunatelly this FW release is described as not downgradable in its release notes. What you can do, is try the FW recovery procedure (method 2)...