@woozle Hi @woozle Thanks for your responses so far- They have been instrumental in my learning to get this all sorted. I actually was asked by our service provider of the Yealink phones to reset the...

@jra11500 Hi jra11500, Thanks for your detailed list of the timeline of your setup. I actually was asked by our service provider of the Yealink phones to reset the phones to factory reset- by...

Hi @woozle, Thank you for the suggestion to disable the SPI Firewall. I did so, but unfortunately, it made no difference. I also disbled SIP ALG. Do you have any other suggestions at all?

@woozle Hi @woozle . I will check your suggestion when I get back into the office tomorrow and see if it works. Thanks for the suggestion., I will follow up.

Hi, I am very happy with this router setup but have noticed that a voip phone (ip Yealink T53W) will not connect through this router to the network. The phones work perfectly through a separate 4g...