iPhone Wi-Fi calling settings - Balance One

Hi, I’ve been having issues with Wi-Fi calling though Apple iPhones on my network, I’ve read that some people say to open some ports (which I believe should be open already) and that it can also have issues with the load balancing settings but I would like load balancing to remain for other devices using the same wifi network. My knowledge is limited in this area, so any help is appreciated.

Are there any setup configurations that any one can recommend to improve the quality of these calls?

Thank-you.

If you think this may be related to a load balancing issue then you take the MAC address of one of the iPhones and create an outbound rule enforcing it to one of the WAN connections as a test.

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