VOIP QoS - Unifi Switches

[newpersn]

Evening all

 

We started to get issues with our IP phones dropping in and out. We have a hosted 3CX with a SBC running internally for our phones to connect to.

 

Our edge switches are a mix of Unifi's Enterprise and Pro Max's. Our core switch is a 2x Aruba 6300 24 SFP+ 

 

Currently our phones are on the server or station vlan. (There is not enough network socket in some parts of the school and this will be addressed when time allows) i plan to moves the phones to a spare vlan. Once I get this setup..

 

We have checked our Firewall, internet and 3CX connections and there is no issues from that side. Internal and external calls you can't hear the other person or it goes delayed. 

 

Has anyone managed to get QoS or priority setup with the above? 

 

Hope it makes sense. Starting to drive me wild...

I've checked our CCTV cameras and make sure muticast is turned off