I have scoured the forums, talked to support at our phone vendor and also 3cx support and still dont have good answers Situation. AWS hosted 3cx for 1 client Client has 20+ Locations Connecting all client locations to same server Remote extensions (Yealink phones) using provisioning URL (not STUN) No VPNs between locations and server Questions: Do i NEED an SBC at each location? Can multiple SBC's connect back to the server? Do SBC's really help with latency/jitter/garbled voice? I know there are a ton of factors but any help would be appreciated. Thanks!