Call Quality Issues V20 Hosted instance with SBC on prem

[ACT512]

We have a hosted 32SC instance with around 70 phones on an SBC. (plus 14 phones that are their own SBC) The SBC with the 70 phones is an ESXi VM with SSD storage, 8GB memory allocated to the VM and 2 vCPUs
Utilization is low, around 2GB memory, 2% CPU.
The Internet at the office is AT&T fiber with latency 15ms - 30ms
Even recording voice messages internally is choppy, we can't seem to trace anything specific.
Where should I start on troubleshooting?

 

[SweetAction]

PWA / mobile apps not on WiFi work ok?
Rule out the network and rule out the phones. You already ruled out the SBC by having RouterPhones.

 

[Evolute IT]

2 cores for a 32SC / 80 users??

This should be at least 4 cores. Wondering if that's your issue.

We've seen drastic improvements when upgrading our VMs.

Otherwise it's a network issue. Could be as stupid as the NIC on the server.

 

[SweetAction]

2 cores for a 32SC / 80 users??

On the SBC.

Being in the 3CX Hosted Forum, I assume the PBX itself will be fine as it's hosted by 3CX.

 

[Evolute IT]

On the SBC.

Being in the 3CX Hosted Forum, I assume the PBX itself will be fine as it's hosted by 3CX.

Ahh yeah makes more sense lol