Velocity

You'll need extra ports for this tutorial. 1 for each server with voicechat plugin.

1. Every server on the same node

On The Backends:

Do everything stated here for each of your backend servers

On The Proxy:

Install SimpleVoiceChat for Velocity

The plugin will automatically detect the port of each voice chat server and will forward everything to the correct destination.

2. Servers on different nodes

Follow the steps for "Every server on the same node" and:

set voice_host on the backend servers to their (the backend's) actual IPv4