Hello!
Currently, only S. Stats has been tested on a different server.
You can do the followings steps:
Debian:
sudo su
curl -fsSL https://repo.vitalpbx.com/vitalpbx/v4/apt/setup_repo | bash -
apt install sonata-stats
Centos:
wget -P /etc/yum.repos.d/ https://raw.githubusercontent.com/VitalPBX/VPS/vitalpbx-3/resources/vitalpbx.repo
yum install sonata-stats
Then follow the steps found in this link, Move Sonata Stats to Remote Server.
Finally, under PBX settings in Sonata Stats on the second server, enter an API Key generated on the first server under Admin > Admin > Application Keys.