Hi,
About your question, I don’t have experience with OVH systems or devices, however, I presume they gave you some instructions about how to connect an asterisk PBX with their devices, so, you should follow those instructions.
About, VitalPBX, there’s a youtube channel that has some explanations about different configurations, so, you should visit it. Here is the link: https://www.youtube.com/c/vitalpbx
If you need someone who remotely helps you to understand the GUI, and helps you to configure the PBX, like outbound, trunks, inbound, and others, then, you should acquire a paid support from our store: https://vitalpbx.org/en/product/professional-support-packages/
I hope this helps you in some way!!
