What are the prerequisites for using voice-as-channel on Rocket.Chat?
For using VoIP on your Rocket.Chat instance you need:
WebRTC-based browser (Chrome/FF/Safari/Chromium-based edge)
A PBX server (We used Asterisk Version 16.19.0 (With PJSIP stack))
SIP trunk provider.
Does Rocket.Chat host a PBX server?
No. Rocket.Chat does not host any PBX server. It's up to you to get your own PBX server.
What call plans does Rocket.Chat provide?
Rocket.Chat does not provide any call plans. You have to get them from your PBX provider.