Firewall error ISO install

[mo10]

It always depends on what you want to do. How many extensions, call recording yes/no. 1vcpu and 2GB of Ram should be fine for most cases.

Also see here:

How many concurrent calls does VitalPBX support?

For a long time many people have asked us the following: “What is the concurrent call capacity of VitalPBX or Asterisk?… What is the bandwidth consumption for calls in VitalPBX or Asterisk?”