If we do not intend on having external entities, does the 3CX server require internet access?

The correct answer indicates that the 3CX server can operate in a closed network without requiring internet access if there is no intention to interact with external entities. This means that for internal communication and processes, the server can function effectively within a local network setup.

In a closed network environment, users can still make calls, send messages, and utilize all features provided by the 3CX system without needing to connect to the internet. This is particularly advantageous in scenarios where data security is of utmost importance, or where internet access is limited or unreliable.

Moreover, while updates and connections for remote extensions typically necessitate internet access, these are not obligatory if you're solely using the server within a constrained network. Therefore, the 3CX server’s capability to run independently of the internet highlights its flexibility in various operational configurations.