What are the basic components of a 3CX system?

The correct choice highlights the fundamental elements that make up a 3CX system. The 3CX server serves as the core component, managing calls and connecting all other elements. SIP trunks are essential for establishing connectivity with the public telephone network, allowing users to make and receive calls. Endpoints refer to the devices used by users to access the 3CX system, such as VoIP phones and softphones, while clients involve the applications that enable users to engage with the 3CX services, whether on desktop or mobile devices.

This comprehensive structure is crucial for the effective functioning of a 3CX solution, as it integrates various types of devices and connectivity options to ensure seamless communication. In contrast, the other provided choices refer to components or terminology that do not accurately reflect the standard architecture and operational necessities of a 3CX system.