How can users log into 3CX using a softphone?

Using a softphone to log into 3CX primarily involves configuring SIP accounts with the user's extension details. This process usually requires the user to input necessary information such as their extension number, password, and the server address associated with the 3CX system. This configuration establishes a connection between the softphone and the 3CX server, allowing users to make and receive calls as if they were using a physical handset.

While other methods, such as entering a user ID or downloading an app, may play a role in a broader context of utilizing 3CX services, they do not directly address the core functional requirement of logging into the system through a softphone via SIP account configuration. Similarly, scanning a QR code can simplify the setup, but it typically serves as a means of populating the necessary extension details rather than constituting the initial login method. Therefore, configuring SIP accounts remains the essential step for establishing connectivity and functionality in the 3CX environment through softphones.