Guest calling is a mode that lets someone without an account join a call temporarily, often through an invitation link in a web browser. The guest may not need to register or install the service’s app, though the exact identity checks and permissions depend on how the feature is designed.
For security, this shifts some access control from account credentials to the invitation and the guest-entry process. A forwarded, exposed, or misused link could allow unintended access if the service does not limit or revoke it appropriately. Hosts and administrators should check who is joining, understand what guests can access, and share links only with intended participants. Guest calling is a convenience feature, not evidence of a security flaw; its safety depends on the controls around links, guest identity, and participation.