How can Flight Attendants communicate with each other using the Interphone System?

The Interphone System is a crucial communication tool that enables flight attendants to coordinate effectively during a flight. It allows for instantaneous voice communication among crew members without the need for external devices, ensuring that all members can communicate vital information quickly.

The correct option highlights the function of the intercom system, which is designed for verbal communication between flight attendants. This allows for seamless collaboration and quick resolution of any issues that may arise during the flight, enhancing safety and efficiency in cabin operations.

The other options do not accurately describe how the Interphone System operates. Sending text messages is not a feature of the intercom system, as it primarily facilitates voice communication. Making public address (PA) announcements is a separate function that targets all passengers, not just crew members. Using direct lines only is not applicable, as the interphone system connects all designated crew stations, allowing for broader communication rather than isolated connections.