Speak with others using clear and professional language, and answer telephones using appropriate etiquette. https://nonou.us/%EC%97%AC%EC%84%B1%EC%9D%84-%EC%9C%84%ED%95%9C-%EB%B0%A4%EC%95%8C%EB%B0%94-%EA%B5%AC%EC%9D%B8-%EA%B8%B0%ED%9A%8C%EB%A5%BC-%EC%9E%A1%EC%95%84%EB%9D%BC/
