Due to the announcement, Office of Academic Affairs provides suggestion below for your consideration.
Firstly, CyberLink U meeting and U Webinar business accounts are provided for all instructors who have courses in this semester. Please find CyberLink account invitation sent in March to your e-mail box, or contact Digital Learning Center if you lost your e-mail (33663367#532).
U Meeting and U Webinar both provide long-time online conference. U Meeting and U Webinar support connection for up to 100 and 500 participants, respectively. If your course requires synchronous discussions, U Webinar is recommended. “Text chat” button in U Webinar can be used as “sign in” by students ( see page 26 of CyberLink U Webinar English ver. User's Guide) and “Voice Q&A” button can be used as “roll call” or for more interaction(see page 30 of CyberLink U Webinar English ver. User's Guide).
For more conference software for online teaching, please see “NTU TOOLBOX FOR VIDEO CONFERENCING”: http://teach.cc.ntu.edu.tw/course/video%20conferencing/index.html
For more online teaching support, please see “COVID-19 Main Page” at Digital Learning Center: https://www.dlc.ntu.edu.tw/superkit/