Although Ilan's master's degree program, the inter-collegiate elective courses from five universities, and the Chinshan distance learning project each utilize video systems which allow the students and teachers to see and hear each other live, there are differences in the degree of clarity and fidelity in the picture and sound as well as the speed of transmission for each.
無論宜蘭碩士班遠距課程、五所大學的跨校選修，或金山社區遠距教學，雖然都是採用師生可以同步「看」、「聽」的視訊系統，但其中因傳輸線路的不同，在畫面、聲音清晰度和傳送速度上就有差別。