A master slave dexterous manipulator allows dexterity to be increased. Moreover, with capability of remote surgery, it is possible to realize participations of highly capable doctors to a surgery, which takes place in a distant place. And also, it is possible to facilitate a team work medical treatment between doctors from all around the world. We have conducted Japan inland remote surgery experiments between Tokyo and Shizuoka (150km of direct distance) for 4 times at the writing time. ISDN(2B+D) and ISDN(23B+D) have been used in the experiments. Laparoscopic cholecystectomies have been successfully carried out on pigs within 50 msec of control signal time-delay and 400 msec of image time-delay, approximately. The completion time of whole surgical procedure was approximately 90 min, which is roughly equal to a conventional laparoscopic cholecystectomy. In this paper, a remote surgery experiment, which was conducted between Japan and Korea is described. Research & Development (R & D) Internet testbet APII (Asia-Pacific Information Infrastructure), which consists of an optical submarine cable network KJCN (Korea- Japan Cable Network), was used. In the experiment, a laparoscopic cholecystectomy was successfully carried out on a pig. The network time-delays of control signal and images were 6.5 msec and 435.5 msec respectively. A comparison of remote surgery experiments using ISDN and the Internet was studied.