These days, company workers have a lot of opportunity to collaborate with remote coworkers. In this study, we focused on “virtual same room” systems which provide a sense of co-existing virtually and enable real time interaction among remote offices. While many systems have been proposed, system effect was not fully evaluated in actual enterprise organization which has diverse workers and work context. To evaluate it, we conducted case study of implementation of SmoothSpace (SS) which is a teleconference type system, in remote offices of a Japanese manufacturing company. Survey was conducted in order to clarify the effects of SS and impact of two worker’s attributes, 1) job position and 2) working location on the effects. Results indicated that SS led frequent interaction between remote offices, and encouraged behaviors for knowledge creation. Frequency of interaction was depended on workers’ job position. Results also suggested that SS implementation had more significant impact on behaviors for knowledge creation of branch offices workers, rather than main office workers. These findings might be valuable to know environmental conditions in order to maximize a benefit of the systems implementation.