Phone calls made between offices are free of charge; calls are routed to the Internet and Quality of Service (QoS) are guaranteed as voice packets are prioritized. Video conferencing is also possible through the same infrastructure; also free. It is also possible to do video casting; one place would do the video production and other sites would be able to view it live. One example of the application is the "Majlis Pedoman Bersama Tan Sri" where employees from outside Johor Bahru (like Kuala Lumpur for example) need not to be in Komtar for the event as they can join the event over the Internet and thus reduce cost for lodging and traveling. With the si², the Q&A (questions and answers) session can also be conducted.