The major advantage of Arrowfone is in narrow bandwidth requirements, which is three times less than that of Skype (News - Alert). This has enabled Namzak Japan to offer cheap cell phone rates for local and international calls. Moreover, the Arrowfone operates well on 2.5G and 3.0G networks.
Corporate users have already expressed keen interest in the Arrowfone centrex services as it has proved to be better than Skype, especially in situations where handovers are made from one cell site to another. It has also proved to efficient on highways and even on the bullet trains. (Fixed Mobile Convergence)