Wireless VoIP, also known as WVoIP, is an exciting area of VoIP. It can be used via WiFi, EVDO Revision-A, HSDPA and WiMAX. The caller is not limited to a single phone, but can also use a headset, laptop, PDA or mobile WiFi phone.
The range of wireless VoIP is limited because it can save money for mobile users. Moreover, it does not always apply to WiFi networks originally designed for data rather than voice packets. This makes current cellular telephone networks superior to wireless VoIP, albeit at significant cost.
Tata Communications said they will launch the largest WiMaX network to date. Telsima will build a network. It should cover 110 cities with limited coverage and 15 cities with a wide coverage. Broadband is not available in many of the areas covered, and only about 3 million people in India have access to broadband networks in the 1.2 billion population.
Three US WiMAX network providers include: MetroBridge Networks, which includes Arizona and Seatle, Clearwire has a 2.5 GHZ license, has a test market in the Northwest, [they plan to compete with other WiMAX providers nationwide], and Sprint-Nextel who still With a 2.5 GHZ license, they plan to cover Washington, DC, Baltimore and Chicago.
With the fierce competition of WiMAX commands, innovative technologies can only get better, which is an exciting time for mobile phone users who want to use wireless VoIP at lower rates, especially for just a few minutes. Long distance/international calls for money.