Wireless broadband and VoIP combined with an era, but what form will be remains to be seen
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Wireless voice technology is still in its infancy, there is no proven business model, and how awareness of this trend, there are still great differences in development.However, most experts believe, VoIP will eventually be combined with the new wireless broadband, to change corporate and consumer access to and use of mobile and fixed voice services.
This means that you can walk down the street talking on mobile phone networks, into the office, the call can seamlessly switch to the WLAN speech technology, thereby reducing communication time must be purchased by phone. Other examples are: mobile phone signal is weak in the warehouse, the phone's software will automatically transfer the call to a WLAN voice system; and when you are outside the WLAN coverage, the call will switch to the phone network.
Perhaps most importantly, this new trend and the underlying integration technology, will give mobile phones and land lines, bring new challenges to operators. In turn, may result in new, more intense competition.
Telephone market research and consulting firm Kerton Group Leader DerekKerton said: "The mobile phone operators that is not the cold. If users think they can reduce the use of mobile phone service time, for example, from 1000 minutes to 200 minutes, then the operator would not be interested in this technology. "
Sprint vice president of product development TonyKrueck admitted: "Everything began to integrate, what types of services who does not exist a clear line, the answer need to be known for some time."
Technology
Problem is that some new technology and the renovation of the old technology, will speed land lines, wireless Internet access and VoIP together, so that has been applied in many homes and offices of the VoIP technology with mobility.
The wide range of emerging wireless technologies, the most high-end is the wide area Wi-Fi mesh network, known to cover the entire urban areas. Philadelphia because the city-wide mesh network scheme has attracted great attention in many smaller cities have also applied the technology.
Some people think that only city-wide Wi-Fi mobile voice technology will change the prospects for the wider use of mobile VoIP technology pave the way for. But others, such as research vice president at research firm Gartner believes that PhilRedman, Wi-Fi mesh networks can not do this task. He said: "City Wi-Fi service can not complete this task is a major cause of lack of control. This is a band without authorization, so if I use my private network interference you, you have no alternative."
In addition, he noted that the current Wi-Fi standard can not guarantee the quality of the built-in voice quality of service. This issue will be the next Wi-Fi standards?? 802.11n end of this year or early next year received approval to be addressed.
Wi-Fi, these shortcomings do not allow Sprint, discouraged. Krueck said his company is developing a consumer phone, the internal phone call Combophone can handle both Wi-Fi voice, you can handle phone calls.
Krueck said: "When you walk into the house, the special wireless (Wi-Fi) router will Combophone pair, as you get out, you can call through the cellular network."
However, Krueck stressed, Combophone not outside the home Wi-Fi Internet use. The Sprint plan to run VoIP router is an integral part of, and this router can only be installed in residential interior. Combophone is expected to be launched next year.
The Wi-Fi for VoIP has been criticism of some people, while a variety of more robust, longer transmission distance mobile wireless technology has emerged, most notably technology is mobile WiMax. Fixed WiMax is already a fully ratified standard, and its mobile version could be approved at the end of this year.
In addition, IPWireless's UMTSTDD and Qualcomm's FLASH-OFDM mobile version has been made and available. These three technologies can create IP-based wide area network, and usually run in the authorization part of the band, so that they are better than the Wi-Fi technology is not susceptible to interference and other problems.
The benefits of technology integration
All of these technologies allow users to have a set of mobile, fixed and mobile VoIP calls in one, this field of health care has great appeal. Hospitals and other large institutions in the doctors and nurses have a lot of time on the day see patients walking around, meeting with colleagues and participate in the meeting. Warehouse with the previously mentioned scenarios, like cell phone coverage inside the building may be of varying quality, and VoIP cheaper price. Therefore, many health care facilities for the medical personnel have been equipped with WLAN voice calls, and set mobile phones and VoIP in one phone more attractive.
Voice integration to achieve this vision, we need a mobile phone network and IP-based network technology to switch between calls. This has the potential of emerging new technologies were two non-authorized mobile access (UMA) and IP Media Subsystem (IMS). In short, the former technology for GSM-based mobile phone networks such as Cingular and T-Mobile U.S. network deployment; while IMS is based on IP, using VoIP in the fixed system is very popular SIP technology.
To the cell phone and VoIP calls with the use of the vision into reality, this technology is indispensable. Only the mobile operators and manufacturers of these technologies into their infrastructure and the phone, switching between networks is possible to achieve transparency. Phone manufacturers (regardless of which network to use, they eventually will sell phones) has been in testing for such technologies and push carriers. Similarly, the production of mobile operators using the infrastructure equipment (eg base station) vendors are also testing such technology. However, this change will lead to a VoIP phone using the time shift, so operators are not interested, especially this may also bring many new competitors.
Lack of business model
Great if this potential change to promote the technology is still pending, then the business model is even more like
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