Thursday, October 6, 2011

Future Mobile Technology

What Wi-Fi phones? Wi-Fi phones are wireless phones that connect to Wi-Fi to communicate. Wi-Fi is a wireless transmission technology, high-speed data. Wi-Fi Phone uses the same technology used in VoIP (Voice over Internet Protocol). VoIP is a new technology that allows users to make free long distance calls, but there is a limitation that the call should be a team. The new mobile Wi-Fi can be used for VoIP calls without being connected to a computer. They use the same wireless network technology with computers. Wi-Fi phones can be called a computer, wireless phone, landline or IP address.

Wi-Fi phones are a part of Smartphone. Smartphones are mobile operating Terminal PC like features. Smartphone usually come with GPS capabilities, messaging and e-books. Smartphones also have options to install and external application to meet their growing needs.

Smart phones have a high processing speed in the range of 200 to 700 MHz The smartphone uses the ARM processor. These processors are very energy efficient and used in printers, MP3 players and other small appliances. They have a built-in memory plus an expansion slot for additional storage.

Each phone is an operating system (OS). Smartphone OS is the function of driving and enables interaction with the firmware. Wi-Fi phone first connect to a Wi-Fi hotspot, which is based on the degree of control the VoIP features, and make a VoIP call, the user's request. Just as the data packets exchanged by the PC to the router and the phone call. The point of view of hardware design, mobile phones emit signals of different frequencies. Payphones to return 850 MHz cordless phones use the 802.11b or 802.11g Wi-Fi signals, which transmit at 2.5 GHz in a Wi-Fi phone, the number is converted into packets and sent to the wireless receiver. Wireless receiver will send an invitation to the Internet like other VoIP call. When the debate began playing will also be sent in packets. Some Wi-Fi phones using the Session Initiation Protocol (SIP) protocol.

Calls can be made only by typing the desired SIP address. SIP is a standard protocol for handling voice data. Currently, the Wi-Fi phones have a great potential due to the lack of Wi-Fi routers all over the country. So it is not necessary that anyone with a mobile Wi-Fi is a wireless connection to receive calls. Some phones will feature Wi-Fi GSM so the user can receive calls with or without a Wi-Fi. VoIP uses a lot of bandwidth, if the router becomes too full, then a deterioration occurs, these problems prevent the growth of existing Wi-Fi phones.