3G is the third generation of wireless technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the Internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.
3G Technical Specifications:
The transfer rate for 3G networks is between 128 and 144 kbps (kilobits per second) for devices that are moving fast and 384 kbps for slow ones(like for pedestrians). For fixed wireless LANs, the speed goes beyond 2 Mbps. 3G is a set of technologies and standards that include W-CDMA, WLAN and cellular radio, among others.
3G follows a pattern of G's that started in the early 1990's by the ITU. The pattern is actually a wireless initiative called the IMT-2000 (International Mobile Communications 2000). 3G therefore comes just after 2G and 2.5G, the second generation technologies. 2G technologies include, among others, the Global System for Mobile (GSM) - the famous mobile phone technology we use today. 2.5G brings standards that are midway between 2G and 3G, including the General Packet Radio Service (GPRS), Enhanced Data rates for GSM Evolution (EDGE), Universal Mobile Telecommunications System (UMTS) etc.
What Is IP Camera?
An IP camera is a networked digital video camera that transmits data over a Fast Ethernet link. IP cameras (also called "network cameras") are most often used for IP surveillance, a digitized and networked version of closed-circuit television (CCTV). Benefits of IP camera over analog technology include: Remote administration from any location. The ability to easily send images and video anywhere with an Internet connection. Lower cabling requirements. Support for intelligent video.
The work process is as follow
The camera turns video and audio into date
The camera connected to your network or directly to your router and transmits the data to the network
Then the data can be viewed as high quality images, audio on any authorised PC, Mac or mobile phone in LAN or WAN
The recording software supplied can be used to record and view 36 cameras via any compatible Windows PC or laptop
With IP camera, you can securely manage motion detecting, image and video recording, email guest access, as well as stream real-time video from your cameras anytime from the web browser.
Whether you're keeping an eye on your baby, elderly relatives or your business, you will be keeping informed when it matter anywhere anytime.
What Is The Difference Between Wifi And 3G?
3G and WiFi are communication technologies that provide wireless internet access and services to users. 3G and wireless are commonly used by devices such as laptop computers, smartphones and PDAs, and other entertainment gadgets.
The major difference between wifi and 3G is the way they connect to the internet.
Wifi connects to the internet through a wireless network and has a short range. You may have a private wireless network set up at home, its range depends on your vicinity to your computer router. Wifi is also commonly available in public places such as cafes, airports and shopping centres.
3G is a type of cellular network and connects to the internet where ever there is mobile phone service. This means its range is a lot wider than a wireless network. Accessing the internet through your mobile phone provider usually comes at a greater cost than wifi, especially if you are travelling overseas and using International Roaming.
When using a portable device that is capable of using both Wifi and 3G, such as an iPhone, unless you have turned wifi off your device should always connect to the internet using wifi unless it is not available. If it is not available or you are out of range, your device will then connect using 3G.
