UMA, Unlicensed Mobile Access on Nokia

Lets your phone use the Internet for calls and data
UMA (Unlicensed Mobile Access) lets you use your wireless broadband Internet connection for mobile phone services. This includes voice calls, mobile browsing, email, MMS, SMS, and basically any mobile service you use a network connection for.

What's Good About UMA
You probably connect to the Internet at home or at work, often on a broadband connection. When you use your mobile phone, you use a separate, cellular connection. But both of these systems can connect you to the same services. Since your broadband connection is reliable, fast, and always on, why not use it with your phone, too?
That's the basic idea behind UMA. It connects your mobile device to your GSM/GPRS services through WLAN (802.11) and allows you to handle calls, send and receive messages, check your email - basically, it lets you do what you already do with your mobile phone, this time through a wireless broadband Internet connection. When you're not in range of such a connection, of course, the cellular network takes over. The automatic switch from cellular to broadband is as simple as walking in your front door - you won't even notice it happening.

A few more points about UMA:

• Simplify your life by using your mobile phone for all of your communications
• Most calls and other mobile service connections are done at home or work - UMA technology offers fast, reliable and affordable connectivity
• Get more out of your mobile device's features (things like browsing, Visual Radio, and mobile video) using the fast broadband Internet connection provided by WLAN access
• Use it indoors with your home or office WLAN, or even through a public hotspot
• UMA switches automatically between cellular access and WLAN when you're in range - you won't notice the difference even in the middle of a call
• WLAN provides reliable coverage in the home or at work
• UMA requires support from your network operator

How UMA Works
Firstly, you need a mobile device with UMA technology, an operator that supports UMA, and an Internet broadband connection that you can access with WLAN. To use UMA, that's really all you need to know. Instead of using GSM radio to connect to cellular towers, it uses IP to connect to the mobile network - through the Internet.

If you make a call over the cellular network, like you probably do every day, first your device connects to a tower called a Base Transceiver Station (BTS), and from there the connection goes over a private network to a Base Station Controller (BSC), which further directs your connection to the public telephone network.
With UMA, it works like this: after you've entered a few WLAN connection settings, your UMA-enabled mobile device can connect to the Internet over WLAN. Using IP (Internet Protocol), it then connects to what's called the UMA Network Controller (UNC). Think of your WLAN access point as the BTS, the Internet connection as the private network, and the UNC as the BSC. One of the main differences is that all of the speech and data information is being sent over the Internet connection. And that's it in a nutshell.

Why IP?
UMA isn't the only mobile phone technology that's using IP. UMA is just one example of so-called VoIP (Voice over IP) technologies, such as the popular peer-to-peer Internet telephony. The key idea in all VoIP technologies is the clever use of the latest advances of Internet and broadband technologies to create affordable, reliable voice services. VoIP itself is based on IP, which is the communication language that allows your computer to retrieve information from the Internet. Given that the Internet has become such a huge part of how we communicate and share information, it's not surprising that some creative people decided that it should work for telephony, too.

Phone models compatible : Nokia 6301 The Nokia 6136 Phone


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