I recently penned a column for Light Reading on the arrival of 4G and what it will mean for the large global service providers. I think this is a watershed moment for the telecommunications industry and not many folks seem to be paying attention to it.

The business models of the major service providers are about to change radically -- as they go from a heavily regulated, profitable, "utility" model of landline-phone service to the Wild West of the mobile Web. in the pre-4G world, the bulk of their revenue came from predictable and profitable voice services. In the post 4G-world, they will have to provide larger amounts of commoditized data at a lower price point. The bottom line is that 4G is expensive and their margins on mobile data are much lower than voice.

Not only that, but data traffic will predominate the traffic and revenue on 4G networks. When 4G networks get rolled out in 2011-2012, the delivery of mobile data will increase by an order of magnitude. This will present challenges to them on the cost front.

Here are a few facts you might want to follow:

• The global mobile data revenues reached $220 billion and mobile data now contributes 26 percent of the overall global mobile service revenues, according to Chetan Sharma Consulting.
• 2009 also marked the year when the global data traffic (monthly) exceeded the global voice traffic. In the US, the yearly mobile data traffic exceeded the voice traffic for the first time.
• It is expected that 2009 marked the year that mobile data traffic reached a new milestone of 1 exabyte (EB) or 1 million terabytes (TB). By 2016-17, the global yearly mobile data traffic is likely to exceed 1 zettabyte (ZB) or 1,000 exabytes, according to Chetan Sharma Consulting.
• Over 50 percent of the world's households carry a mobile device, according to Accel Partners.

You can read the article in its entirety here.

Well, AT&T has eliminated the unlimited data plan, and Internet anarchists everywhere are having a cow. The funny thing is AT&T's headline on the announcement: "AT&T Announes New Lower-Priced Wireless Data Plans..."

First question: Are the plans really lower priced, as AT&T claims? Now that's funny. If you read the headline on this press release you would think it was some mundane, tiny pricing shift -- like AT&T thought it could slip one by millions of frothing-mouthed, blogging mobile data heads. Of course the digital-media addicted Internet anarchists note that by definition eliminating an all-you-can eat plan is raising prices. MobileCrunch calls this a "sad day in data land."

The Rayno Report recently completed "The Data Deluge: A Mobile Revolution," which details enormous changes that will becoming to telecom networks over the next few years.

The explosion of smartphones over the next 2-3 years is likely to put enormous burdens on telecommunicaitons networks, and it's going to force telecom companies to do a lot of upgrading of their equipment and technology, especially the area of the network known as the "mobile backhaul" portion which links cell sites to the core of the network.

This and forthcoming sponsored research papers will be available, free of charge to registered users, in our reseach store, which is here. Our first report is sponsored by Adtran. I am happy to announce that Adtran will be sponsoring this site for the next few months (hopefully longer), and that they have sponsored some research which the Rayno Report has conducted on their behalf.

The reason that the shift from mobile voice to mobile data will have such a huge impact on the industry is that it was orginally architected to handle voice calls, and the move to 4G represents a historic shift. This will create many problems and challenges for the telecom industry. As you can see below they make a lot more money from voice.

Here's just an example of the growth we expect to see in new data-rich mobile applications: the number of mobile phones has grown 460 percent in just seven years. As these types of growth rates extend into the 4G "smartphone market" -- which will accelerate in the next two years -- you will see data on the telecom networks increase by an order of magnitude.

Consider this:

* A 4G network will accomodate data speeds up to 150 Mbit/s. Considering that most 3G networks provide data rates under 10 Mbit/s, this will be a huge jump in data. This will result in an explosion of new data-rich applications and user demand, which will flood the networks with more data.

* New smartphones applications are already blossoming, with billions being downloaded every month. This is shifting the user demand from voice to data. Telecommunications networks will need to accomodate this new demand for data.

* Smartphones currently have under 20% market-share of the mobile phone market. That will probably expand to more than 50% in the next three years, creating even more demand for data networks.

To read more, check out our free sponsored research paper.