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Nokia, plus almost every major international operator, agree on a standard for voice + SMS over LTE

By: , IntoMobile
Wednesday, November 4th, 2009 at 6:47 AM

LTE, Long Term Evolution, 4G, whatever you want to call it, was designed to be a complete IP based system. Many of you may be surprised to hear this, but when LTE became a standard, it only supported data. That’s right, 4th generation networks didn’t have an interoperable standard for voice and SMS. Several solutions have been proposed, and I’ve extended my support to VoLGA, but it looks like Nokia has decided IMS (IP Multimedia Subsystem) will be the way going forward.

Who supports the decision? AT&T, Orange, Telefonica (many of you know them as O2), TeliaSonera, Verizon, Vodafone, Alcatel-Lucent, Ericsson, Nokia Siemens Networks, Nokia, Samsung and Sony Ericsson. That’s a lot of companies. Their posse is called “One Voice Initiative” and now that the big boys have all decided on a standard, progress towards getting LTE networks up and running will start to pick up. Verizon and TeliaSonera are competing to see who will launch the world’s first commercial LTE network in 2010, but it’s going to quite a ways off until 4G coverage is equal to the current 3G footprint.

If anyone can point me (and IntoMobile readers) to a blog post or a book that explains how IMS works, that would be greatly appreciated. I’ve always avoided the standard since I thought it would never fly. Oh how wrong I am now.

Update: The One Voice spec has been published, check it out [PDF] if you’re a network engineer.

[Via: Press Release]

About The Author

Stefan Constantinescu

Stefan Constantinescu (@WhatTheBit on Twitter) has loved technology since as far back as he can remember. It started with computers, but in the past few years his passion has turned to mobile devices. As a mobile phone enthusiast who lives and breathes devices that connect to the internet, he knows he is not alone with this radical fascination of all things wireless. He is strongly opinionated and enjoys a good debate so leave comments in his posts and he’ll get back to you! Stefan began blogging as a hobby in the fall of 2006 and joined IntoMobile in the summer of 2007. Later he got a job at Nokia in March 2008, but as of June 2009 he has rejoined the IntoMobile team. He is currently based out of Helsinki, Finland.

  • mate

    the best book which explains IMS is in my opinion The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds written by Camarillo & Garcia-Martin