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The Lorawan protocol
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like all protocols get new features from time to time.
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Since its first release in 2015, there has been a few updates,
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so new versions.
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The Lorawan protocol is managed by an alliance called the Lora Alliance.
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They started with version 1.0, which has been updated into five new specifications for 1.0.0 to 1.0.4
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on the last 1.0.4 was released in October 2020.
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So you can go on the Lora Alliance website and download the details of the specification because that's where
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they are available.
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In 2017, there has been an evolution of the Lorawan protocol from the 1.0 to 1.1.
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Even though it would new features, this version hasn't been adopted by the industry and only Lorawan
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network servers are compatible with it.
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So the new 1.2 version is now under way, but there won't be major changes from 1.1.
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So in this course we will only focus on all 1.0 versions.
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But don't worry about the new specification.
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It would be an easy step to integrate 1.1 and 1.2 features.
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Once you're comfortable with 1.0 protocol. However, there is an important thing to know when you're
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up to deploy a Lorawan infrastructure.
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The device protocol version must be supported by the networks server.
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That is, it won't be possible to connect a 1.1 device with a network server only dealing with 1.0.1
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end devices.
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However, the nice thing is that all 1.1 network server support all 1.0 end devices.
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Finally, one less thing each time a lorawan specification is released.
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There is a companion document called the Lorawan regional parameters and it goes to the details of
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the frequency band you're using. In this course,
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so far we've mainly spoken about the European 868 MHz band. 
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Anyway, if you have any doubt about one detail of the Lorawan protocol, it's always a good idea to have a look
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at the specification and regional parameters.
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You should find all the information you need.
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But of course, we're here to help you.