Emergic: Rajesh Jain's Blog

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A2P SMS: The Economics of SMS

September 10th, 2009 · 3 Comments

As many of us have noticed, SMS is not carried on the same channel as Voice. What this means is that we can send and receive SMS even as we are speaking. SMS is actually carried on the SS7 signalling channel which is otherwise used for call set-up. As we all know, a single SMS [...]

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