Some of you may have noticed that the new and revamped 3GPP website have recently started offering 3GPP specs and features tutorials via The SpecTools. There is quite a lot of useful information and most of it is premium but a lot is free as well. So the new starters or those wishing to refresh their knowledge feel free to check this out:
Looks great! I actually bought 1 license for one of the protocols (the premium service) and I strongly recommend it.
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