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A particular 3GPP technical specification description may cover all the systems. A TS specifies its applicability/scope to other mobile communications systems such as the GERAN, UMTS, LTE, and 5G. Pay attention to this fact. For example, click on any specification series for a particular subject area on the 3GPP site [2]. All the technical specifications shall be presented under that particular series. Now, further, click on any technical specifications. A new window shall be opened, and from there, one can find the scope and applicability, under Radio Technology, of the technical specification being clicked. Below the Radio Technology, there is a link by clicking which all the versions/releases of the particular technical specification can be downloaded.

The first section of every technical specification also describes its scope. Moreover, the first page of every technical specification displays the GSM or LTE or LTE Advanced or 5G logo depending on the scope.