The purpose of this TS is to describe typical attributes of different types of Mobile Stations (MS) to be used on GSM PLMNs. The term GSM PLMN refers to a GSM, DCS 1800 or any PLMN based on the GSM specification, irrespective of the frequency band used.
Manufacturers and customers may choose any appropriate combination of these attributes in order to fulfil their need while utilizing the services offered through a GSM or a DCS 1800 PLMN. This is not an exhaustive list of attributes or types of MS. Type approval of MSs is addressed in TS 11.10