Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 4: Protocol testing specification for Direct Mode Operation (DMO); Sub-part 4-3: Test Suite Structure and Test Purposes (TSS&TP) for Mobile Station (MS) Repeater type 1 (Endorsement of the English version EN 300394-4-3 V 1.1.1 (2001-01) as German standard)