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About This Item
Full Description
This part applies to the TETRA DMO Repeater (DM-REP) air interface and contains the specifications of the physical, Data Link Layer (DLL) and the network layer according to the ISO model.
The specifications contained herein apply to a DM-REP as a stand-alone unit supporting a single call on the air interface (type 1 DM-REP). They also cover the operation of a Direct Mode Mobile Station (DM-MS) with a type 1 DM-REP.
NOTE 1: The specifications for a Direct Mode Repeater/Gateway (DM-REP/GATE) combined implementation are provided in EN 300 396-5 [5], together with the specifications for a Direct Mode Gateway (DM-GATE).
NOTE 2: The specifications for a DM-REP as a stand-alone unit supporting two calls on the air interface (type 2 DM-REP) are provided in EN 300 396-7 [i.3].The protocol for a DM-MS operating with a type 1 DM-REP is specified in clauses 5 through 8, 10 and 11. Much of this protocol is defined in the form of a "delta document" relative to the specifications provided in EN 300 396-2 [2] and EN 300 396-3 [3] for direct MS-MS operation. These clauses define where the protocol in EN 300 396-2 [2] and EN 300 396-3 [3] applies without change, or where it applies with the specified amendments, replacements or additions. Where no reference to EN 300 396-2 [2] or EN 300 396-3 [3] exists, the clause should be regarded as independent.
The protocol for the DM-REP is specified in clauses 9 and 12.
The normative annex mainly specifies the parameter values used in the protocol.
Document History
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ETSI EN 300 396-4
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Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 4: Type 1 repeater air interface- Most Recent
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ETSI EN 300 396-4
Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 4: Type 1 repeater air interface- Historical Version