Product Specification for RBS 2301
4.5
Transmission Modes
The RBS 2301 can be configured for linear cascade mode and stand
alone mode. The configuration is performed by means of the OMT.
When used as stand alone, PCM port A shall be connected towards the
BSC. In this mode, PCM port B cannot be used.
When used in linear cascade mode (multidrop), the RBSs are connected
so that each RBS uses its port A towards the BSC and port B towards
the next RBS. That RBS is connected in the same way with port A
towards the previous RBS (and indirectly the BSC) and port B towards
the next RBS etc.
Only RBSs that support multidrop can be included in the multidrop
chain. Figure 22 on page 44 shows a multidrop chain with three RBSs.
The multidrop function handles 64 kbit/s timeslots only. All RBSs have
dedicated timeslots.
BSC
01_0345A
Figure 22
Multidrop chain
44 (306)
EN/LZT 123 2697
R5A
1998-08-13
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