Transmission Modes - Ericsson CME 20 R6.1 Reference Manual

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.
Figure 22
44 (306)
Multidrop chain
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1998-08-13