User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1 121/980
2.8 Functional description
2.8.1 MSS (Indoor Unit)
The MSS incorporates the base–band processing and also modem functionalities only when ODU300 is
connected. MSS offers tributaries interfaces as well as supervision. The MSS is frequency–independent.
Two MSS are available:
– MSS-8
– MSS-4
The MSS-8 is made of:
– 1 subrack (MSS-8 shelf)
– 1 or 2 Core-E Modules (Working & Spare)
– up to 6 Transport Modules
– 1 AUX Peripheral Module (option: to be installed in Transport slot #8)
– 1 +24 Vdc/-48 Vdc Converter Module (option for +24 Vdc office application: to be installed in
Transport slot #4, #6 or #8)
– 1 Fans unit
The MSS-4 is made of:
– 1 subrack (MSS-4 shelf)
– 1 or 2 Core-E Modules (Working & Spare)
– up to 2 Transport Modules
– 1 AUX Peripheral Module (option: to be installed in Transport slot #4)
– 1 +24 Vdc/-48 Vdc Converter Module (option for +24 Vdc office application: to be installed in
Transport slot #3 or #4)
– 1 Fans unit
There are six types of Transport Modules:
– 32xE1 Local Access Module
– 16xE1 ATM Local Access - ASAP Module
– 2xSTM-1 Local Access Module
– Modem Module: to interface the ODU300
– MPT Access Module: to interface up to two MPT. It can provide the PFoE
– EAS Module: provides the access of up to 8 Ethernet traffic interfaces.
In the right part of the MSS shelf there are two sub-D 2-pole power supply connectors.
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