MINI-LINK TN R3 ETSI
9840
Radio Frame
Multiplexer
Modulator
Cable
Interface
Demodulator
Radio Frame
Demultiplexer
SPI
TDM
(Wayside traffic,
E1 only)
TDM Bus
PCI Bus
SPI Bus
HCC
HCC
RCC
RAU
Power
Power Bus
Secondary
voltages
DCC
Traffic
DCC
Traffic
BPI Bus (1+1)
BPI Bus (1+1)
Control and
Supervision
XPIC
(MMU2 F 155)
STM-1
Line interface
High-speed bus
Figure 59 Block diagram for MMU2 E/F 155
4.2.2.1 TDM Multiplexer/Demultiplexer
This block interfaces the TDM bus by receiving and transmitting the traffic
(nxE1) and DCC.
It performs 2/8 and 8/34 multiplexing, depending on the traffic capacity, for
further transmission to the Radio Frame Multiplexer.
In the receiving direction, it performs 34/8 and 8/2 demultiplexing , depending
on the traffic capacity. The demultiplexed traffic and DCC are transmitted to
the TDM bus.
In a protected system, the block interfaces the BPI bus, see Section 4.6.2
on page 81.
Note: The TDM block in MMU2 E/F 155 performs no multiplexing/demultiplexi
ng. The traffic in the receiving direction equals 1xE1.
Note: The high-speed bus will be possible to use with future functionality such
as integrated ADM. It is currently not enabled.
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4
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/1555-CSH 109 32/1-V1 Uen B 2007-09-14
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