Ericsson MINI-LINK E - SMU 16 X2

MINI-LINKEandEMicro
3.9.1.3 SMU 16x2
SMU 16x2 can handle up to sixteen 2 Mbit/s traffic signals. The unit contains
four independent 2/8 Mbit/s multiplexers/demultiplexers, one 8/34 Mbit/s
multiplexer/demultiplexer and the 1+1 MMU selection switch.
An SMU 16x2 combined with an MMU 34+2 can terminate 17x2 Mbit/s or 4x8+2
Mbit/s for one 1+0 or 1+1 terminal.
An SMU 16x2 combined with two MMUs 8x2 can terminate 8x2 Mbit/s for two
1+0 terminals.
Traffic
Router
8 Mbit/s
8/34
Multiplexer
Demultiplexer
Traffic
Router
34 Mbit/s
MMU1
Operation &
Maintenance
Interfaces
MMU 1
MMU 2
Secondary
voltages
MMU
Alarms from MMUs
Control &
Supervision
1 + 1
Switch Logic
DC/DC
Converter
NCC
Other units in
the access module
(1+1 only)
34+2
34+2
4x2 or 8
Traffic
Interface
and
Router
2/8
Multiplexer
Demultiplexer
Connection to front
or other SMU/MMU
4x2 or 8
4x2 or 8
4x2 or 8
Connection to front
or other SMU/MMU
Connection to front
or other SMU/MMU
Connection to front
or other SMU/MMU
2
8
8
34
8
MMU1
(When SMU 16x2 is
shared between
two radios 8x2, 1+0)
MMU2
2 Mbit/s is connected to
MMU1 and is distributed
further to MMU2
MMU2
2x8, 1+0
2x8, 1+0
2
2
2
8
2
2
2
2
8
8
2
2
2
2
8
2
2
2
2
8
Traffic
Interface
and
Router
Traffic
Interface
and
Router
Traffic
Interface
and
Router
2/8
Multiplexer
Demultiplexer
2/8
Multiplexer
Demultiplexer
2/8
Multiplexer
Demultiplexer
8
8
8
8
8
8
3551
Figure 44 SMU 16x2 block diagram
As an alternative SMU 16x2 can be used to provide 1+ 1 protection switching
for 4x2 and 8x2 Mbit/s traffic.
56
AE/LZT 110 2012 R8C 2002-03-04