Ericsson MINI-LINK TN R3 ETSI Technical Description page 40

MINI-LINK TN R3 ETSI
TDM Bus
PCI Bus
SPI Bus
Power Bus
Figure 36
3.6.3.1.1 TDM
This block interfaces the TDM bus by receiving and transmitting the E1s used
to carry Ethernet traffic.
3.6.3.1.2 Inverse Multiplexers
Each inverse multiplexer converts one Ethernet connection into nxE1, where
n≤16, transmitted to and received from the TDM block.
3.6.3.1.3 Ethernet
This block provides the unit's external Ethernet interfaces. Each interface is
linked to one inverse multiplexer.
The Ethernet Traffic function offers 8 priority queues in both directions to/from
the Ethernet ports. The mapping follows IEEE 802.1D 2004 strict priority
queuing and can be configured, per node, to use 1–8 of the queues. Which
queue to use for untagged packets can be configured per port and direction.
34
TDM
Control and
Supervision
SPI
Secondary
Power
voltages
Block diagram for ETU2
Inverse
Multiplexers
10/100/1000BASE-T
nxE1
nxE1
nxE1
nxE1
nxE1
nxE1
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
Ethernet
10/100BASE-T
10/100BASE-T
10/100BASE-T
10/100BASE-T
10/100BASE-T
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