Ericsson MINI-LINK TN R3 ETSI - 5.3 ATU C

MINI-LINK TN R3 ETSI
5.2 ATU
This section describes the functions of ATU.
The available traffic capacity, 2x2, 4x2, 8x2 and 17x2 Mbit/s, can be shared
between:
• PDH traffic with a maximum of 8xE1.
• Ethernet traffic over a maximum of 16xE1.
60V RAU
0V DC
-48V
10BASE-T
O&M
BR
LAN
Bridge
E1:11
E1:10
E1:9
E1:8
E1:7
E1:6
E1:5
E1:4
10/100B
ASE-
T
9964
10/100BASE-T RAU-48 V DC E1
10BASE-T
USB
Figure 81 ATU
The following summarizes the ATU functions:
• Eight E1 interfaces
• One 10BASE-T Ethernet interface for connection to a site LAN
• One 10/100BASE-T Ethernet interface for Ethernet traffic
• System control and supervision
• IP router for DCN handling
• SNMP Master Agent
• USB interface for LCT connection
• Filtering of the external power, providing secondary voltages and power
supply to the RAU
• Storage and administration of inventory and configuration data
• Multiplexing and modulation of traffic signals in the transmitting direction
• Demodulation and demultiplexing of traffic signals in the receiving direction
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