Ericsson MINI-LINK TN R4 ETSI, Technical Description

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Technical Description
3.3.2.4 Power
This block interfaces the Power bus and provides secondary voltages for the
unit. All plug-in units have a standard power module providing electronic soft
start and short circuit protection, filter function, low voltage protection, DC/DC
converter and a pre-charge function.
3.3.2.5 Node Processor
The Node Processor is the central processor of the NE, responsible for the
traffic and control functions listed in Section 3.3.1 on page 18.
3.3.2.6 High Speed
This block provides Point-to-Point connections to other PIUs via the High
Speed Bus.
3.3.2.7 Line Interface
This block provides the E1 line interfaces for external connection.
3.3.2.8 Ethernet
This block provides a 10/100BASE-T connection to site LAN for NPU1 B and
NPU3, but for NPU3 it also provides a 10/100BASE-T traffic connection for
Ethernet bridge applications. The Ethernet traffic is mapped on NxE1, where
N
≤
16, using one inverse multiplexer.
For NPU3 B this block provides two 10/100/1000BASE-T interfaces, one for
Ethernet Traffic and one for Ethernet Traffic or 10/100BASE-T Ethernet Site
LAN. The Ethernet traffic is a switched service from the Ethernet switch.
See Section 3.7 on page 35 for more information on Ethernet traffic.
An IP telephone can be connected to the Ethernet interface, enabling service
personnel to make calls to other sites. This digital Engineering Order Wire
(EOW) solution utilizes VoIP in the IP DCN. For more information on EOW for
MINI-LINK, see
MINI-LINK Engineering Order Wire Feature Description .
3.3.2.9 Ethernet Switch
This block provides the Ethernet switching to and from the high speed bus. The
Ethernet switch supports both LAN and VLAN switching. The switch is also
hardware prepared for Provider bridge.
3.3.2.10 O&M
This block provides the MINI-LINK Craft connection to the NPU using a USB
interface. The equipment is accessed using a local IP address.
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