APC IP DSLAM Guida Utente Pagina 59
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EDA 1200 Nodes
4.5.1 EPN210
The EPN210 is a -48 V DC rod mounted power
distribution unit, capable of distributing power to
10 devices. EPN 210 supports power distribution
for EDN612, ESN212 and EDN312x (power fed
through Power over Ethernet). EPN210 can deliver
up to 2A on a single port, though maximum 500 W
in total. ESN212 supports power redundancy.
EPN210 is compact and environmental hardened,
and therefore very suitable for installation and use in
both Central Office and a remote roadside cabinet.
EPN210 is used to distribute power to EDN612 and
ESN212. It can also be used to power an EDN312x,
through one of the uplink ports. However, when this
is done the port cannot be used for traffic.
4.5.2 EPN102
The compact 2-port Ethernet Power Node EPN102
implements an elegant way of providing power at
small sites. The main functionality is to supply
–48 V DC onto two of the spare wires in the
standard Ethernet cable. EPN102 provides one
Ethernet input port and one Ethernet output port
for connection to an Ethernet aggregation switch
and an IP DSLAM (EDN312x), respectively. Both
ports provide Power over Ethernet (PoE) output.
This allows for power feeding of both an IP DSLAM
and Ericsson’s Fast Ethernet to E1/T1 converter
(EXN104) in case an N*E1 uplink is preferred.
The Ethernet Power Node (EPN) operates from the
supply voltage in an input range from –40.5 to –60 V
DC and will provide output voltage accordingly, with
a voltage drop of less than 2 Volts.
EPN102 is capable of delivering up to 21 Watts per
port. A remote sensing circuit connects power when
required on each individual output – similarly power
will automatically be disconnected when load is
removed from the output.
4.5.3 Remote Powering
Remote powering is a concept for distributing DC power over existing twisted
pairs up to 10 km. The concept is typically for use in broadband applications,
55
1/1551-LZA 101 464-V1 Uen C 2009-12-17
- EDA 1200 System Overview 1
- Contents 3
- 1 Introduction 5
- 2.1 EDA 1200 Concept 7
- 2.1.2 Access Network 12
- 2.2 EDA 1200 Realization 15
- 2.2.2 Network Devices 17
- 2.3 GPON Features 18
- 2.4 Security in the Network 18
- 3 EDA 1200 Services 23
- 3.1.1 Traffic Mapping Rules 25
- 3.1.2 Traffic Mapping Schemes 26
- EDA 1200 Services 27
- 3.1.3 Access Methods 33
- 3.2.1 Traffic Classification 35
- 3.2.2 Differentiated Services 36
- 3.3 Multicasting 37
- 3.3.2 Multicast Applications 40
- 4 EDA 1200 Nodes 43
- EDA 1200 Nodes 45
- 4.1 IP DSLAMs 46
- 4.1.1 24-line IP DSLAM EDN624 47
- 4.1.2 12-line IP DSLAM EDN612 47
- 4.2 Ethernet Access Nodes 51
- 4.3 Ethernet switches 52
- 4.3.1 ESN212 53
- 4.3.2 ESN204g 53
- 4.3.3 ESN108 54
- 4.3.4 EMN120 55
- 4.3.5 ESN410 56
- 4.5 Power Nodes 58
- 4.5.1 EPN210 59
- 4.5.2 EPN102 59
- 4.5.3 Remote Powering 59
- 4.6 Converters 60
- 4.7 Housing Solutions 62
- 4.8 North American Solution 66
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