Ericsson ECN320, User Manual

Page: 14 / 188

Introduction to the ECN
6
1553-CNH 160 0787 Uen PA2 2005-09-23
For Information about the ECN330-switch refer to
ECN330-switch User’s
Guide. For Information about the ECN320/ESN310 switch refer to ECN320
User Guide
2.1 Topology of the EAN
Depending on how the topology of the EAN is designed, based on the
nodes described above, the supported number of end-users may vary.
Below in Figure 1 on page 6 an example of how the topology of an EAN
can be designed is shown with IP DSLAMs connected either directly to the
ECN or through the 8-port switch ESN108.
Fully extended with ESN108 switches on all 24 ports of the ECN and eight
12-ports IP DSLAMs on all ports of the ESN108 will enable the EAN to
support 2304 end-users.
Another realization of the EAN is the EDN288, which is a pre-cabled solu-
tion, delivered in a subrack. The EDN288 contains one ECN with the 12-
line IP DSLAM (EDN312) connected to all 24 ports, and thus supports 288
end-users. For a more detailed description of this specific EAN please see
the
EDN288 User Guide and the EDN288 Installation Guide .
PEM
Ethernet Access Node
ESN108
(optional)
EDNXXX
ECN
Alarm
DHCP
FTP
TFTP
SNTP
Config SW
Ethernet
Management
Proxy
Towards
broadband
backbone
Figure 1 The EAN with ESN108 and IP DSLAMs