User guide

The EDA Access Network
8 1/1551-HSC 901 35/3 Uen C 2005-12-02
3 The EDA Access Network
The main objective of the EDA system is to support provisioning of IP
services to end-users. The EDA system supports this through:
• Network Access
• Service Access
Network Access means providing access through the Access Domain.
Service Access means managing the end-users access to IP services.
The EDA system is mainly focused on providing network access, but it also
provides several integrated service access solutions. In this way, the EDA
system provides a complete IP service-enabling platform, which offers IP
services such as Telephony over IP and Video over IP.
3.1 The Access Domain
An EDA network is divided into geographically separated Access Domains,
as indicated in the principle illustration of the Access Network shown in
Figure 3 on page 9, showing an EDA system where the network has been
divided into three Access Domains. Each Access Domain is managed
locally and has an interface to an operation and maintenance center that is
the PEM. Furthermore the Access Domain has a Domain Server assigned
to it. The Domain Server can be present in the Access Network in a
physical sense but may also be installed on a Management Server.
Basically, the Access Domain is capable of conveying any network layer
protocol, but the Internet Protocol (IP) is thought of as the absolute
dominant layer-3 protocol used within EDA. The end-users can access IP
services offered by different providers at their Point-of-Presence (PoP)
through the backbone network.
The Ethernet within an Access Domain may span a single or multiple
physical sites.
3.1.1 The Size of the Access Domain
An Access Domain has no theoretical size limit, but the practical size limits
(due to IP DSLAMs start-up time, and limitations of the management
system), are as follows: