User guide

The EDA Concept
2 1/1551-HSC 901 35/3 Uen C 2005-12-02
2 The EDA Concept
The EDA system can be tailored to a wide range of access scenarios,
depending on the actual requirements to function and performance.
Performance requirements are about for example the number of end-users
that the access system can handle, and the bandwidth allocated to the end-
users. The functional requirements are more versatile, covering for
example which IP services to support, how to ensure security and privacy,
and how to provide options for service selection.
Both performance requirements and function requirements will often vary
significantly from one access scenario to another. Consequently, the EDA
system is designed to allow adaptation to almost any possible scenario.
The demand for broadband access to homes and small businesses is
rapidly increasing these years. Several technologies have been developed
to meet this demand - one technology is DSL (Digital Subscriber Line).
In DSL the telephony copper lines between end-users and the local
exchange are used for providing high-speed data access.
There are several types of DSL, characterized by a theoretical maximum
data rate offered to the individual end-users. Today, the most common type
is Asymmetric DSL (ADSL) in which the maximum data rates are
approximately 8 Mbps downstream (to the end-user), and 1 Mbps upstream
(from the end-user).
EDA is the product name for Ericsson’s ADSL access system. The concept
sets a new standard for implementing digital access systems in a fast,
flexible and future-proof way. EDA solves the major problems faced by
operators who want to go for mass-deployment of ADSL. These problems
include the relatively large number of man-hours required to install,
configure and manage traditional ADSL systems, the size and poor
scalability of these systems, and the growing requirements to provide
flexible unbundling of the local loop. The following summarizes the EDA
concept:
• Complete ADSL concept providing Ethernet based access
• Ultra compact DSLAM
• Developed and optimized for easy deployment and maintenance
• Adaptable to any broadband access scenario and penetration rate
• Well suited for unbundling scenarios