User guide

The EDA Concept

1/1551-HSC 901 35/3 Uen C 2005-12-02

2.1 ADSL Standards

The EDA system supports the following ADSL standards:

• ITU-T G992.1 Annex A (ADSL over POTS)

• ITU-T G992.1 Annex B (ADSL over ISDN)

• ITU-T G992.2 (ADSL Lite)

• ITU-T G992.3 Annex A (ADSL2 over POTS)

• ITU-T G992.3 Annex B (ADSL2 over ISDN)

• ITU-T G992.3 Annex L (Extended Reach)

• ITU-T G992.3 Annex M

• ITU-T G992.5 (ADSL2+) Annex A and B

• ITU-T G992.5 Annex L and M

Broadband Access over the Local Loop: Like traditional DSL systems

EDA provides broadband access over the local loop copper wires.

Traditional ADSL systems are based on a DSL access multiplexer

(DSLAM), which terminates the ADSL protocol layer towards the end-user.

The ATM connections running on top of the ADSL layer may be terminated

locally in an access node, or they may be conveyed over an ATM backbone

network to a remote Service Provider. New end-users obtain ADSL access

through individual wires drawn from their position in the main distribution

frame (MDF) to the DSLAM.

Transmission technology shift from ATM to Ethernet: With EDA the

main transmission technology is shifted from ATM to Ethernet. Compared

to ATM, the Ethernet technology is superior on important areas like

scalability, simplicity and equipment cost.

IP all the way: EDA deploys an “IP all the way” system supporting

integrated high-speed always-on triple play services (data, video and voice)

and supports more advanced services such as multicasting. EDA also

provides an innovative solution for base band telephony.