Netcomm IP DSLAM Manuel D’Utilisation

This document is intended for First Office Acceptance test plan for NetComm’s ADSL2+ 

Broadband Access Switch solution (BAS). The Netcomm NCT240 Broadband Access Switch 

contains 24 ADSL2/2+ circuits to deliver high-speed data, video and voice service over 

traditional twisted copper pairs by using DSL technology.   

 

To meet the increasing demand for high-speed internet access and triple play application 

services. The next generation network offers a feasible functionality of integrated services 

with the most cost effective architecture. Next generation broadband access networks are 

designed to provide rich video contents, DSL , POTS and VoIP services over traditional copper 

wire infrastructure. These types of services will be supported on NGN architecture 

simultaneously. DSL is used as the data service platform for traditional POTS technology 

which is used for voice services. The multimedia and local content-rich applications can also 

be easily implemented on this NGN architecture. 

 

xDSL (Digital Subscriber Line) is a technology for delivering high-bandwidth information over 

copper telephone lines. xDSL service can deliver POTS and high date rate services 

simultaneously over a single twisted-wire pair. The POTS and data service are simultaneous 

and independent; the xDSL data service does not affect the POTS service. xDSL uses the 

bandwidth above the 4-kHz POTS frequency to transmit duplex data using digital modulation 

techniques from the C.O side to the Customer Premises Equipment (CPE). 

 

ADSL is a form of xDSL service that delivers an asymmetric data rate over a twisted copper 

pair. ADSL delivers a higher rate downstream, towards the customer premises and lower rate 

upstream, from the customer premises. ITU standard compliant Full-Rate ADSL2+ can deliver 

data rates up to 25 Mbps downstream and 1 Mbps upstream; Full-Rate ADSL can deliver data 

rates up to 8 Mbps downstream and 800 kbps upstream; G.Lite ADSL can deliver up to 1.5 

Mbps downstream and 512 kbps upstream. The actual data rate depends on the length, gauge, 

and condition of the twisted-wire pair, the bandwidth of the uplink depends on the data 

network, and the capacity of the network service provider. 

 

Digital Subscriber Line (DSL) dominates broadband market. The position of national telecom 

operators in most countries has given the advantage in reaching out to customers with 

broadband services over DSL.