NOTICE This contribution has been prepared to assist ANSI Standards Committee T1 Telecommunications. This document is offered to the Committee as a basis for discussion and is not a binding proposal on Texas Instruments. The requirements are subject to change after further study. Texas Instruments specifically reserves the right to add to, ammend, or withdraw the statements contained herein. Ab...

It is evidence that the demand for Asymmetric Digital Subscriber Line (ADSL) connections increases day by day in all European countries as much as worldwide and it is well known that Internet’s penetration is considerably amazing. At the same time, due to the fierce competition among ADSL connections providers, several packages are offered in attractive tariffs. As a product consists of various...

There is renewed interest in existing copper networks since the introduction of Asymmetric Digital Subscriber Line (ADSL) technology. ADSL will soon be available in South Africa, opening the broadband market to prospective users. As many users are placed within the same cable, they interfere with each other. Service providers want to guarantee the supplied data rate to the customer, even as the...

Asymmetric Digital Subscriber Loop (ADSL) technology is a new platform for delivering broadband services to homes and small businesses, thus bringing the information highway to the mass market. Successful deployment of an ADSL-based access network is not only a matter of delivering faster rates, but also offering solutions that are cost-effective and easy to use and to manage. As deregulation a...

Many French Internet providers include an ADSL box in their offers allowing the customer to easily take advantage of all the services included in the offer. This equipment drastically reduces the technical skills required to install the Internet connection at home. But, to our knowledge, very few studies propose to evaluate the security of these ADSL boxes. This is the purpose of this paper. Th...

Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo defines a portion of t...

The very rapid adoption of new applications by some segments of the ADSL customers may have a strong impact on the quality of service delivered to all customers. This makes the segmentation of ADSL customers according to their network usage a critical step both for a better understanding of the market and for the prediction and dimensioning of the network. Relying on a “bandwidth only” perspect...

Near-end crosstalk (NEXT) is one of the major impairments to the current ADSL downstream transmission. This paper presents two methods for an ADSL receiver to cancel one (dominant) NEXT signal from other types of services (such as HDSL, SDSL, T1, etc). The methods exploit the fact that the crosstalk signal has a large excess bandwidth and its spectra in the main lobe and in the excess band are ...

The very rapid adoption of new applications by some segments of the ADSL customers may have a strong impact on the quality of service delivered to all customers. This makes the segmentation of ADSL customers according to their network usage a critical step both for a better understanding of the market and for the prediction and dimensioning of the network. Relying on a "bandwidth only" perspect...