Dsl architecture pdf

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Citation Type. Has PDF. Publication Type. More Filters. In model-driven development MDD , domain-specific modeling languages DSMLs act as a communication vehicle for aligning the requirements of domain experts with the needs of software engineers. With … Expand. View 1 excerpt, cites background.

Extracting reusable design decisions for UML-based domain-specific languages: A multi-method study. View 15 excerpts, cites results, methods and background. Reusable and generic design decisions for developing UML-based domain-specific languages. View 25 excerpts, cites background, methods and results. Two controlled experiments on model-based architectural decision making.

Engineering, Computer Science. View 2 excerpts, cites methods and background. ACM Trans. View 2 excerpts, cites methods. View 3 excerpts, cites background and methods. The service providers interested in this feature should examine the extent to which it is supported in different technologies.

As it can be seen, industry and technology have changed dramatically since the tone Video ADSL standards decision in March In some cases, DSL concepts have been applied to existing technologies. In this scenario, as with all DSL variants, the data service is directed to an extended data service, rather than of a switched network. While IDSL is based on proven technology, it is functionally an ISDN subset in that it waives any possibility to support the switched telephone service and connectivity in general.

Another key benefit is that because IDSL uses ISDN signaling methods, it is capable of transmitting over copper pairs that are served by digital loop carriers. These technologies offer operating ranges between Kbps and 2. It composed of large organizations in the telecommunications, networks and personal computers. This group was formed to develop low speed and the alternative cost of ADSL that could be installed, while the consumers were rapidly deployed by service providers.

Significantly, G. A part of the G. This helps to minimize interference and restore power, when the phone is back on the hook.

ReachDSL also operates in spectrum management class to offer better range and higher speed. VDSL systems are still being developed, so that the final capacity is not yet well established, but the proposed standards require downstream bandwidths up to 52 Mbps symmetrical bandwidth up to 26 Mbps.

The compromise in these bandwidths is a shorter loop section, often as short as feet for higher bandwidths possible bands, with adaptation of speed at lower speeds than the length of the loop increases.

The high speeds offered by VDSL bring opportunities for service providers to deliver the next generation of DSL services , with the video being considered as a first application. Some service providers have started VDSL systems deployment tests that provide these services with the endpoint VDSL appearing in the residence as a set-top box such as cable TV with an Ethernet or other data interface for connection to a PC for simultaneous data services.

The basic principle of DSL is a local loop technology in which compatible devices reside on each end of a single copper wire loop ensures that new DSL technologies continue to emerge over time. A strategic point for the service provider is to ensure that the selection of a specific technology or DSL network model for the deployment of services today will not limit options to adopt new technologies in the future.

Seamless Rate Adaptation SRA enables the modem to change rates and bit loading to maintain a minimum per bin margin without re-training.

GlobespanVirata Inc. The main objectives are Power Saving and cross-talk minimization. Optional remote bandplan enables deployment from Remote Cabinets without degradation of services from the CO. Doubles downstream spectrum from 1.

The foundation of the specification has a mandatory non-overlapped PSD definition together with an optional overlapped PSD definition.

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