Yearly Archives: 2014

Achieving high quality transmission with copper requires responding appropriately to various changes in the noise environment. These changes can be intermediate (caused by impulse noises or temperature), or they can be more permanent in nature (such as changes in noise introduced as other services are added to or removed from the binder).
"Rate adaptive" capability allows modems to adjust their performance to ensure high reliability and service availability by lowering their bandwidth and increasing their SNR. This feature is widely implemented by EFM over Copper vendors. Rate adaptation has its benefits, particularly in addressing longer-term sources of noise (such as a change in the services that exist within a binder). But rate adaptation is not very effective in dealing with intermittent interference, as it allows the bandwidth on the link to drop when intermit interference occurs. More is needed to solve these temporary noise problems.

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The European Union’s revised Digital Agenda for Europe stipulates the following service objectives by the year 2020:

• 30 Mbps to all Europeans
• 100 Mbps to 50% of European households

Can the lofty objective of getting 100 Mbps service to 50% of households really be achieved in the next 6.5 years? This is an eventuality which even the European Commission itself has questioned recently, due to the high cost and logistical “red tape” associated with running fiber.

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Service operators are struggling to find cost effective solutions to enable them to offer faster broadband to their residential and SME customers before losing business to competitors. FTTH/B cannot be justified everywhere. Moreover service providers worldwide indicate that although FTTH is a solution that they will continue to deploy it would not be THE solutions for the large BB deployments in the next years.

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ITU-T Y.1564 is an essential tool used by carriers to increase their differentiation by offering higher service assurance and cost effective
SLA validation. Implementation of Y.1564 within an Ethernet Access Device (EAD) enables generating and analyzing traffic to validate that
internal or customer-facing KPI performance metrics such as throughput, frame loss, latency, and frame delay are continually being met.

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