Paradyne Can Help
|January 2003 - Paradyne's customers are not relying
on problematic HPNA equipment to satisfy important guest connectivity needs.
Install BitStorm ADSL solutions and connect your guests with confidence!
Deploying high-speed services in the Hospitality
and other in-building environments (MxU) is not as easy as many assume.
There are many demands on the distribution network in a hotel complex that
greatly tax the performance of the access technology. A service provider
and the building management or ownership group must carefully consider
the trade-offs between the initial costs incurred (purchase and installation),
performance, and long-term reliability when choosing an access platform.
The following is a brief discussion of two examples of access technology, Home Phone Line Network Alliance (HPNA) and Asynchronous Digital Subscriber Line (ADSL) and their suitability for MxU deployment.
The electrical conditions of a hotel or apartment building facility can be surprisingly hostile to communications networks. Some of the more prevalent issues that may be present in the cable riser are:
Conversely, HPNA was designed as a short reach, multipoint system for a single residence. HPNA was not designed for in-building riser deployments. HPNA has not demonstrated consistent performance on all in-building lines due to sensitivity to bridged taps and other interference found in the building.
ADSLís performance advantage relative to HPNA for MxU applications is due to its use of spectrum. First, ADSL is attenuated much less than HPNA in the run from the basement to the endpoint location. Second, ADSL is much less susceptible to wiring disturbances along the riser and at the endpoint location.
The figure shown below demonstrates the advantage
that ADSL has over HPNA in frequency placement and also total power. The
ADSL pass-band (left) is in the lower frequency range from 138kHz to 1.104
MHz. The HPNA pass-band (two smaller lobes on right) is from 4MHz to 10
MHz with a notch at about 7 MHz. ADSL is less susceptible to attenuation
and disturbance effects.
ADSL continues to be deployed on a world-wide basis and chip set vendors and equipment manufacturers have continued to reduce the equipment costs. The same cannot be said for HPNA. Although the HPNA standards continue to evolve, there are very few chip set vendors and equipment manufacturers that have been producing new equipment based on these new standards. This is especially true for systems that must be designed for multi-dwelling environments such as hotels and apartment complexes.
The deployment of an ADSL based system will insure that all rooms in a hotel or all apartments can be reached with broadband services, even in a campus topology. ADSL offers the advantage of a standards based technology with very low cost CPE modems that continues to evolve and improve in both performance and costs.
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|Paradyne (NASDAQ: PDYN) develops, manufactures, and markets network equipment to enable voice and high speed data over existing telecommunication infrastructure, worldwide. With headquarters and manufacturing in Largo, Florida USA, the company's products are used in over 90 countries, powering hundreds of telephone companies' data networks and over half the Fortune 500 enterprise networks.|
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