HDSL e ADSL a confronto

Ben ritrovati a tutti i nostri lettori. In un articolo precedente abbiamo parlato di Fastweb e di HDSL, e già allora vi avevo anticipato che HDSL è una linea che, pur appartenendo alla famiglia delle DSL, ha delle caratteristiche molto particolari. Con l’articolo di oggi vorrei mettere HDSL e ADSL a confronto proprio per vedere quali sono le differenze, e magari dare qualche spunto di riflessione per chi intende acquistare o cambiare la propria linea di collegamento alla Rete.

ADSL: le caratteristiche

Con il termine ADSL (acronimo che in inglese significa Asymmetric Digital Subscriber Line, e che in italiano potrebbe essere tradotto con Linea a Noleggio Digitale Asimmetrica) si intende una tecnologia facente parte della famiglia delle DSL. Viene comunemente anche chiamata Tecnologia BroadBand (a Banda Larga). Le particolaritĂ  della linea ADSL sono:

  • ampiezza di banda trasmissiva piĂą grande in ricezione (download) che in invio (upload); i limiti attuali su ADSL di tipologia normale (quindi ADSL 1) sono da un minimo di 640Kbps fino ad un massimo di 9MB in download, e da un minimo di 16Kbps fino a massimo 512Kbps in upload; da questa “asimmetria” ne consegue l’appellativo di Asymmetric
  • la linea ADSL può coprire distanze fino a circa 5.5 Km (con un degrado progressivo che aumenta con l’allontanarsi dalla centrale telefonica di allacciamento), e può viaggiare sul normale “doppino telefonico” di rame di cui sono dotate tutte le abitazioni e le aziende
  • può essere installata sia in presenza di un contratto Telecom ma anche senza contratto Telecom
  • nel caso in cui si utilizzi la linea telefonica “normale” occorre separare i dati dalla fonia, e per questo compito si utilizza un piccolo dispositivo chiamato “splitter” (separatore, talvolta chiamato filtro ADSL)

HDSL: le caratteristiche

Il termine HDSL (acronimo dall’inglese di High Data Rate Digital Subscriber Line, ovvero Linea a Noleggio Digitale ad Alta Velocità) è una tecnologia nata parecchio tempo fa, con lo scopo di aumentare la velocità di trasmissione delle linee tradizionali. Utilizza sempre il doppino telefonico di rame, ma per funzionare necessita di una linea tutta sua. Le caratteristiche di HDSL sono:

  • ampiezza di banda trasmissiva molto alta: fino a 8MB
  • trasmissione dei dati simmetrica, ovvero si può avere la stessa velocitĂ  sia in upload che in download
  • richiede per il collegamento un router di tipo V35, che normalmente viene concesso in comodato d’uso all’atto del contratto
  • supporta solo la linea dati (e non la fonia) però permette di utilizzare il VoIP (Voice Over IP), che è la soluzione adottata ad esempio da Fastweb

HDSL e ADSL a confronto

  • ADSL è piĂą economica, dunque può essere usata in ambito aziendale ma soprattutto domestico
  • HDSL è piĂą costosa e quindi è pensata per un uso aziendale
  • ADSL è un servizio con “minimi garantiti” a volte anche molto bassi, quindi va bene per chi non ha necessitĂ  di garanzie di traffico minimo disponibile
  • HDSL viene normalmente fornita con “minimi garantiti” assai elevati, ideale per chi ha bisogno di performance stabili e senza degrado di funzionamento
  • ADSL funziona anche su un impianto telefonico esistente, sebbene sia possibile richiederla in modalitĂ  senza canone Telecom
  • HDSL necessita di un linea dedicata, per cui è compito dell’operatore di telefonia portare un doppino telefonico apposito
  • ADSL funziona con un normale Modem/Router ADSL: può essere acquistato dall’utente (con un costo a partire dai 30-40 Euro) oppure preso a noleggio dall’operatore di telefonia
  • HDSL necessita di un Modem/Router che supporti il protocollo V35: l’apparato normalmente viene concesso in comodato d’uso dall’operatore di telefonia, ovviamente a fronte di un costo piĂą elevato che un modem normale
  • ADSL ha una velocitĂ  asimmetrica, ideale per chi usa Internet soprattutto per scaricare dati
  • HDSL ha una velocitĂ  simmetrica, ideale per le aziende che devono pubblicare dei dati su Internet ad esempio con un server “interno”

Speriamo dunque che questo semplice confronto fra HDSL e ADSL possa aiutarvi a fare la scelta migliore per la vostra linea.

43 Comments

  • john wick
    Posted 10 December 2020 17:18 0Likes

    Really nice style and design and excellent content material , very little else we need : D. Joellyn Sherwood McMaster

  • porno
    Posted 14 December 2020 21:43 0Likes

    I believe everything published made a great deal of sense. Zuzana Finley Brana

  • sikis
    Posted 17 December 2020 9:25 0Likes

    Thank you for the auspicious writeup. It actually was once a enjoyment account it. Teena Swen Royo

  • bahis
    Posted 17 December 2020 22:38 0Likes

    There is certainly a great deal to find out about this issue. I like all the points you have made. Rosalynd Napoleon Edina

  • erotik
    Posted 18 December 2020 5:23 0Likes

    This site truly has all of the information and facts I wanted about this subject and didn at know who to ask. Ivett Freeman Krell

  • sikis
    Posted 18 December 2020 9:01 0Likes

    Well I truly enjoyed reading it. This subject offered by you is very useful for accurate planning. Lisa Tymon Aila

  • sikis
    Posted 18 December 2020 10:49 0Likes

    For at least the 1st 15 minutes, There is certainly hardly a pause from the narrational dialogue. Aloysia Hillie Mitchael

  • erotik
    Posted 18 December 2020 13:11 0Likes

    There is evidently a bundle to realize about this. I consider you made some good points in features also. Blinny Delmore Leonteen

  • sikis
    Posted 18 December 2020 14:56 0Likes

    Dead written subject matter, appreciate it for information . Loella Hermon Chew

  • erotik
    Posted 18 December 2020 16:09 0Likes

    If you want to increase your knowledge only keep visiting this site and be updated with the latest information posted here. Jerrine Hazlett Emmeram

  • sikis
    Posted 18 December 2020 18:19 0Likes

    Hi friends, nice post and good arguments commented here, I am really enjoying by these. Jermaine Brendan Cody

  • sikis
    Posted 19 December 2020 5:48 0Likes

    Below you may pick the qualified professional United kingdom essays finished according to your recommendations. Adrian Rosco Arela

  • erotik
    Posted 19 December 2020 9:23 0Likes

    Below you will come across the link to some web pages that we consider you ought to visit. Adelaide Bendix Rozanne

  • erotik
    Posted 19 December 2020 10:47 0Likes

    Everything is very open with a clear clarification of the issues. It was really informative. Your site is extremely helpful. Thanks for sharing. Audie Francklyn Elsinore

  • sikis
    Posted 19 December 2020 12:49 0Likes

    Simply wanna comment on few general things, The website layout is perfect, the written content is real great : D. Gilemette Cesare Kleper

  • sikis
    Posted 19 December 2020 14:04 0Likes

    I like the helpful information you provide on your articles. Timmy Zaccaria Anabelle

  • sikis
    Posted 19 December 2020 15:58 0Likes

    I really liked your blog article. Much thanks again. Fantastic. Vonnie Wilek Euridice

  • erotik
    Posted 19 December 2020 17:39 0Likes

    No wind is of service to him that is bound for nowhere. Kiersten Shawn Lenz

  • ucretsiz
    Posted 20 December 2020 9:30 0Likes

    Only wanna state that this is extremely helpful, Thanks for taking your time to write this. Dorothea Stu Ja

  • ucretsiz
    Posted 20 December 2020 10:37 0Likes

    Please visit the internet sites we stick to, including this 1, as it represents our picks in the web. Minta Farrell Ethbinium

  • ucretsiz
    Posted 20 December 2020 15:03 0Likes

    Thanks for the auspicious writeup. It actually was a enjoyment account it. Lyndell Ferris Shawnee

  • torrent
    Posted 20 December 2020 19:31 0Likes

    We came across a cool web page which you may possibly take pleasure in. Take a appear in case you want. Jennine Brian Tucky

  • ucretsiz
    Posted 20 December 2020 20:01 0Likes

    Very good blog! Do you have any hints for aspiring writers? I am hoping to start my own site soon but I am a little lost on everything. Karrie Erhard Ruddy

  • bedava
    Posted 20 December 2020 21:46 0Likes

    Simply wanna say that this is invaluable , Thanks for taking your time to write this. Sharron Aaron Countess

  • bedava
    Posted 21 December 2020 6:03 0Likes

    Great article! We are linking to this particularly great post on our website. Keep up the great writing. Jeanelle Abel Sacksen

  • yify
    Posted 23 December 2020 4:37 0Likes

    Ahaa, its nice discussion about this article here at this website, I have read all that, so at this time me also commenting at this place. Lizabeth Delano Pinckney

  • erotik
    Posted 22 January 2021 0:26 0Likes

    Et insolens assentior nec, id mea delicatissimi concludaturque. Ne vis tantas melius quaestio, mucius semper ad mea. Shannon Duff Dorothea

  • Corina
    Posted 29 January 2021 11:17 0Likes

    It’s difficult to find knowledgeable people about this subject, however, you sound like you know what you’re
    talking about! Thanks

    my site :: cheap flights

  • Merri
    Posted 29 January 2021 13:03 0Likes

    I have read so many posts regarding the blogger lovers but this piece of writing is in fact a fastidious piece
    of writing, keep it up.

    Take a look at my site cheap flights

  • Marquis
    Posted 31 January 2021 11:30 0Likes

    Wow, fantastic blog layout! How long have you been blogging for?
    you make blogging look easy. The overall look of your website is great, as well as
    the content!

    Feel free to surf to my web site cheap flights

  • Rolland
    Posted 1 February 2021 5:28 0Likes

    It’s remarkable to pay a quick visit this web site and reading the
    views of all friends concerning this article, while I am also eager
    of getting experience.

    Also visit my blog post :: cheap flights

  • Hulda
    Posted 1 February 2021 19:08 0Likes

    It’s nearly impossible to find experienced people about this topic, but you sound like you know what you’re talking about!
    Thanks

    my homepage cheap flights

  • Nina
    Posted 2 February 2021 22:03 0Likes

    My developer is trying to persuade me to move to .net from PHP.
    I have always disliked the idea because of the costs.

    But he’s tryiong none the less. I’ve been using Movable-type on a number of websites for about a year
    and am concerned about switching to another platform.
    I have heard great things about blogengine.net.

    Is there a way I can transfer all my wordpress posts
    into it? Any help would be greatly appreciated!

    Feel free to surf to my site: cheap flights (http://tinyurl.com/y24rg649)

  • Aisha
    Posted 2 February 2021 22:50 0Likes

    Thanks for finally writing about > HDSL e ADSL a confronto – Francesco Lenzi |
    Energia Gas e Telefonia a Pistoia < Loved it!

    Review my blog post; cheap flights

  • Richard
    Posted 3 February 2021 9:53 0Likes

    Having read this I believed it was really enlightening.
    I appreciate you finding the time and energy to put this short article together.
    I once again find myself personally spending a significant amount of time both reading and posting comments.
    But so what, it was still worthwhile!

    My web page – cheap flights (http://tinyurl.com)

  • diziler
    Posted 9 February 2021 14:08 0Likes

    peut on beneficier d annee de retraite pour etre au cote de mon conjoint handicape a 50% . Renie Payton Yuri

  • Candice
    Posted 12 February 2021 4:49 0Likes

    Just want to say your article is as amazing. The clarity in your post is just spectacular and i could assume you are an expert on this subject.
    Fine with your permission let me to grab your RSS feed
    to keep updated with forthcoming post. Thanks a million and please
    continue the gratifying work.

    My homepage … cheap flights; http://tinyurl.com/,

  • online
    Posted 13 February 2021 11:57 0Likes

    Really appreciate you sharing this post. Really thank you! Will read on Keeley Bogey Sunderland

  • Annie
    Posted 16 February 2021 8:37 0Likes

    Dresden Files List Water Science And Technology Impact Factor

    Review my page; wordpress.com (vigorous-snyder-fa1026.netlify.app)

  • Belinda
    Posted 16 February 2021 18:11 0Likes

    Anna And The French Kiss Ebook Download James Michener Most Popular Books

    Review my blog: read online

  • Maxie
    Posted 16 February 2021 21:19 0Likes

    Read Books Online Free India School Science Fair Result

    Feel free to visit my blog post; ebook

  • Lorenzo
    Posted 17 February 2021 0:05 0Likes

    The Pilgrim’S Progress From This World To
    That Which Is To Come Solid State Physics Oxford

    Review my blog post … book epub (https://iratgradzio1972.netlify.app)

  • Kristan
    Posted 18 February 2021 4:36 0Likes

    Epic Reading For Students Delia Owens Amazon

    my web blog; wordpress.com

Leave a comment

Iscriviti alla nostra newsletter e rimani aggiornato su tutte le novitĂ  e le offerte per la tua azienda!

Valuta la tua fattura

Invia una delle tue attuali fatture di telefonia ed energia e scopri come poter migliorare il tuo business

Iscriviti alla newsletter

Francesco Lenzi | p.iva 01027350477 | Privacy Policy e GDPR

TheTop