ADSL - ntoni na? Umgaqo ukusebenza, isantya esiphezulu, eluncedo nengeloncedo zobugcisa ADSL

ADSL - a nobuchwepheshe ukufikelela yezi kwi Internet. Kuyinto ezakheke yezi kunye nenkqubo unako ukusebenza ngesantya of iikhompawundi, lwathi ukuya ku-8 Mbit / s. ADSL-technology, ebalwayo izinga ukudlulisela ukuya ku-1 Mbit / s, iMisebenzi umgama avareji ye-5 km. Namhlanje sijonga uhlobo uhlobo lonxibelelwano kwaye isebenza njani.

Indaba

Ngaphambi kokuba siphendule lo mbuzo: - esiyinika ingqalelo yakho data kangako kwimbali "ADSL ukuba yintoni na,?". Ngokuba lixesha wokuqala ukudalwa data ngesantya esiphezulu nokuthetha 80s emva kwexesha, xa Internet nkqu ngohlobo lwalo kuphela phithi. msebenzi wakhe uphambili ngo-1989 yaba kukuphuculwa Ukuphuculwa iteknoloji ugqithiso lwedata phezu ngobhedu iingcingo ngomnxeba. Analog-to-digital conversion wadalwa ikakhulu yokudluliswa olukhawulezayo lolwazi phakathi kweenkonzo ezahlukeneyo interactive, imidlalo yevidiyo, iifayile yokuzonwabisa, kwakunye nokubonelela nonikezelo olumiyo kude kwi LAN kunye nezinye iinkqubo womnatha.

Modern ADSL-technology: umgaqo yokusebenza

network Action isekelwe kumgca umrhumo digital ukuba amajelo zeefoni enikezela unikezelo kwi Internet. Kodwa uneefowuni usebenzisa uphawu analog kuba imiyalezo yelizwi. ADSL-uxhulumaniso yenzelwe ukuze uphawu analog aguqulwa digital ulithumele ngqo kwikhompyutha. Ngelo xesha, xa nshita imodem sele lixesha Dial-up, izixhobo ADSL-based musa ukuvimba mnxeba uze uvumele ukusetyenziswa lwemiqondiso digital kunye analog ngaxeshanye.

Eli technology (yezi) kukuba rhumela ufumana isixa esikhulu lwe data - yezithuthi engenayo, kunye ngokwalo udlulisa ubuncinane kweenkcukacha --traffic kwindawo engezantsi. Njengoko ongenayo kwakuthetha zonke iintlobo Umxholo: ividiyo kunye namajelo eendaba iifayile, izicelo, iinkqubo, imizobo izinto. Ukuhla ithumela inkcazelo ebalulekileyo kuphela zobugcisa - imiyalelo ezahlukeneyo imibuzo, emails, kunye nezinye izinto ezincinci. Le asymmetry kukuba izinga kwinethiwekhi ukuya umnini izihlandlo eziliqela isantya ephezulu evela kumsebenzisi.

Uncedo ibalulekileyo ubephethwe ADSL-nobugcisa kwibhajethi yaso kunye nokusebenza. Inyaniso yokuba inkqubo usebenzisa ngcingo yomnxeba zobhedu efanayo. Inani ngababini ezijijekileyo kubo, Kakade ke, zingaphezu kakhulu inani izinto ezifanayo imodem intambo. Kodwa kwangaxeshanye musa akuyomfuneko ukwenza nayiphi na maxesha kwezixhobo ukuguqukela kunye nokwakhiwa ezintsonkothileyo. ADSL elidityaniswe iintlobo ngokukhawuleza neyanamhlanje iimodem ukuba ongenantandabuzo ukusebenza uze ulungiselele.

Ziziphi izixhobo isetyenziselwa oku?

Ukuze ukuba ubugcisa emsebenzini, sebenzisa iintlobo ezikhethekileyo imodem, eziya kwahluka kubume, uyilo, uhlobo lonxibelelwano:

• PCI-imodem (izixhobo zekhompyutha lwangaphakathi).
• Iimodem bangaphandle kunye nohlobo lwe USB.
• Devices ne Ethernet interface uhlobo.
• Umzila, imizila kunye Ethernet beesekethe.
• iintlobo ezikhethekileyo ze imodem (kwiinkampani zokhuseleko, imigca ifowuni yabucala).
• Umzila ngamanqaku zangaphakathi ze Wi-Fi ukufikelela.

Ezongezelelweyo izixhobo: gqiphu kunye microfilters

Asimele silibale ukuba sokudityaniswa igajethi ezifana i ADSL-imodem, nakwezithiwe gqiphu kunye microfilters ezifunekayo. Izixhobo zikhethiwe ngokungqinelana kuyilo yocingo. Kwi imeko apho lo walivala ithende cable wenziwe (okanye yenziwe) ukunyibilikisa channel imodem kunye yokuchaka yomnxeba iyasetyenziswa. Kuzo zombini ezi meko, ufuna ukuthenga microfilter, nto leyo ifakiwe zonke ifowuni ekhoyo kweli gumbi.

Umsebenzi ophambili we-yokuchaka kukuba ukwahlula amaza - voice (0,3-3,4 kHz) yaye isicelo ngqo modem (25 KHz-1.5 MHz). Kungenxa ngale ndlela ngaphandle kokuba ukwenza ngaxeshanye imodem kunye ifowuni abangenazo kuphazamisana nabanye kwaye iphazamise. Gqiphu ezi compact kwaye kubangela iingxaki ngokungeyomfuneko. ibhokisi yesikhumbuzo lixhotyiswe ezinjengeetheminali amathathu kwaye enobunzima eliphantsi.

ADSL - ntoni na? Amanyathelo loqhakamshelwano-high speed Internet

1. Ukhetho lwe umnikezeli. Ukuze usebenzise le iteknoloji ngalo mzuzu Umboneleli ngamnye inikeza. Iintlobo ezahlukeneyo kunye namazinga zingakho kwiingingqi ezithile, kwakunye izakhono zobugcisa nkampani apho coverage isenokupheleliselwa.
2. Ukuthengwa kwezixhobo. Okwangoku, akukho mfuneko yokuthenga i modem, umzila, umzila, yokuchaka kunye microfilter. Xa senza isivumelwano odibanisa linikeza ukuthatha izixhobo eziyimfuneko nerente, kubandakanywa i-ADSL-imodem. Emva koko, xa ukupheliswa loxwebhu ibuyiswa izixhobo. Umthengi uhlawula kuphela i-Internet. Modern ADSL Internet - ntoni na? Le olukhawulezayo, cheap kunye ezikumgangatho ophezulu indlela ukudibanisa.
3. kusebenze akhawunti. Kuba akhawunti nganye zolondolozo umniki client, ubulunga apho singathatha ukuya kwiintsuku ezili-12. Nangona kunjalo, kwiimeko ezininzi, usasazo womnatha eqhelekileyo inkqubo ayidingi ngaphezu kweeyure ezimbalwa. Pre-hlola umniki inombolo yefowuni ukuya amathuba uqhagamshelwano ADSL. Ukuba obu bugcisa na indawo ukufikelela ngokwaneleyo, ngoko ukubamba i-high speed Internet akusayi kusebenza.
4. Ukubeka up izixhobo. Kweli nqanaba, uqhagamshelwano kwezixhobo ukuya yokuchaka kwilayini yefowuni kunye nebandla micro, ukufakelwa abaqhubi modem kwi computer yakho, ngokunjalo imiboniso izicwangciso womnatha le modem kwi web.

okukhona

Yeyiphi na iingenelo ADSL-technology? Nazi ezinye zazo:

• High speed zodluliselo lwedata. ADSL ikuvumela ngokulula ukuthumela iifayile nawuphi na ubukhulu ngaphandle kokulinda ixesha elide. Ithekhnoloji qho kuphuculwe, kwaye isantya okwandayo, ukwandisa kakhulu amava umrhumo.
• uqhagamshelo Wireless. Ukusebenzisa i-ADSL-nkqubo, akukho mfuneko ukwandisa intambo efowunini uze usete oluninzi lwezixhobo. Ukwanda ukuthembeka, umgangatho nokusebenza kwe-network.
• Akukho uphazamiseko kumgca yefowuni. ADSL-zendlela isebenza stand-alone mode kwaye akudali naziphi na iingxaki ifowuni. Calls kunye surf isithuba virtual kunokuba free ngokupheleleyo.
• Continuous ukufikelela Internet ADSL. Yintoni na? Oku kuthetha ukuba lo gama inethiwekhi ayiyi kunika ndoyisiwe. Ithekhnoloji akudingi kwakhona. Umsebenzisi weposi onikeza Internet rhoqo kwaye ube intanethi imini yonke nobusuku.
• Ukuthembeka kunye nozinzo. Ukuza kuthi ga ngoku, ADSL na uhlobo inokuthenjwa lonxibelelwano Internet.
• Inzuzo. Iindleko udibaniso ADSL kwaye ufake i modem kunye umzila na kancinci yaye hit imali yentsapho.

ukushiyeka

1. Akukho zokuzikhusela crosstalk. Ukuba elinye channel ziza kuqhagamshelaniswa abathengi elinesibini eziliqela bathembele ngesantya esiphezulu ayikho imfuneko. kwababhalisele abangakumbi ADSL mnye, lilikhulu umgangatho zodluliselo lwedata.
2. ezingeloncedo ADSL-technology noxa, kodwa bambalwa. Isenokuba sibandakanye isantya ubuncinane lo umrhumo. Le asymmetry of ADSL une ezimbi ezicacileyo - ukusuka rhumela ifayili iza kuba elide ubenetloni. Kodwa buchwepheshe senzelwa eyona unikezelo olukhawulezayo kwi-Intanethi ukuze bejonga. Ukongeza, iinkcukacha ezosulela bayafihlwa kumsebenzisi, ithatha indawo kancinane kwaye ifuna izixhobo.

Rate kunye nezinto ezichaphazela ngayo

ADSL i-high speed technology Internet, kodwa zentsulungeko kunye neefomula jikelele zikhona. Yababhalisi ngamnye kunye neqondo umntu omiselwe yintlaninge izinto. Kuquka ezinye kubo kuchaphazela ukuthembeka kunye nomgangatho nezixhobo. Ngoko ke, ukuba enze ukufakelwa imodem kunye imizila iingcali best.

Esona sizathu siphambili sokuba isantya eliphantsi ADSL-ephindeneyo umgangatho umgca umrhumo. Sithetha ubukho impompo kuvaleka, imeko yabo, ububanzi nobude kwicingo. Eziphango yi yoko ngqo lobude usiba komgca ubhalisele, kwaye ukunciphisa uphazamiseko ngenxa ekwandeni wire ubukhulu. Standard ubude ADSL-channel ayidluli-5 km - uluhlu kangangoko ukugqithisa data ngesantya esiphezulu.

iimpawu speed

Xa kuthelekiswa nezinye uqhagamshelo Internet, ADSL kakhulu uwina kubuchwepheshe isantya. Analog imodem unika kuma-56 kbit / s, lo gama i-ADSL ngemihla ekuqaleni bembonakalo yayo kakade ukuze udlulise ulwazi ngesantya ukuya ku 144 Kbit / s. ADSL-technology, isantya esiphezulu nto leyo nayo emiselwe iimpawu modem kwaye ukufikelela 2048 Mbit / s, ukwandisa nokudlulisela ulwazi. imigca yedijithali ukwandisa kakhulu amava yomsebenzisi, angena nayo ngaphaya kwemida, nokuba iikhompyutha ezininzi ezinxulumene, mobile phones, amacwecwe nezinye izinto.

amathuba zobuchwepheshe

Amathuba kunye nezibonelelo iteknoloji ADSL bakude ndidiniwe. Nkqu ADSL2 imigangatho ADSL2 +, kuqaliswa emva yee-2000 yee-, zisekho esebenzayo kunye namathuba. Oku, enyanisweni, ubuchwepheshe kuphela oluya kwenza ukuba kuphuculeke ukufikelela Internet ebanzi ngaphandle iingxaki kokuphazamisa kunye software, ngoko okhuphisana ezinye iindlela ezininzi ukudibanisa kwi Internet.

izixhobo Minimum sobugcisa zincediswe ziintlobo mihla of imodem. Abavelisi ngonyaka ukuvelisa izixhobo ezitsha ezilungiselelwe ngaxeshanye ngaphandle imfuneko yolondolozo inkonzo. Ngaphezu koko, isantya ADSL uhlala liyenyuka ayikho megabits ntweni. Idibanisa uba esihambelana zombini ekhaya ofisi kwinkampani lonke qhu zabaxumi computer.

isiphelo

Ngoko ke, siye safumanisa ukuba le ADSL-technology, yintoni na kubume bayo kunye siseko ukusebenza. Njengoko ubona, le yenye yezo ubugcisa ukuba phantse abupheli ngexesha lokusebenza (nokuba uqhagamshele amashumi ezininzi abasebenzisi kwi network). Kulo mzekelo, oku akuyomfuneko kwakhona rhoqo kunye umda isantya.