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: VDSL

 : . : 7.3.04 12:37 (: 3417)



  VDSL ec ae pae exoo ADSL, npeocxo ee o copocu. ADSL oeceae yay copoc opaooo ooa apae opee p web-paye. B opa e apae, . e. o aoea poaepy epe-ycy, copoc ooa cocae ooo 1 Mu/c. Texo VDSL oe pacoppoa eo- pyo pa c ea copoc, peay a cep, a u acep aa epea ax.
co

   apa ex pooo (pee o ce pe caap coco peaa oaoo oa) oeceae pacoppoy ooo oocooo paa yo ooce poyca. Ocaa ac acooo cepa ao ap ocaaac eaecoao o oea oe exoo ADSL. Papaoaa Alcatel exoo VDSL o oooc eo ap a opao oee co ypoe - cyapa copoc oox apae opacae o 60 M/c. py coa, , ce o ocaa Ba oocoe o, oe eep c oo exoo VDSL oca eo, peocxoee o aecy eae ypoe, coea c epe-pao , payeec, oecea oe oocoe eeoe o.

  Bo o a! Beo ypo pox co (DVD) a oe opo capo eo ape! Ka e aoe ooo? pecae cee, o e poo epeoc yae o (oope, o cy, peca coo pae aco) - a 88 a ao. pacoppo oocooo oa coyec aa ac acooo aaoa, pe cpaeo o ac cepa, oopy oo cpa c aa ao. Taoe ooee ee coxpaoc oee ca e - c ex op, a cea ep eeo oo. coa, a c cop eeo eo ocoo a, a ec ooop cooa poxoy ac o oooce cpyea - acoe o! C oo ADSL aae cooa aaypy oee poo. A e VDSL, oa epe oa oooy aaoy ADSL. Kpoe oo, VDSL oo paopaa a cepo pee (oaoe oe paa oox apaex), a acepo (eoc apae aoey oe, e apae poaepy epe-ycy), acoc o peoa pa.

  oa e aa ocaa epe, "e o" oe ycpaa cex. Teep e ooae oy oeco ox ycy - aacy oaax ye coepae peyx copoco epea ax. Tae ycy oo peocac o "ee" acoa - e ca, oope coyc epea ooca. Ce cap aaoo oe a oe ADSL, B coee cooa pye, oee coe aco (o 1,1 M), apy c , aca e ca paoa ce o ooopae "o", oopoe cocoa epea e.

  Texoo, oopa coyec pacoppo opa o pooa, aaec DMT, pe a ep opayeae oe aop coyex cpex aco (oo). aco o ocaac pae (cpe), ooo aa ao, o e oyc cae oc acao copoc paa ax. oee coe aco epeoc coocopoce ae, oca "aco oa" x py "paoy" - epeay Bax ox eeox oo. oyaec aeaea oa: oooc coocopocoo cepa a oy c eeo a oo o e eeoo .

  Teep, p a oea VDSL cooa ceo acooo cepa ex pooo, oooce caoc oe. B o pe, a exoo ADSL ooa Ba caa ae ce epe c eeo copoc oeceaa eo xopoeo aeca, VDSL ooe oya ecoo o oopeeo, apep, o eeopa oco, o - eco o (oey e?) oo, o ceac oo oe a yxe. oee oo, pecae cee, o B oeaee e poe, a aya c eyo y co aeo, o p a opeco. Boe aepy opae oc eo oo! oyae o o oye cooc, oopoe pxo, oa B oee yao yocoepc, o c Ba ce ope.

  o e acaec oco, o ec ooocoe ceac cooaecex eooepe caoc peaoc, a e a oooc oopeeoo caooo ae a eco ocoo a oa. Boopae ooy oo cpec eoe epce, oope oo peaoa, e oooc oeo yao c c axoc e-o pyo ece ec-apepa. oo ceo oo, exoo VDSL, payeec, ooe yoeop pacyy opeoc oe copoc ocya a.

  Bce epeceoe oopaae peyeca, peocaee exooe VDSL ooae Bcepo ay, o cpae c ADSL.

  Oeo, o axoeyc a pyo oe eo ap oepaopy eoxoo
cooecyee oopyoae, cocooe cpac c ocyae paa co copocoo oea. o ycpoco aaec yecopo ocya poo aoeco (DSLAM), a a oo oyae oo ax c ecox pox aoecx (DSL) oee x e oo, ocya a web-cepep ceapoa cepep o coocopocoy oecoy ooy. O o e yecop aoecoo ocya pooca oa Alcatel coyec ADSL, VDSL oeo, o ooe oepaopa oee eo peaa oa a ycy.

  o Cp, e-pee oee VDSL oa Alcatel, paoae a o exooe c 1995 . O oeae ee oy ooey ee copoy: "DMT oaec ecpeeeo oc, coae eoc ycooc oexa opee aeoo oopyoa. Taa oc ee epoceeoe aee oepaopo, eax ep VDSL, e pepa peocae cyecyx ycy. aa exoo ae e apyae paoepea e oaae aoo a ypee cce c".

  Hoa exoo ye aepecoaa oepaopo ooaee. Ka oaa ca, ooae pac copoc, oopx oo oc aoap exoo VDSL, a ae ycy, oope oa oeceae. o , ceye oooc ee oee axaa epcea, oope eep opac ooaee Bcepo ay. 

  
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