Drosm\u012bgs eksperiments: 12 modemi kop\u0101 sniedz iespaid\u012bgu (pag\u0101ju\u0161\u0101 gadsimta) \u0101trumu<\/p>\n
Vai esat k\u0101dreiz dom\u0101ju\u0161i, vai m\u016bsdien\u0101s ir iesp\u0113jams skat\u012bties YouTube, izmantojot l\u0113no, bet atcer\u0113to 56K modemu? Kan\u0101la “The Serial Port” entuziasti veica drosm\u012bgu eksperimentu un pier\u0101d\u012bja, ka patie\u0161\u0101m \u2013 ar attiec\u012bgiem ierobe\u017eojumiem. \u0160is izaicin\u0101jums rad\u012bja saj\u016btu, it k\u0101 atgrie\u017eoties 90. gadu beig\u0101s, kad interneta \u0101trums bija sal\u012bdzino\u0161i zems, bet tehnolo\u0123isk\u0101s amb\u012bcijas \u2013 \u013coti augstas.<\/p>\n
Eksperiment\u0113t\u0101ji izmantoja savu iespaid\u012bgo komplektu: datorus ar Windows XP, VoIP ier\u012bci, vair\u0101kas PCI papla\u0161in\u0101juma kartes ar seri\u0101lajiem portiem un, pats galvenais, 12 da\u017e\u0101dus 56K modemus. Tas viss tika savienots, izmantojot inovat\u012bvo Multilink PPP (MPPP) tehnolo\u0123iju. Rezult\u0101ts? Sasniegts “apbr\u012bnojams” \u0101trums \u2013 668,8 kbit\/s! Tas ir nepieredz\u0113ti augsts r\u0101d\u012bt\u0101js laik\u0101, kad v\u0113l nebija pla\u0161i izplat\u012bts platjoslas internets, ISDN vai ADSL.<\/p>\n
Multilink PPP: Aizmirst\u0101 tehnolo\u0123ija pag\u0101tnes pa\u0101trin\u0101jumam<\/p>\n
Multilink PPP bija interesants risin\u0101jums, lai palielin\u0101tu datu p\u0101rraides \u0101trumu, apvienojot vair\u0101ku modemu jaudu vien\u0101 savienojum\u0101. Sal\u012bdzinot to ar m\u016bsdien\u0101m, tas b\u016btu k\u0101 vair\u0101ku \u0161auru ce\u013cu savieno\u0161ana, lai izveidotu vienu platu automa\u0123istr\u0101li. Diem\u017e\u0113l \u0161\u012b tehnolo\u0123ija neguva pla\u0161u popularit\u0101ti galvenok\u0101rt d\u0113\u013c nepiecie\u0161am\u012bbas izmantot vair\u0101kas t\u0101lru\u0146a l\u012bnijas un ierobe\u017eojumiem, ko noteica interneta pakalpojumu sniedz\u0113ji. “The Serial Port” komandai gan izdev\u0101s atrast m\u016bsdienu pakalpojumu sniedz\u0113ju, kur\u0161 joproj\u0101m atbalsta nepiecie\u0161amos modemus un pat Cisco VoIP v\u0101rteju, lai veiktu \u0161o unik\u0101lo izm\u0113\u0123in\u0101jumu.<\/p>\n
Eksperti apr\u0113\u0137in\u0101ja, ka pat minim\u0101lam, bet skat\u0101mam video straum\u0113\u0161anas saturam pietiktu ar \u010detriem 56K modeniem, nodro\u0161inot aptuveni 240p iz\u0161\u0137irtsp\u0113ju (apm\u0113ram 200 kbit\/s). Lai gan m\u016bsdienu standartiem tas \u0161\u0137iet smiekl\u012bgi zems, 90. gados tas b\u016btu bijis liels sasniegums.<\/p>\n
Ce\u013c\u0161 uz rekordu: No Windows ME l\u012bdz 12 modemu sinhroniz\u0101cijai<\/p>\n
Eksperiments s\u0101k\u0101s ar nedaudz vec\u0101ku aparat\u016bru \u2013 IBM datoru no 2001. gada ar Windows ME, kas sp\u0113ja vienlaic\u012bgi darbin\u0101t divus modemus. Tom\u0113r t\u0101l\u0101k\u0101 m\u0113rogo\u0161ana tika kav\u0113ta draiveru konfliktu d\u0113\u013c, mekl\u0113jot risin\u0101jumu pla\u0161\u0101kai seri\u0101lo portu atbalsta kartei. Galu gal\u0101 vi\u0146i piev\u0113rs\u0101s nedaudz jaun\u0101kai iek\u0101rtai \u2013 IBM Think Center no 2004. gada ar Windows XP, cerot uz lab\u0101ku aparat\u016bras un programmat\u016bras sader\u012bbu.<\/p>\n
S\u0101kum\u0101 tika izmantotas divas identiskas seri\u0101l\u0101 porta papla\u0161in\u0101juma kartes, ta\u010du to vienlaic\u012bga darb\u012bba izr\u0101d\u012bj\u0101s problem\u0101tiska COM portu adre\u0161u p\u0101rkl\u0101\u0161an\u0101s d\u0113\u013c. Tika pie\u0146emts iz\u0161\u0137ir\u0161an\u0101s aizst\u0101t vienu no kart\u0113m ar citas markas ier\u012bci. Tas \u013c\u0101va pieejamos portus palielin\u0101t l\u012bdz pat 13 (ieskaitot vienu m\u0101tesplat\u0113). At\u0161\u0137ir\u012bb\u0101 no Windows ME, kur katrs modems tika savienots sec\u012bgi, XP sp\u0113ja tos aktiviz\u0113t vienlaic\u012bgi, radot \u012bstu “modemu kori” ar rakstur\u012bgo ska\u0146u.<\/p>\n
P\u0113c r\u016bp\u012bgas manipul\u0101cijas ar DIP sl\u0113d\u017eiem modemos, t\u0101lru\u0146a l\u012bnij\u0101m un seri\u0101lo portu iestat\u012bjumiem Windows XP, komandai izdev\u0101s veiksm\u012bgi palielin\u0101t modemu skaitu no 2 l\u012bdz 12. Testa rezult\u0101ti, kas apliecin\u0101ja 668,8 kbit\/s \u0101trumu, par\u0101d\u012bja, ka sist\u0113ma sp\u0113j nodro\u0161in\u0101t YouTube video straum\u0113\u0161anu. Lai gan s\u0101kum\u0101 bija neliela aizkave, ko rad\u012bja datora zem\u0101 jauda un buferiz\u0101cija, galu gal\u0101 video tika atska\u0146ots bez p\u0101rtraukumiem.<\/p>\n
Potenci\u0101lais pasaules rekords un neizsme\u013cam\u0101s iesp\u0113jas<\/p>\n
Eksperiment\u0113t\u0101ji nor\u0101da, ka vi\u0146i nav atradu\u0161i nek\u0101dus pier\u0101d\u012bjumus par MPPP savienojumiem, kas b\u016btu izmantoju\u0161i vair\u0101k nek\u0101 \u010detrus modemus. Tas liek dom\u0101t, ka sasniegtais 12 modemu savienojums var\u0113tu b\u016bt jauns pasaules rekords. Video nosl\u0113gum\u0101 tiek dots m\u0101jienu, ka patiesais Multilink PPP savienojumu potenci\u0101ls v\u0113l nav piln\u012bb\u0101 atkl\u0101ts, atst\u0101jot intrigu par iesp\u0113jamiem turpm\u0101kiem uzlabojumiem.<\/p>\n","protected":false},"excerpt":{"rendered":"Drosm\u012bgs eksperiments: 12 modemi kop\u0101 sniedz iespaid\u012bgu (pag\u0101ju\u0161\u0101 gadsimta) \u0101trumu Vai esat k\u0101dreiz dom\u0101ju\u0161i, vai m\u016bsdien\u0101s ir iesp\u0113jams…\n","protected":false},"author":2,"featured_media":8212,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[3380,77,76,3382,35,39,38,36,37,34,40,3381,3383,3384],"class_list":{"0":"post-8211","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-bizness","8":"tag-56k-modems","9":"tag-bizness","10":"tag-business","11":"tag-interneta-atrums","12":"tag-latvia","13":"tag-latvian","14":"tag-latviesu","15":"tag-latviesu-valoda","16":"tag-latviesuvaloda","17":"tag-latvija","18":"tag-lv","19":"tag-multilink-ppp","20":"tag-pagajusa-gadsimta-tehnologijas","21":"tag-youtube-straumesana"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/posts\/8211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/comments?post=8211"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/posts\/8211\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/media\/8212"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/media?parent=8211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/categories?post=8211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/lv\/wp-json\/wp\/v2\/tags?post=8211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}