DLS Technology yonse imakhala yopanda malire kapena Symmetric
DSL (Digital Subscriber Line) ntchito yothamanga kwambiri pa intaneti kwa nyumba ndi malonda amalimbana m'madera ambiri a dziko ndi chingwe ndi zina za ma webusaiti apakompyuta ambiri. DSL imapereka mauthenga a broadband pogwiritsa ntchito mzere wa foni yamkuwa. Mitundu yambiri ya ntchito ya DSL ndi yopanda malire. Mitundu yonse ya chipangizo cha intaneti cha DSL chikhoza kugawidwa ngati choyimira kapena chosakanikirana. Utumiki umene umakuyenderani bwino umadalira ngati mumachita masewera ambiri kapena mumafuna kuthandizidwa pazolumikizidwe zamamvekedwe ndi mavidiyo nthawi imodzi.
DSL yopanda malire
Mitundu yosakanikirana ya kugwirizanitsa kwa DSL imapereka mauthenga ambirimbiri othandizira kuti azitha kuwongolera kuchokera kwa intaneti pa makina a olembetsa kusiyana ndi kuyika zina. Mwa kuchepetsa kuchuluka kwa bandwidth komwe kumapezeka kumtunda, opereka chithandizo amatha kupereka zowonjezera zamtunduwu kumtunda, zomwe zikuwonetsa zosowa za olembetsa.
Mafilimu a DSL osakwanira ndi malo otchuka a DSL kumene anthu ogwiritsa ntchito intaneti amagwiritsira ntchito pang'onopang'ono.
Mitundu yodziwika ya DSL yophatikizapo ndi izi:
- ADSL (Olemba Magazi a Digital Asymmetrical) ali ndi kupitirira pansi kwa 8 Mbps ndi mlingo wokwera wa 384 Kbps. Zimathandizira kutumiza telefoni ndi deta nthawi yomweyo.
- ADSL 2+ ndiyatsopano ya ADSL yomwe imapereka maulendo opitirira 20 Mbps ndi kupitiliza maulendo a 850 Kbps.
- ADSL Lite kapena G.Lite ndiyomwe ya ADSL yomwe imapereka mofulumira kwambiri kufika 1 Mbps pansi pawindo ndi 512 Kbps kupititsa liwiro.
- R-ADSL (Werenganinso-Adaptive Rate Digital Subscriber Line) amapereka miyeso yofanana ya ADSL, koma liwiro lotha kuyendetsa lingasinthidwe ndi modem.
- VDSL (Wophunzira Wachiwerengero Wamtengo Wapatali kwambiri) ndi ntchito yothamanga kwambiri ya DSL. Amapereka malire otsika mpaka 52 Mbps ndi kumtunda kwa 2,3 Mbps pa waya umodzi wamkuwa.
Symmetric DSL
Mitundu yamakono ya kugwirizanitsa kwa DSL imapereka njira zofanana zogwiritsira ntchito komanso zojambulidwa. Mafilimu a DSL amavomereza amadziwika ndi mautumiki apamwamba a DSL monga makampani nthawi zambiri omwe ali ndi zofunikira zowonjezera deta. Iwenso ndi teknoloji ya kusankha kwa mauthenga a phokoso ndi mavidiyo panthaŵi yomweyo, omwe amafunika kufulumira kwambiri m'mawonekedwe onsewa kuti azitha kuyankhulana bwino.
Mafomu a DSL ofanana ndi awa:
- SDSL (Symmetric Digital Subscriber Line) imapereka miyeso yofanana yopita kumtunda ndi kumunsi kwa 1.54 Mbps.
- SHDSL (Symmetrical High-Speed Digital Subscriber Line) ndi teknoloji yomweyo monga SDSL, koma miyezo iwiriyo inavomerezedwa mosiyana. SHDSL inavomerezedwa ndi International Telecommunications Union, ndipo SDSL inavomerezedwa ndi European Telecommunications Standards Institute.
- HSDL ( Wophunzira Wowonjezerapo Wachiwerengero Wamakono ) unapangidwa kumayambiriro kwa zaka za m'ma 1990, ndikupanga imodzi mwa mitundu yakale kwambiri ya DSL. HDSL inapereka chiwerengero cha deta kufika 2.048 Mbps koma inkafuna mizere yambiri ya foni, yomwe pamapeto pake inachititsa kuti isagwiritsidwe ntchito.
Mitundu Yina ya DSL
IDSL (ISDN Digital Subscriber Line) ndi luso la hybrid DSL / ISDN . Zinapangidwa pamodzi ndi mitundu ina ya DSL koma sikugwiritsidwa ntchito masiku ano chifukwa cha kuthamanga kochepa (144 Kbps kuposa mlingo wa data) imathandizira. IDSL imapereka nthawi zonse kugwirizana, mosiyana ndi ISDN.