Zvose DLS Technology Inosvika Asymmetric kana Symmetric
DSL (Digital Subscriber Line) yepamusoro-purogiramu yebasa rekutengesa kumisha uye mabhizinesi anokwikwidza munzvimbo dzakawanda dzenyika nekambani nemamwe marudzi emafambisi e-internet webbandaneti. DSL inoshandisa network broadband uchishandisa mhangura yepuraneti. Mhando dzakawanda dzeDSL service hazvina kukwana. Mhando dzose dze DSL internet service dzinogona kugoverwa semasikirati kana sendimi. Basa rakakunakira iwe rinoenderana nokuti iwe unoita zvakawanda zvekushambadzira here kana kuti unoda rubatsiro rwemashoko pamwe chete nemavhidhiyo ekukurukurirana.
Asymmetric DSL
Asymmetric marudzi eDLL ekubatanidza anowedzera huwandu hwemagetsi ekudzivirira kubva kune internet yepainternet provider kune kombiyuta yekunyoresa pane kuisa mune imwe nzira. Nokuderedza kuwanda kwebhanwidth inowanikwa nechepamusoro, vatapi venyika vanogona kupa zviyero zvakawanda zvepakati pemvura, izvo zvinoratidza zvinodiwa zvekunyorera.
Asymmetric DSL teknolojia inoshandiswa pakugara DSL yese inoshandiswa nevashandisi vepaimba yepamusha kunotsika pasi.
Maitiro anowanikwa eDML asingatendi anosanganisira zvinotevera:
- ADSL (Asymmetrical Digital Subscriber Line) ine ruzivo rwakarereka kusvika kusvika 8 Mbps uye imwe yepamusoro ye 384 Kbps. Inotsigira kutengesa foni nekufambisa kwedata panguva imwe chete.
- ADSL 2+ ishanduro itsva ye ADSL iyo inobvumira kukurumidza kukurumidza kusvika 20 Mbps uye kutumira kasi ye 850 Kbps.
- ADSL Lite kana G.Lite ishanduro ye ADSL inopa kukurumidza kukurumidza kusvika 1 Mbps pasi pedziriri uye 512 Kbps kupinza kasi.
- R-ADSL (Rate-Adaptive Digital Subscriber Line) inopa mafiro akafanana ekutengesa sa ADSL, asi kukurumidza kutengesa kunogona kuchinjwa ne modem.
- VDSL (Very High Bit-Rate Digital Subscriber Line) ndiyo yeDLL inoshanya zvikuru. Inopa mitero yakadzika yepamusoro kusvika ku 52 Mbps uye kumucheto kwemitengo inosvikira 2.3 Mbps pamusoro peyero imwe yendarira.
Symmetric DSL
Symmetric marudzi eDLL ekubatanidza anopa bandwidth yakaenzana yezvose zviri kudiwa uye zvidzidzo. Symmetric DSL teknolojia inozivikanwa nebhizimisi-kirasi DSL maitiro semakambani anowanzova nezvido zvakanyanya zvekutsvaga data. Izvo zvakare inyanzvi yekodhi yekusarudzwa kwemashoko pamwe chete uye mavhidhiyo ekukurukurirana, izvo zvinodikanwa nekukurumidza kumativi ose mairi nenzira yekukurukurirana kunobudirira.
Mafomu ekuenzanisa DSL anosanganisira:
- SDSL (Symmetric Digital Subscriber Line) inopa zvakaenzana kumucheto nekudzika kwekufambisa kunomira kusvika 1.54 Mbps.
- SHDSL (Symmetrical High-Speed Digital Mumiririririri Line) ndiyo teknolojia imwe chete seSADSL, asi mitemo miviri yakabvumirwa zvakasiyana. SHDSL yakagamuchirwa ne International Telecommunications Union, uye SDSL yakagamuchirwa ne European Telecommunications Standards Institute.
- HSDL (High Bit-Rate Digital Subscriber Line) yakagadzirwa kumavambo ekuma1990, zvichiita kuti ive imwe yemhando dzekare kudarika DSL. HDSL yakapa dhidha kusvika ku 2.048 Mbps asi yaida mitsara yakawanda yefoni, iyo yakazoita kuti irege kushanda.
Dzimwe Mhando dzeDSL
IDSL (ISDN Digital Subscriber Line) ishanduro yeHSL / ISDN ye hybrid. Yakagadzirwa pamwe nemamwe marudzi eDLL asi haisati yashandiswa mazuva ano nekuda kwekurumidza kuderera (144 Kbps yakanyanya kudhinda data) inotsigira. IDSL inopa nguva dzose pakubatana, kusiyana neIndaneti.