Aya marefu-mitsara yakakosha yakakosha yekutengeserana mabhizimusi anoshandiswa
T1 uye T3 ndiwo mavara maviri akaenzana emagetsi ekutengesa dhidhiya anoshandiswa mukutengesa. Pakutanga yakagadzirwa neAAT & T muma1960 kutsigira nhare dzesefoni, mitsetse yeT1 uye mitsara yeT3 yakazoita sarudzo yakakurumbira yekutsigira bhizinesi rekushandisa internet.
T-Carrier uye E-Carrier
AT & T yakagadzira T-carrier yayo yekutendera kubvumira kuunganidzwa kwezvikamu zvakasiyana pamwe chete muzvikamu zvakakura. Mutsara weT2, somuenzaniso, unoumbwa nemitsara mina T1 yakaungana pamwechete.
Saizvozvowo, mutsetse weT3 unowanikwa nemitsetse 28 T1. Nzira yacho yakatsanangura mazinga mashanu-T1 kuburikidza neT5-sezvinoratidzwa mune tafura iri pasi apa.
| Zita | Unhu hukuru (huwandu hwehuwandu hwemashoko) | T1 zvakawanda |
|---|---|---|
| T1 | 1.544 Mbps | 1 |
| T2 | 6.312 Mbps | 4 |
| T3 | 44.736 Mbps | 28 |
| T4 | 274.176 Mbps | 168 |
| T5 | 400.352 Mbps | 250 |
Vamwe vanhu vanoshandisa izwi rokuti "DS1" kureva T1, "DS2" kureva T2, nezvimwe zvakadaro. Mhando mbiri dzezwi rinogona kushandiswa zvakasiyana-siyana munzvimbo dzakawanda. Nenzira, DSx inoreva chiratidzo chechidimbu chinomhanya pamusoro pemitambo yeTx inoenderana, iyo inogona kuva mhangura kana fiber cabling. "DS0" inoreva chiratidzo kune imwe T-carrier user channel, iyo inotsigira kuwandisa kwedhidha ye 64 Kbps . Hapana mutauro weT0 wepanyama.
Kunyange zvazvo kutengesa kweT-carrier kwakatumirwa muNorth America yose, Europe yakagamuchira imwechete yakafanana inonzi E-carrier. I-E-carrier system inotsigira pfungwa imwechete yekutsoropodza asi nemashamba emasero anonzi E0 kuburikidza neE5 uye mazita emiratidzo akasiyana pane imwe neimwe.
Leased Line Internet Service
Vamwe vanotengesa internet vanopa mitsara yeT-carrier yebhizimisi kuti inoshandise sehukama hwakatsaurirwa kune mamwe mahofisi akaparadzaniswa ega uye neIndaneti. Mabhizimisi anoshandisa mazano emakambani emakambani emakambani ekutengesa mitambo yekutengesa T1, T3 kana zvikamu zvishoma zveT3 maitiro ekushanda nokuti iyo ndiyo inonyanya kushandiswa mari.
Zvimwe Pamusoro peT1 Mitsara uye T3 Mitsara
Vatengi vemabhizimisi maduku, zvivako zvepaimba, uye mahhotela kamwechete vakavimbiswa pamiganhu yeT1 sevanonyanya kushandisa nzira yekutengesa internet kusati kwaitika bhizinesi-kirasi DSL yakava yakawanda. T1 uye T3 yakagadzirisa mitsara yakawanda-yekutengeserana mabhizimisi maitiro asingakodzeri vashandisi vekugara, kunyanya iye zvino kuti dzimwe dzakawanda dzakasarudzwa zvakanyanya dzinowanikwa kune vimba. Mutsara weT1 hauna hutano hwakakwana hwekutsigira zvakakosha zvinodiwa zvekushandisa kwemazuva ano mazuva ano.
Kunze kwekushandiswa kwemafambisi ekutengesa kwemafambisi akareba, mitero yeT3 inowanzoshandiswa pakuvaka nheyo yebhizimusi rekutengeserana panzvimbo yayo. T3 mitsara inodhura yakaenzana zvakanyanya kupfuura iyo yemiganhu yeT1. Izvozvo zvinonzi "zvikamu zvitanhatu zveT3" zvinotendera vanobhadhara kubhadhara nhamba shomanana yemigwagwa kupfuura T3 yakazara, kukonzera kubhadhara mari zvishoma.