Gpon yog dab tsi?

GPON (Gigabit-Capable PON) thev naus laus zis yog lub cim tshiab ntawm broadband passive optical integrated access technology raws li tus qauv ITU-TG.984.x. Nws muaj ntau yam zoo xws li high bandwidth, high efficiency, loj kev pab cuam, thiab nplua nuj neeg siv interfaces. Cov neeg ua haujlwm feem ntau suav tias nws yog ib qho cuab yeej zoo tshaj plaws kom paub txog broadband thiab kev hloov pauv ntawm kev siv cov kev pabcuam hauv network. GPON yog thawj zaug tau thov los ntawm Lub Koom Haum Saib Xyuas Kev Pabcuam Tag Nrho (FSAN) hauv lub Cuaj Hli 2002. Raws li lub hauv paus no, ITU-T ua tiav cov qauv ntawm ITU-TG.984.1 thiab G.984.2 nyob rau lub Peb Hlis 2003., Tus qauv tsim ntawm G.984.3. tau ua tiav thaum Lub Ob Hlis thiab Lub Rau Hli 2004, yog li tsim cov qauv tsev neeg ntawm GPON.

Epon yog dab tsi?

EPON (Ethernet Passive Optical Network), raws li lub npe qhia, yog Ethernet-based PON thev naus laus zis. Nws txais cov qauv point-to-multipoint, passive optical fiber kis tau tus mob, thiab muab ntau yam kev pabcuam ntawm Ethernet. EPON thev naus laus zis tau tsim los ntawm IEEE802.3 EFM pawg ua haujlwm. Thaum Lub Rau Hli 2004, pawg neeg ua haujlwm IEEE802.3EFM tau tshaj tawm EPON tus qauv - IEEE802.3ah (suav nrog rau hauv IEEE802.3-2005 tus qauv hauv 2005). Hauv cov qauv no, Ethernet thiab PON thev naus laus zis tau sib xyaw ua ke, PON thev naus laus zis yog siv hauv txheej txheej ntawm lub cev, Ethernet raws tu qauv siv rau hauv cov ntaub ntawv txuas txheej, thiab Ethernet nkag tau los ntawm kev siv PON topology. Yog li ntawd, nws muab cov txiaj ntsig zoo ntawm PON thev naus laus zis thiab Ethernet thev naus laus zis: tus nqi qis, siab bandwidth, muaj zog scalability, compatibility nrog Ethernet uas twb muaj lawm, thiab kev tswj tau yooj yim.