Ukuthelekiswa kofikelelo lweFTTX olusekwe kwiPON

Indlela yangoku yokufikelela kwi-high-bandwidth yenethiwekhi isekelwe ikakhulu kwi-PON-based access FTTX. Imiba ephambili kunye nokucingelwa okubandakanyekayo kuhlalutyo lweendleko zezi zilandelayo:

● Iindleko zezixhobo zecandelo lofikelelo (kubandakanywa izixhobo ezahlukeneyo zofikelelo kunye nemigca, njl. njl., i-avareji kumsebenzisi welayini ngamnye)

● Iindleko zokwakha zobunjineli (kubandakanywa iintlawulo zokwakha kunye nezinye iindleko ze-overhead, ngokubanzi i-30% yexabiso lilonke lesixhobo)

● Iindleko zokusebenza nokugcinwa kwazo (ngokuqhelekileyo zimalunga ne-8% yeendleko zizonke ngonyaka)

●Umlinganiselo wofakelo awuqwalaselwa (oko kukuthi, umyinge wofakelo yi-100%).

● Iindleko zezixhobo ezifunekayo zibalwa ngokusekelwe kwiimodeli zabasebenzisi abangama-500

Qaphela 1: Ufikelelo lweFTTX aluqwalasele ixabiso legumbi lekhompyutha yoluntu;

Qaphela 2: I-ADSL2+ ayinayo inzuzo xa ithelekiswa ne-ADSL xa umgama wokufikelela uyi-3km. I-VDSL2 okwangoku ayisetyenziswa ngokubanzi, ngoko ke akukho luthelekiso luya kwenziwa okwangoku;

Inqaku lesi-3: Ukufikelela kwifiber ye-Optical kuneenzuzo ezicacileyo kumgama omde.

I-FTTB+LAN

Iofisi esembindini ihanjiswa ngefiber optical (3km) ukuya kudityaniswatshintshayendawo yokuhlala okanye isakhiwo, kwaye emva koko iqhagamshelwe kwipasejitshintshangefiber optical (0.95km), kwaye emva koko ihanjiswe ekupheleni komsebenzisi usebenzisa i-Category 5 cable (0.05km). Kubalwa ngokwemodeli yomsebenzisi we-500 (ngaphandle kokuqwalasela iindleko zegumbi leseli), ubuncinane enye i-24-port aggregationtshintshakunye ne-21 24-port pasejiiiswitshiziyafuneka. Ekusetyenzisweni kwangempela, inqanaba elongezelelweyo letshintshayongezwa ngokubanzi. Nangona inani lilonke leiiswitshiukwanda, ukusetyenziswa kweemodeli zamaxabiso aphantsi epasejiiiswitshikunciphisa iindleko zizonke.

I-FTTH

Cinga ngokubeka iOLTkwiofisi esembindini, i-single optical fiber (4km) ukuya kwigumbi le-cell central computer, kwigumbi le-cell central computer ngokusebenzisa i-1: 4 optical splitter (0.8km) kwi-corridor, kunye ne-1: 8 optical splitter (0.2km) ) kwiterminal yomsebenzisi wepaseji. Kubalwa ngokwemodeli yabasebenzisi abangama-500 (ngaphandle kokuqwalasela iindleko zegumbi leseli): Iindleko zeOLTizixhobo zabiwe kwisikali sabasebenzisi abangama-500, efuna i-16 iyonkeOLTamazibuko.

FTTC+EPON+LAN

Kwakhona cinga ngokubeka iOLTkwiofisi ephakathi. I-single optical fiber (4km) iya kuthunyelwa kwigumbi lekhompyutha elisembindini loluntu. Igumbi lekhompyutha elisembindini loluntu liya kudlula kwi-1:4 ye-optical splitter (0.8km) ukuya kwisakhiwo. Kwipaseji nganye, i-1:8 i-optical splitter (0.2km) iya kusetyenziswa. ) Yiya kumgangatho ngamnye, kwaye emva koko uqhagamshele kwi-terminal yomsebenzisi kunye nemigca yesi-5. NgamnyeI-ONUinoMaleko 2 wokutshintsha umsebenzi. Ukuqwalasela ukuba iI-ONUixhotyiswe nge-16 FE izibuko, oko kukuthi, ngalinyeI-ONUinokufikelela kubasebenzisi be-16, ebalwa ngokwemodeli ye-500 yomsebenzisi.

FTTC+EPON+ADSL/ADSL2+

Kwisicelo esifanayo se-DSLAM ehlayo, cinga ngokubeka iOLTkwi-ofisi ephakathi, kunye nosinga olunye (5km) ukusuka kwi-ofisi yokuphela ye-BAS ukuya kwi-ofisi yokuphela ngokubanzi, kwaye kwi-ofisi yokuphela ngokubanzi, udlula kwi-1:8 optical splitter (4km) ukuyaI-ONUkwigumbi lekhompyutha esembindini. II-ONUiqhagamshelwe ngokuthe ngqo kwi-DSLAM nge-interface ye-FE, kwaye emva koko iqhagamshelwe kwisiphelo somsebenzisi ngesibini esijijekileyo (1km) ikhebula lobhedu. Kwakhona kubalwa ngokusekelwe kwimodeli ye-500 yomsebenzisi exhunywe kwi-DSLAM nganye (ngaphandle kokuqwalasela iindleko zegumbi leseli).

Point-to-point optical Ethernet

Iofisi esembindini isasazwe ngefiber optical (4km) ukuya kudityaniswatshintshayoluntu okanye isakhiwo, kwaye emva koko isasazwe ngokuthe ngqo kwisiphelo somsebenzisi ngefiber optical (1km). Kubalwa ngokwemodeli yomsebenzisi we-500 (ngaphandle kokuqwalasela iindleko zegumbi leseli), ubuncinane i-21 24-port aggregationiiswitshiziyafuneka, kwaye iiperi ezingama-21 zeekhilomitha ezi-4 zomqolo optical fibers zondlalwe ukusuka kwigumbi lekhompyutha elisembindini ukuya kwi-aggregation.iiswitshiesiseleni. Ekubeni i-point-to-point optical Ethernet ayisetyenziswanga ngokubanzi ukufikelela kwi-broadband kwiindawo zokuhlala, ngokuqhelekileyo isetyenziselwa ukunxibelelana kwabasebenzisi ababalulekileyo abasasazekileyo. Ngoko ke, isebe lalo lokwakha lihluke kwezinye iindlela zokufikelela, ngoko ke iindlela zokubala nazo zihluke.

Ukususela kuhlalutyo olungentla, kunokubonwa ukuba ukubekwa kwe-optical splitter kuya kuba nefuthe elithe ngqo ekusebenziseni i-fiber, echaphazela neendleko zokwakha inethiwekhi; iindleko zezixhobo ze-EPON zangoku zikhawulelwe ngokugqithiswa kwemodyuli ye-optical transmit/receive kunye nemodyuli yokulawula engundoqo / Iichips kunye namaxabiso emodyuli ye-E-PON zihlala zithotywa ukuhlangabezana neemfuno zemarike; xa kuthelekiswa ne-xDSL, ixabiso lexesha elinye le-PON liphezulu, kwaye ngoku lisetyenziswa ikakhulu kwiindawo zabasebenzisi ezisanda kwakhiwa okanye zakhiwe ngokutsha. I-Ethernet ye-point-to-point optical ifaneleka kuphela kurhulumente osasazekileyo kunye nabathengi beshishini ngenxa yeendleko zayo eziphezulu. Ukusebenzisa i-FTTC+E-PON+LAN okanye i-FTTC+EPON+DSL sisisombululo esingcono sokutshintshela kancinci kancinci kwi-FTTH.