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

I-ofisi esembindini ihanjiswa ngefiber optical (3km) ukuya kwi-aggregation switch yendawo yokuhlala okanye yesakhiwo, kwaye emva koko iqhagamshelwe kwi-corridor switch ngefiber optical (0.95km), kwaye emva koko ihanjiswe ekupheleni komsebenzisi usebenzisa i-Category 5 cable (0.05) km).Kubalwa ngokwemodeli ye-500 yomsebenzisi (ngaphandle kokuqwalasela iindleko zegumbi leseli), ubuncinane enye i-24-port aggregation switch kunye ne-21 24-port corridor switches iyadingeka.Ekusetyenzisweni kwangempela, inqanaba elongezelelweyo lokutshintsha ngokubanzi longezwa.Nangona inani elipheleleyo lokutshintsha linyuka, ukusetyenziswa kweemodeli zexabiso eliphantsi lokutshintsha kwe-corridor kunciphisa iindleko ezipheleleyo.

FTTH

Cinga ngokubeka i-OLT kwi-ofisi ephakathi, i-fiber optical fiber eyodwa (4km) ukuya kwigumbi le-cell central computer, kwigumbi le-cell central computer ngokusebenzisa i-1: 4 optical splitter (0.8km) ukuya kwi-corridor, kunye ne-1: 8 optical. isiqhekeza (0.2km) kwitheminali yomsebenzisi wepaseji.Kubalwa ngokwemodeli yabasebenzisi be-500 (ngaphandle kokuqwalasela iindleko zegumbi leseli): Iindleko zezixhobo ze-OLT zabiwe kwisikali sabasebenzisi be-500, efuna i-16 izibuko ze-OLT.

FTTC+EPON+LAN

Kwakhona cinga ngokubeka i-OLT kwi-ofisi 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.I-ONU nganye inoMaleko wesi-2 wokutshintsha umsebenzi.Ukuqwalasela ukuba i-ONU ixhotyiswe nge-16 FE izibuko, oko kukuthi, i-ONU nganye inokufikelela kubasebenzisi be-16, abalwa ngokwemodeli ye-500 yomsebenzisi.

FTTC+EPON+ADSL/ADSL2+

Kwisicelo esifanayo se-DSLAM ezantsi, cinga ngokubeka i-OLT kwiofisi ephakathi, kunye ne-fiber enye (5km) ukusuka kwi-BAS ekupheleni kwe-ofisi ukuya kwi-ofisi yokuphela ngokubanzi, kwaye kwi-ofisi yokuphela jikelele, idlula i-1: 8 optical. splitter (4km) ukuya kwi-ONU kwiziko leseli kwigumbi lekhompyutha.I-ONU ixhunywe ngokuthe ngqo kwi-DSLAM nge-interface ye-FE, kwaye emva koko ixhunywe ekupheleni komsebenzisi kunye ne-twisted pair (1km) ikhebula lobhedu.Kwakhona kubalwa ngokusekelwe kwimodeli ye-500 yomsebenzisi exhunywe kwi-DSLAM nganye (ngaphandle kokuqwalasela iindleko zegumbi leseli).

Point-to-point optical Ethernet

I-ofisi esembindini isasazwa ngefiber optical (4km) ukuya kwi-aggregation switch yoluntu okanye yesakhiwo, kwaye emva koko ibekwe ngokuthe ngqo kwisiphelo somsebenzisi ngefiber optical (1km).Kubalwa ngokwemodeli yomsebenzisi we-500 (ngaphandle kokuqwalasela iindleko zegumbi leseli), ubuncinane i-21 24-port aggregation switches iyadingeka, kunye ne-21 pairs of 4 kilometers of backbone optical fibers zibekwe ukusuka kwigumbi lekhompyutha ye-ofisi ephakathi ukuya kwi-aggregation. iiswitshi kwiseli.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.