Multiplexers SDH: inkcazelo, isikhundla

Digital multiplexers kuhlanganiswa izixhobo ubhalo ezakhelwe yokudluliswa ezilawulwa ulwazi kwimithombo data ezininzi ijelo imveliso owodwa. Enyanisweni, isixhobo hlobo iiswitshi ezininzi digital ngokokuma. Ngako oko, kunokwenziwa isigqibo ukuba kukho multiplexer yedijithali ke imiqondiso ukuzitshintshela igalelo kumgca kwimveliso olulodwa. Eli nqaku liza kuthathelwa ingqalelo uhlobo olwahlukileyo izixhobo - multiplexers optical SDH.

izixhobo ezinjalo luyilwe ukusebenza nokuqukuqela data esebenzisa imiqadi ukukhanya, ezahluke kwisigaba okanye awo uthango, kunye neembono. multiplexers SDH udlulise ulwazi imiphantsi E1 kunye nemigca Ethernet ukuthutha uthungelwano fibre-optic. Basebenza ngomhla elinye okanye amabini enombala kwimicu (single-imo okanye multimode) kwi-155, 520 Mbit / s kwi ngamaza 1550/1310 NM. multiplexers SDH ungaziphumeza iingongoma ukuya ku 126 qha.

Izinto eziluncedo ze zixhobo ezo ziquka ukomelela, ukhuseleko zobugcisa, ukhuseleko ngokuchasene kusiko lweenkcukacha zesini.

SDH-multiplexers zibe lula lokukala kuquka unit main ukuya kwiindlela ezintathu ezongezelelweyo transmission Ethernet iminqongo E1, intercom, kwaye umsele PM.

Ezi zixhobo luphawulwa aphezulu 'inyameko "network. Implementation E1 inexabiso eliphantsi jitter yabonwa ngabantu lo mlinganiselo E1 ngexesha kungqamaniso yokhukuliseko, kunye nokungaphumeleli STM-1 inkqubo ixesha. parameters Interface ukuvumela ukuba esweni impazamo ijelo lonxibelelwano , enze utshintshe nje ukuya kwijelo enye. indlela Optical namandla ukufotokopa eli-1 + 1. Oko kukuthi, xa usebenza kwi ifayibha optic channel, xa kukho umonakalo ye intambo, unxibelelwano phakathi izikhokhelo igcinwe.

multiplexers SDH edibene lula kunye nezinye iintlobo izixhobo SDH. Ukuba unako ukusebenza ngeendlela yolunye kwaye olungenangqamaniso zivunyelwe multimode nabangatshatanga-mode nefayibha. SDH multiplexer ixhasa uqwalaselo ekude kunye nolawulo lwe TCP / IP, 10/100 BaseT protocol.

Ezinjalo izixhobo ziguquka ukuba yahlulwe iintlobo ezimbini: yesiphelo kwaye / O. Umahluko phakathi kwezi ntlobo asiyiyo inxalenye kumazibuko, kunye nokubekwa kwefowuni kwinethiwekhi SDH. multiplexer yesiphelo uyawugqiba aggregate imijelo beya phakathi kwabo inani elikhulu lamajelo output nee-input. Uhlobo lwesibini kwezixhobo zokuhamba adlulisele umgca aggregate kumgca elifumileyo isikhundla eliphakathi. Ngaloo ndlela ulwazi amajelo uviko evela umlambo aggregate okanye zifakwa kuyo.

abavelisi abaninzi ukuvelisa jikelele uhlobo multiplexers SDH, ezithi zisetyenziswe terminal igalelo / imveliso, kwakunye cross-izihlanganisi - ngokuxhomekeke kwiimodyuli ezifakwe ngokomyinge kunye namazibuko ngabafakwa uviko.

Xa ndiqukumbela, sidibanisa ukuba multiplexers ifayibha optic, ngokuya kuthandwa ngakumbi nangakumbi ngenxa yokuba uphuhliso olumandla olu hlobo lonxibelelwano. lwetheknoloji fibre optic le kwixesha elizayo.