Multiplexers SDH: description, naqshada

multiplexers Digital lagu daro qalab macquul ah in waxaa loogu talagalay gudbinta gacanta macluumaadka laga helay ilo xog badan hal channel wax soo saarka ah. Dhab ahaantii, qalab noocan oo kale ah waa daaro mawqifyada digital badan. Iyadoo la raacayo, waxaa lagu soo gabagabeeyey karaa in multiplexer a digital waa calaamadaha talooyin ku biiray line a soo saarka hal. Maqaalkani waxa loo tixgalin doonaa nooc oo kala duwan oo ah qalab - multiplexers indhaha SDH.

aaladaha noocan oo kale ah waxaa loogu talagalay in la socodka xogta by yahay alwaax iftiin, kaas oo ku kala duwan yihiin wajiga ama Ilodanimada inayan shaqeeyaan shabaggeedii iyo Milanello. multiplexers SDH gudbiyaan warbixin ku saabsan channels E1 iyo khadadka Ethernet gaadiidka shabakadaha fiber-optic. Waxay ka shaqeeyaan on hal ama laba indhaha fiiloyin (-hal hab ama multimode) ee 155, 520 Mbit / s at Milanello ah 1550/1310 nm. multiplexers SDH garasho kartaa ilaa 126 dhibcood ee xiriir.

Faa'iidooyinka qalabka sida ka mid ah adkeysiga, amaanka farsamo, ilaalinta jabsiga macluumaadka la isugu gudbiyo.

SDH-multiplexers yihiin si fudud scalable in ka mid ah qaybta ugu muhiimsan ilaa saddex channels gudbinta Ethernet dheeraad ah modules E1, xiriir, iyo channel ee PM.

Qalabka Kuwan waxaa lagu gartaa "adkeysiga" sare network. Hirgelinta E1 uu qiimo jitter hooseeyo arkay by caadiga ah, waayo, E1 inta lagu guda jiro miyigii .Wadashaqayntaas, iyo guuldareystaan stm-1 nidaamka waqtiga. beegyada uu interface u ogolaan in ay la socdaan qalad in channel isgaadhsiinta , oo wuxuu oofin Beddelashada in channel ka beddelka. Jidka indhaha iyo xoog loo hayaa 1 + 1. Taasi waa, marka shaqeeya on optic channel fiber a, ee ay dhacdo dhaawac ee cable ka, xidhiidhka ka dhexeeya macaamiisha waxaa loo kaydiyaa.

multiplexers SDH si fudud lagu daro noocyada kale ee qalabka SDH. Waxay ku shaqeeyaan karaa qaabab synchronous iyo asynchronous waxaa loo ogol yahay in multimode iyo hal hab fiber. multiplexer SDH taageertaa qaabeynta fog iyo maaraynta TCP / IP, 10/100 BaseT maamuuska.

qalabka bedesheen noocan oo kale ah waxaa badanaa loo kala qaybiyaa laba nooc: terminal iyo I / O. Farqiga u dhexeeya nooc aanay ahayn qayb ka mid ah dekedaha, iyo meelaynta qalab ee network SDH ah. multiplexer Terminal dhameystiraya wadar ahaan channels jeebkayga iyaga ka mid ah tiro badan oo ah channels saarka iyo talooyin. Nooca labaad oo ah alaabta transit gudbiya line wadar ahaan on line ee degan meel dhexe. Sayidka channels ka addoon warbixin ka soo jeeda webigu ku soo baxday wadar ahaan ama isku duro u galay.

saarayaasha intooda badan soo saari universal nooca multiplexers SDH, kuwaasi oo loo isticmaalo sida terminal aqbasho / wax soo saarka, iyo sidoo kale cross-xirayaasha - iyadoo ku xiran modules rakibay ay wadar ahaan labada lug iyo dekedaha addoon.

Gebogebadii, waxaan ku dari in multiplexers fiber optic, waxaa lagu helo caan badan oo ay sabab u tahay horumarka degdeg ah ee noocan ah ee isgaarsiinta. for technology fiber optic mustaqbalka.