A cikin tsarin sadarwar multixing na lokaci na dijital, don raba daidaitattun siginar ramin lokaci, ƙarshen aika dole ne ya samar da alamar farawa na kowane firam, kuma tsarin ganowa da samun wannan alamar a ƙarshen karɓar ana kiransa frame synchronization.Akwai nau'ikan aiki tare na firam guda biyu: Hanyar farawa-tsaya da saka hanyar ƙungiyar aiki tare ta musamman.
Hanyar fara aiki tare:Rukunin lambar kanta tana da nata bayanin haɗakarwa ta amfani da ƙa'idar ɓoyayyiyar lamba ta musamman a ƙarshen aikawa.
Saka hanyar rukunin lambar aiki tare na musamman:Yana nufin shigar da lambobin aiki tare da yawa don aiki tare da firam a cikin jerin alamar da aka watsa.
Akwai galibi nau'ikan shigarwa guda biyu na tsakiya da saka tazara.Saka tsaka-tsaki, wanda kuma aka sani da saka haɗin kai, yana buƙatar cewa firam ɗin toshe na musamman yana da kyawawan halayen haɗin kai.Ƙungiyar lambar aiki tare da firam ɗin da aka saba amfani da ita ita ce lambar Barker.Saka tazara.Hakanan an san shi da sakawa da aka rarraba, ana amfani da jeri mai sauƙi na lokaci-lokaci azaman lambar daidaitawa ta firam, kuma ana saka shi iri ɗaya cikin rafin lambar bayanai.
Dalilin da ya sa Layer link Layer ya haɗa bits zuwa cikin firam ɗin kuma yana watsa su shine cewa lokacin da kuskure ya faru, kawai firam ɗin da kurakurai za a iya sake aikawa, kuma ba lallai ba ne a sake aikawa da duk bayanan, ta hanyar inganta inganci.Ana ƙididdige ƙididdige ƙididdiga na kowane firam.Lokacin da firam ɗin ya isa wurin da aka nufa, ana sake ƙididdige adadin kuɗin, kuma idan ya bambanta da ainihin cak ɗin, za a iya gano kuskure.
Abin da ke sama shine bayanin ilimin "OSI-Data Link Layer-Frame Synchronization Function" wanda Shenzhen HDV Photoelectric Technology Co., Ltd ya kawo. Kayayyakin sadarwar da kamfanin ke samarwa:
Rukunin Module: na gani fiber modules, Ethernet modules, na gani fiber transceiver modules, na gani fiber damar kayayyaki, SSFP Optical modules, kumaSFP Optical fibers, da dai sauransu.
Kashi na ONU: EPON ONU, AC ONU, fiber optic ONU, CATV ONU, GPON ONU, XPON ONU, da dai sauransu.
Babban darajar OLT: Canji a farashin OLT, Farashin GPON OLT, Farashin EPON OLT, sadarwa OLT, da dai sauransu.
Samfuran samfurin da ke sama na iya ba da goyan baya ga yanayin cibiyar sadarwa daban-daban.Ƙwararrun R & D mai ƙwararru da ƙarfi na iya taimaka wa abokan ciniki tare da al'amurran fasaha, kuma ƙungiyar kasuwanci mai tunani da ƙwararrun za su iya taimaka wa abokan ciniki su sami ayyuka masu inganci yayin shawarwarin da suka gabata da aikin samarwa.Barka da zuwa tuntube mu ga kowane irin tambaya.
