Terminalka shabakada indhaha (oo loo yaqaan bisad indhaha ama modem indhaha), waxa loola jeedaa gudbinta ilaa the fiber dhexdhexaad ah, habaynta signalka indhaha iyo hoos u dhigista calaamadaha borotokoolka kale ee qalabka shabakada.Qalabka Lightcat wuxuu u shaqeeyaa sidii aaladda gudbinta ee shabakadaha aagga weyn ee maxalliga ah, shabakadaha aagga magaalooyinka iyo shabakadaha aagga ballaaran.Si ka duwan transceiver indhaha, transceiver indhaha kaliya helaya oo siidayna iftiin, oo aan ku lug lahayn beddelka borotokoolka.
Modemku waa qalab elektaroonik ah oo wax ka beddela signalka dhijitaalka ah ee signalada analoogga ah ee gudbinta, oo hoos u dhigta signalka analooga ee la helay si uu u helo calaamad dhijitaal ah.Hadafkeedu waa in la dhaliyo calaamad analoog ah oo si fudud loo kala qaadi karo iyo in dib loo soo celiyo digitadii asalka ahaydWaxaan calaamad u ahay adoo dejinayaIyadoo ku xiran codsiga, MODEM-ku wuxuu isticmaali karaa habab kala duwan si uu u gudbiyo calaamadaha analoogga, sida fiber optics, raadiyaha RF, ama khadadka telefoonka.
Moodeemka taleefanka ee isticmaala band audio ee khadka taleefoonka caadiga ah ee isgaarsiinta xogta waa mmodem-yada caadiga ah ee ay la kulmaan.Ingriiska lagu hadlo, dad badan ayaa modemka taleefoonka u yaqaan "bisad" ama "sixir" oo ku salaysan shibbanaha ugu horreeya ee ku dhawaaqida Ingiriisiga.
Modemamka kale ee caadiga ah waxaa ka mid ah modem-ka fibre-ga ee marin u helka xogta broadband, ADSL modem, iyo modem fiber-ka.Taleefanka gacanta ee dhijitaalka ah runtii waa modem-ka wireless-ka.Qalabka isgaarsiinta casriga ah waxaa loogu talagalay in lagu wareejiyo macluumaad badan oo fogaan dheer oo ku saabsan warbaahinta kala duwan, sidaas darteed waxay sidoo kale ku saleysan tahay shaqada modem-ka.Moodeemka Microwave waxa lagu isticmaali karaa malaayiin bits ilbiriqsikii.Modem-ka indhaha ee isticmaalaya fiber indhaha sida dhexdhexaadinta gudbintu waxay gaari kartaa in ka badan tobanaan Gbps, hadda waa laf-dhabarta gudbinta isgaarsiineed Shabakadda indho-sarcaadka ah (Passive optical network), oo sidoo kale loo yaqaanno shabakad fiber indhaha ah, waa nooc ka mid ah isgaarsiinta fiber indhaha. Shabakadda, oo lagu garto koronto la'aan si ay u dhamaystirto farsamaynta calaamadaha, sida muraayadda guriga, uma baahna koronto si ay u muujiso sawirka, marka lagu daro qalabka terminalku wuxuu u baahan yahay inuu isticmaalo koronto, noodhadhka dhexda ayaa laga sameeyay qaybo yaryar oo fiber optic ah.
Marka loo eego fikradda Shabakadda Jiilka Cusub (NGN), shabakada isgaadhsiinta waxa loo qaybin karaa qiyaas ahaan laba qaybood: shabakada asaasiga ah iyo shabakada gelitaanka.Shabakadda xudunta u ah waxay u dhigantaa isu-gudbinta dhaqameed iyo khadadka masaafada dheer.Shabakadda gelitaanku waxay leedahay giraanta fiilooyinka fiber optic-ga.Hawlaha shabakada xudunta u ah iyo shabakada gelitaanka way kala duwan yihiin, foomamka gudbintooduna way kala duwan yihiin.Sidaa darteed, codsiyada PON waxa loo qaybin karaa laba nooc: PON of network core iyo PON of access network.Midka hore wuxuu inta badan ku saleysan yahay WDM, kan dambena wuxuu isticmaalaa weeciyeyaasha indhaha iyo qaybaha WDM labadaba.
Aqoonta kor ku xusan waa sharraxaad kooban oo ku saabsan terminaalka shabakadda indhaha oo ay keentay Shenzhen HDV Phoelectron Technology LTD., Taas oo ah soo saaraha ku takhasusay qalabka shabakada isgaarsiinta sida alaabteeda ugu weyn.Qalabkooda la xidhiidha waxa uu la xidhiidha:oltonu/ indheergaradonu/ aconu/ fiberonu/ catonu/ gpononu/ xpononu/ oltqalab/oltbeddelo/ponolt/ eponoltiyo wixii la mid ah, ku soo dhawoow isticmaalayaasha inay yimaadaan la talinta alaabta.
