Zokuxhumana wesiteshi oyiyo

isiteshi Ukuxhumana - ke kuyingxenye ebalulekile zonke uhlelo kolwazi yokudlulisela. Ngokuvamile, ngaphansi kwalesi umqondo amanga sebuningini amadivayisi zenzelwe ukunikeza isignali ukusakaza nge izakhiwo kuchazwe kusuka kwelinye iphuzu eya kwelinye.

Isiteshi zokuxhumana yakhiwa into ebalulekile, njengoba umugqa zokuxhumana, okuyiwona ukudluliswa amagagasi kagesi iqondiswe kusukela ekudluliseleni idivaysi eyamukelayo. Kusho ukuthini? Omunye isiteshi kungenzeka ngokuvamile zakha inombolo yemigqa. Ungase uthi iphuzu okuphambene. Ngokuvamile sinye siyafanana zokuxhumana line kuhlanganisa kokubili ingxenye eziningi iziteshi. Kodwa akugcini lapho. Ngaphezu imizila iziteshi zihlanganisa imishini ukuthi ogibele amaphuzu Lesisemkhatsini sekupheleni. Kuye umsebenzi kudivayisi efanayo bangayiqonda izakhi ezahlukene.

Ukwahlukanisa imigudu yokuxhumana Kwenziwa ngokuvumelana nezimfuno ehlukahlukene: ubunjalo amasignali lobuchwepheshe, uya khona uhlelo esetshenziswa imigqa, kanye neminye imingcele.

Kukhona omunye umehluko. Ishaneli yokuxhumana kungenzeka analog noma digital, futhi angakha kokubili isixhumanisi esifanayo. Ngesikhathi esifanayo asebenza ngokwehlukile. Lokhu luyasetshenziswa esebenzisa amathuba eziningana. I izinhlelo ezintsha esikhundleni iziteshi analog esisebenzayo digital. Kodwa lokhu akuyona imfuneko. In the network elide, iningi labo kanye ubude lonke, ngokuvamile i-analog, kodwa kukhona analog-to-digital. Ngakho-ke, uyokwaziswa ngophawu ngokwengxenye labetibambile njengenhlangano analog, ngokwengxenye - njengendlela digital.

Kumiswa iziteshi ezahlukene ku pair of signalers izintambo leyentiwe kusukela eko kwekhulu elidlule. Ngokusho komunye umngcele coaxial angadluliselwa 10.800 iziteshi izwi noma isignali digital kabani speed 565 megabits ngomzuzwana. Lapha futhi kufanele ukhulume umehluko oyinhloko phakathi imiqondo le. Emgqeni asikwazi ukuthi it has a-bandwidth ezithile, inqobo nje uma kuzoxoxwa yonke imininingwane ukwakhiwa yayo, ubude begodu nesakhiwo mhlahlandlela. Futhi kunjalo, uma sibheka isiteshi zokuxhumana, zonke izici ezichaziwe. Phela, nabo basuke ngokuvamile zifane futhi zichazwe ngokuningiliziwe enkulu, futhi uhlobo lutho incike lutho. Ngokwezinga elithile, zokuxhumana line kufana wesitimela nesiteshi kulokhu ufana nemoto, eye icaciswe umthamo.

Kunenye umqondo. Ezinikezelwe wokuxhumana liyisici nge ezihleliwe ukudluliswa band futhi bandwidth, okuyinto njalo uxhuma umbhangqwana ababhalisile. Subscribers amadivayisi ngabanye noma yonke amanethiwekhi angasebenza. Lolu hlobo ngokuvamile okuqashiswe izinkampani ezinkulu ungacaba owakho.

Ishaneli yokuxhumana kungenzeka analog noma digital, futhi akhethiwe kuye ngokuthi yini edinga ukuhlola zokubhalisa. Endabeni "vydelenka" inkampani igxile izinga elithile izidingo. imigqa ehlukene zisetshenziselwa ahlele iziteshi.