Kodi chipangizo cha ONU n'chiyani?

ONU (Optical Network Unit) optical network unit, ONU imagawidwa m'magulu awiri: active optical network unit ndi passive optical network unit. Kawirikawiri, zipangizo zomwe zili ndi network monitoring kuphatikizapo optical receivers, upstream optical transmitters, ndi multiple bridge amplifiers zimatchedwa optical nodes. PON imagwiritsa ntchito single optical fiber kuti ilumikizane ndi OLT, kenako OLT imalumikizana ndi ONU. ONU imapereka ntchito monga deta, IPTV (monga interactive network television), ndi mawu (pogwiritsa ntchito IAD, mwachitsanzo Integrated Access Device), zomwe zimakwaniritsadi mapulogalamu a "triple-play".

Mawonekedwe

Sankhani kulandira deta yowulutsa yotumizidwa ndi OLT;

Yankhani malamulo oyendetsera ndi owongolera mphamvu omwe aperekedwa ndi OLT; ndikusintha mogwirizana;

Sungani deta ya Ethernet ya wogwiritsa ntchito ndikuitumiza kumtunda muwindo lotumizira lomwe laperekedwa ndi OLT;

Tsatirani mokwanira IEEE 802.3/802.3ah;

·Kulandira mphamvu yamagetsi kumakhala kokwera kwambiri mpaka -25.5dBm;

·Kutumiza mphamvu mpaka -1 mpaka +4dBm;

PON imagwiritsa ntchito ulusi umodzi wowala kuti ilumikizane ndi OLT, kenako OLT imalumikizana ndi ONU. ONU imapereka ntchito monga deta, IPTV (monga wailesi yakanema yolumikizirana), ndi mawu (pogwiritsa ntchito IAD, mwachitsanzo Integrated Access Device), zomwe zimapangitsa kuti pakhale mapulogalamu "osewera katatu";

·PON yotsika mtengo kwambiri: 10Gb/s yofanana deta yochokera pamwamba ndi pansi, mautumiki a VoIP voice ndi IP video;

· ONU "plug and play" kutengera kupeza ndi kukonza kwa automatic;

·Ntchito zapamwamba zautumiki (QoS) kutengera kubweza kwa mgwirizano wautumiki (SLA);

·Maluso oyendetsera kutali omwe amathandizidwa ndi ntchito zamphamvu komanso zolemera za OAM;

·Kulandira kuwala kochuluka komanso kugwiritsa ntchito mphamvu zochepa kwa kuwala kolowera;

· Thandizani ntchito ya mpweya woipa;

Kugawa

Kuwala kogwira ntchito

Chida chogwirira ntchito cha netiweki ya kuwala chimagwiritsidwa ntchito makamaka pamene ma netiweki atatuwa aphatikizidwa, ndipo chimaphatikiza CATV full-band RF output; VOIP audio yapamwamba kwambiri; njira yolumikizira ya magawo atatu, mwayi wopanda zingwe ndi ntchito zina, zomwe zingathandize kuti zida zolumikizirana zitatu zitheke mosavuta.

Kuwala kopanda kanthu

Passive ONU (Optical Network Unit) ndi chipangizo chogwiritsa ntchito mbali ya GEPON (Gigabit Passive Optical Network), chomwe chimagwiritsidwa ntchito kuthetsa ntchito zomwe zimatumizidwa kuchokera ku OLT (Optical Line Terminal) kudzera mu EPON (Passive Optical Network). Pogwirizana ndi OLT, ONU ikhoza kupereka ntchito zosiyanasiyana za broadband kwa ogwiritsa ntchito olumikizidwa. Monga kusakatula pa intaneti, VoIP, HDTV, VideoConference ndi ntchito zina. ONU, ngati chipangizo chogwiritsa ntchito mbali ya FTTx, ndi chipangizo cholumikizira cha bandwidth chapamwamba komanso chotsika mtengo chofunikira kuti kusintha kuchoka pa "nthawi ya chingwe chamkuwa" kupita ku "nthawi ya fiber yowoneka". Monga yankho lomaliza la mwayi wolumikizirana ndi mawaya wa ogwiritsa ntchito, GEPON ONU idzachita gawo lofunikira kwambiri pakupanga netiweki yonse ya NGN (Next Generation Network) mtsogolo.

UTStarcom ONU 1001i ndi chipangizo chotsika mtengo chomwe chimagwiritsidwa ntchito mu makina a GEPON. Chapangidwira ogwiritsa ntchito kunyumba ndi ogwiritsa ntchito SOHO, ndipo chimapereka kulumikizana kwa gigabit broadband kwa zipata za ogwiritsa ntchito ndi/kapena ma PC. ONU 1001i imapereka doko limodzi la netiweki ya 1000Base-TEthernet ya ntchito za data ndi makanema a IPTV. ONU1001i ikhoza kukonzedwa ndikuyendetsedwa kutali ndi UTStarcom BBS series optical line terminal (OLT).

ntchito

Kumtunda kwa ONU 1001i kumalumikizidwa ku ofesi yayikulu (CO) kudzera pa doko la GEPON, ndipo kumunsi kwa mtsinje ndi kwa ogwiritsa ntchito payekha kapena ogwiritsa ntchito a SOHO kuti apereke doko limodzi la netiweki la Gigabit Ethernet. Monga yankho lamtsogolo la FTTx, ONU 1001i imapereka mautumiki amphamvu, deta yothamanga kwambiri komanso makanema kudzera mu GEPON yokhala ndi ulusi umodzi.