Kuthamanga ndi chitetezo ndizopindula ziwiri za SONET
SONET ndi teknoloji yowonongeka yowonongeka yomwe imapangidwira kuchuluka kwa magalimoto pamtunda wautali kwambiri pa fiber optic cabling . SONET poyamba inakonzedwa ndi American National Standards Institute kwa makina a telefoni a US ku America m'ma 1980. Izi zowonjezereka kulumikizana kwazithunzi zadijito zimatumiza maulendo angapo a deta nthawi yomweyo.
Sonet Zizindikiro
SONET ali ndi zizindikiro zingapo zomwe zimapangitsa kuti zikhale zosangalatsa, monga:
- SONET imafuna zipangizo zing'onozing'ono kusiyana ndi ma protocol ena ndipo zimapereka kuwonjezeka kwa intaneti.
- SONET imatanthauzira zovomerezeka zomveka bwino pakati pa ogulitsa malonda osiyanasiyana.
- SONET ikhoza kunyamula pafupifupi iliyonse yapamwamba-protocol kuphatikizapo IP.
- SONET ikuphatikizapo kuthandizira kuti pakhale chisamaliro chothandizira kukonza ndi kukonza.
- SONET imathandiza mitundu yonse ya magalimoto kuphatikizapo mawu, deta, ndi kanema.
- SONET amapereka chitetezo chokwanira kuposa ma protocol ena.
Kuwonetsa kovomerezeka kwa SONET ndi mtengo wake wapamwamba.
SONET nthawi zambiri imagwiritsidwa ntchito kumagetsi othandizira kumbuyo. Amapezanso pamapampu ndi m'mabwalo a ndege.
Kuchita
SONET imachita mofulumira kwambiri. Pansi pazithunzi zosonyeza, STS-1, SONET imathandiza 51.84 Mbps. Mbali yotsatira ya SONET kuonetsa, STS-3, imathandizira katatu, kapena 155.52 Mbps. MaseĊµera apamwamba a SONET akusonyeza kuwonjezereka kwagwedeti muzowonjezera zowonjezera zinayi, kufika pafupifupi 40 Gbps.
Liwiro la SONET linapanga teknoloji mpikisano ndi njira zina monga Asynchronous Transfer Mode ndi Gigabit Ethernet kwa zaka zambiri. Komabe, monga miyezo ya Ethernet yapita patsogolo pazaka makumi awiri zapitazi, yakhala yowonjezeredwa m'malo mwa zokalamba za SONET.