I-PDH i-optical transceiver(I-Plesiochronous Digital Hierarchy), inkqubo ye-quasi-synchronous transmission series system. I-PDH ii-transceivers optical transceivers ezinomthamo omncinci. I-PDH i-transceivers optical transceivers isetyenziswa ngokubanzi ngababini, ebizwa ngokuba yi-point-to-point applications. Umthamo ngokubanzi yi-4E1, 8E1, 16E1.

Umsebenzi we-PDH optical transceiver: I-PDH i-transceiver optical ifanelekile kwinethiwekhi encinci yokutshintsha, inethiwekhi ye-loop yomsebenzisi, unxibelelwano lweselula (isikhululo sesiseko), inethiwekhi yangasese, inethiwekhi yeDDN, njl.

Iimpawu zePDH optical transceiver:
Yamkela i-chip enkulu edibeneyo edibeneyo, eneempawu zokusetyenziswa kwamandla aphantsi kunye nokuthembeka okuphezulu. Ukubonelela nge-E1 ekude umsebenzi wokuvavanya loopback, kulula ukuyigcina. Ibonelela ngeziteshi ze-4 E1; inomsebenzi opheleleyo we-alam, onokubonisa ii-alamu zasekhaya kunye nezikude. Ulwazi lwe-alamu (kubandakanya i-alamu yokungaphumeleli kwamandla) inokuxelwa kwintanga ngejelo lolawulo lwenethiwekhi. Ukusebenzisa i-transceiver izixhobo ezidibeneyo ze-optical, ezizinzileyo kunye nokusebenza okuthembekileyo kokusebenza. Uyilo lwebhodi enye yomatshini wonke mncinci ngobukhulu kwaye kulula ukuyisebenzisa.

Izinto ezine eziluncedo zePDH itransceiver optical:
1. Umgangatho wojongano oludityanisiweyo kunye nesantya esidibeneyo sibonelela ngamathuba onxibelelwano phakathi kwezixhobo ezivela kubavelisi abahlukeneyo.
2. Isakhono kulawulo lwenethiwekhi siphuculwe kakhulu.
3. Ngokwethiyori, kucetywa umgaqo omtsha wothungelwano lokuziphilisa. Xa isignali eyintloko yemidiya yokudlulisa inqunyulwe, iya kuphinda iqalise unxibelelwano oluqhelekileyo ngenethiwekhi yokuziphilisa. v
4. Itekhnoloji ye-Byte yokuphindaphinda yamkelwa ukwenza imiqondiso yesebe ephezulu nasezantsi kwinethiwekhi ilula kakhulu.

Ngenxa yokuba iPDH ineenzuzo eziphawulekayo ezikhankanywe ngasentla, iya kuba yenye yetekhnoloji esisiseko ukuqonda ulwazi oluphezulu. Kodwa kwiindlela zesebe kunye neendlela zefolokhwe ezidityaniswe nomgwaqo omkhulu wolwazi, izixhobo ze-PDH ze-transceiver optical ziya kuba luncedo.

I-PDH i-transceiver optical ngokuyinhloko igqiba i-E1 kunye ne-Ethernet yokufikelela kwishishini, kwaye iqonda umsebenzi wokunxibelelana kwinqanaba le-E1 kunye nomqondiso we-Ethernet ngokuphindaphinda kwi-1 yokudluliselwa kwesignali ye-optical. Thatha indawo encinci, ulungelelwaniso oluguquguqukayo, ukhuseleko lwamandla amabini.