PDH optique(Plesiochronous Digital Hierarchy), sisitemu yohererezanya amakuru ya sisitemu. PDH optique ihinduranya ni ubushobozi buke bwa optique. PDH optique ihinduranya ikoreshwa muburyo bubiri, nanone bita point-to-point progaramu. Ubushobozi muri rusange ni 4E1, 8E1, 16E1.

Imikorere ya PDH optique ya transceiver: PDH optique ya transsiver ikwiranye numuyoboro muto uhindura imiyoboro, imiyoboro yumukoresha, itumanaho rya mobile (sitasiyo fatizo), umuyoboro wigenga, umuyoboro wa DDN, nibindi.

Ibiranga PDH optique transceiver:
Ifata super nini-nini ihuriweho na chip, ifite ibiranga gukoresha ingufu nke kandi byizewe cyane. Tanga E1 ya kure yo kugerageza imikorere, byoroshye kubungabunga. Itanga imiyoboro 4 E1; ifite ibikorwa byuzuye byo gutabaza, bishobora kwerekana ibimenyesha hafi na kure. Amakuru yo kumenyesha (harimo nimbaraga zo kunanirwa) arashobora kumenyeshwa urungano binyuze mumiyoboro yo gucunga imiyoboro. Ukoresheje transceiver ihuza ibikoresho bya optique, imikorere ihamye kandi yizewe. Igishushanyo mbonera kimwe cyimashini yose ni nto mubunini kandi byoroshye gukoresha.

Ibyiza bine bya PDH optique transceiver:
1.Ibice bihuriweho hamwe nigipimo cya biti ihuriweho bitanga amahirwe yo guhuza ibikoresho biva mubakora inganda zitandukanye.
2. Ubushobozi mu micungire y'urusobe bwaratejwe imbere cyane.
3. Mubyukuri, igitekerezo gishya cyumuyoboro wo kwikiza urasabwa. Iyo ikimenyetso nyamukuru cyibitangazamakuru byoherejwe gihagaritswe, bizahita bisubukura itumanaho risanzwe binyuze mumurongo wo kwikiza. v
4. Byte multiplexing tekinoroji ikoreshwa kugirango ibimenyetso byishami byo hejuru no hepfo murusobe byoroshye.

Kuberako PDH ifite ibyiza byavuzwe haruguru byavuzwe haruguru, bizahinduka bumwe muburyo bwibanze bwo kumenya amakuru superhighway. Ariko kumihanda yishami hamwe ninzira nyabagendwa ihujwe namakuru yamakuru, ibikoresho bya PDH optique ya transceiver bizakomeza kuba ingirakamaro.

PDH optique transceiver irangiza cyane cyane E1 na Ethernet yinjira mubucuruzi, kandi ikamenya imikorere-itumanaho-point-point-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya-ya. Koresha umwanya muto, iboneza ryoroshye, kurinda amashanyarazi abiri.