PDH optical transceiver(Plesiochronous Digital Hierarchy), quasi-synchronous digital transmission series system. PDH optical transceivers madiki-anokwanisa optical transceivers. PDH optical transceivers anowanzo shandiswa ari maviri maviri, anonziwo point-to-point applications. Kuwanda kwacho kunowanzo 4E1, 8E1, 16E1.

PDH optical transceiver basa: PDH optical transceiver inokodzera diki-capacity switch network, user loop network, mobile communication (base station), private network, DDN network, nezvimwewo.

Zvimiro zvePDH optical transceiver:
Iyo inotora yakakura-yakakura-yakasanganiswa chip, iyo ine maitiro ekushomeka kwesimba rekushandisa uye yakakwirira kuvimbika. Ipa E1 kure loopback bvunzo basa, nyore kuchengetedza. Inopa 4 E1 nzira; ine alarm yakazara basa, iyo inogona kuratidza emunharaunda uye kure maaramu. Ruzivo rwealarm (kusanganisira simba rekutadza alarm) inogona kutaurwa kune vezera kuburikidza netiweki manejimendi chiteshi. Uchishandisa transceiver yakasanganiswa optical zvishandiso, yakagadzikana uye yakavimbika kushanda kwekuita. Iyo imwe-bhodhi dhizaini yemuchina wese idiki muhukuru uye iri nyore kushandisa.

Mabhenefiti mana ePDH optical transceiver:
1. Yakabatana interface mwero uye yakabatana bit mwero inopa mukana wekubatana pakati pemidziyo kubva kune vakasiyana vagadziri.
2. Kugona mukutarisira network kwakagadziridzwa zvakanyanya.
3. Nechepfungwa, pfungwa itsva yekuzviporesa network inokurudzirwa. Kana iyo chiratidzo chikuru cheiyo midhiya yekufambisa ichigurwa, inozotangazve kutaurirana kwakajairwa kuburikidza neiyo yekuzviporesa network. v
4. Byte multiplexing tekinoroji inogamuchirwa kuti iite masaini epamusoro uye epasi ebazi mumambure nyore.

Nekuti PDH ine yakataurwa pamusoro inoshamisa mabhenefiti, inozova imwe yeakakosha matekinoroji kuona iyo data superhighway. Asi mumigwagwa yebazi uye migwagwa yeforogo yakabatana nemugwagwa mukuru wemashoko, PDH optical transceiver equipment icharamba ichibatsira.

PDH optical transceiver inonyanya kupedzisa E1 uye Ethernet bhizinesi yekuwana, uye inoziva iyo point-to-point yekutaurirana basa reE1 chiratidzo uye Ethernet chiratidzo nekuwanza kune 1 optical chiratidzo chekufambisa. Tora nzvimbo shoma, inochinjika kumisikidzwa, mbiri mbiri yekudzivirira magetsi.