PDH Optical transceiver(Plesiochronous Digital Hierarchy), quasi-synchronous digital transmission series system. PDH optical transceivers ndi ma transceivers opangidwa ndi mphamvu yaying'ono. PDH optical transceivers nthawi zambiri amagwiritsidwa ntchito pawiri, omwe amatchedwanso point-to-point applications. Mphamvu zambiri ndi 4E1, 8E1, 16E1.

PDH optical transceiver ntchito: PDH kuwala kwa transceiver ndi koyenera kwa makina osinthika ang'onoang'ono, ogwiritsira ntchito loop network, mafoni a m'manja (base station), network yachinsinsi, DDN network, etc.

Mawonekedwe a PDH Optical transceiver:
Imatengera chip chachikulu kwambiri chophatikizika, chomwe chili ndi mawonekedwe ogwiritsira ntchito mphamvu zochepa komanso kudalirika kwambiri. Perekani E1 kutali loopback kuyesa ntchito, yosavuta kusamalira. Amapereka njira za 4 E1; ili ndi ntchito ya alamu yathunthu, yomwe imatha kuwonetsa ma alarm am'deralo ndi akutali. Chidziwitso cha ma alarm (kuphatikiza alamu yakulephera kwa mphamvu) zitha kufotokozedwa kwa anzawo kudzera panjira yoyang'anira netiweki. Kugwiritsa ntchito zida zophatikizika za transceiver, zokhazikika komanso zodalirika zogwirira ntchito. Mapangidwe a bolodi limodzi la makina onse ndi ochepa kukula kwake komanso osavuta kugwiritsa ntchito.

Ubwino anayi wa PDH Optical transceiver:
1. Muyezo wogwirizana wa mawonekedwe ndi mtengo wogwirizana umapereka mwayi wolumikizana pakati pa zida kuchokera kwa opanga osiyanasiyana.
2. Kuthekera pakuwongolera maukonde kwasinthidwa kwambiri.
3. Mwachidziwitso, lingaliro latsopano la intaneti yodzichiritsa likuperekedwa. Pamene chizindikiro chachikulu cha mauthenga opatsirana chikudulidwa, chidzayambiranso kulankhulana mwachizolowezi kudzera pa intaneti yodzichiritsa. v
4. Ukadaulo wa Byte multiplexing umatengedwa kuti upangitse ma sign a nthambi apamwamba ndi apansi pamaneti kukhala osavuta.

Chifukwa PDH ili ndi zabwino zomwe tazitchula pamwambapa, ikhala imodzi mwamaukadaulo ofunikira kuzindikira njira yayikulu kwambiri. Koma m'misewu yanthambi ndi misewu ya foloko yolumikizidwa ndi msewu wazidziwitso, zida za PDH Optical transceiver zidzakhalabe zothandiza.

PDH optical transceiver makamaka amamaliza E1 ndi Efaneti kupeza malonda, ndipo amazindikira mfundo-to-point kulankhulana ntchito ya chizindikiro E1 ndi Efaneti chizindikiro ndi multiplexing kwa 1 kuwala chizindikiro kufala. Tengani malo ochepa, masinthidwe osinthika, chitetezo chamagetsi apawiri.