Tam sim no, nrog rau kev txhim kho ntawm cov ntaub ntawv xov xwm network, peb muaj kev tshaj lij kev thov kev txawj ntse, ib qho ntawm kev sivpdh optical transceivers. Txij li thaum peb tau siv pdh optical transceivers, kis tau tus mob ntawm cov ntaub ntawv tau zoo heev ua txhaum lub shortcomings ntawm tsoos ntaub ntawv kis tau tus mob.

1. Kev qhia luv luv ntawm PDH optical transceiver khoom

PDH network optical transceiver txais kev sib koom ua ke loj loj nrog cov khoom ntiag tug ntawm cov tswv yim ywj pheej, siv lub sij hawm faib multiplexing thev naus laus zis, digital theem ntsuas phoo thiab moos rho tawm thev naus laus zis, thiab tiv thaiv kev cuam tshuam 2M interface thev naus laus zis, uas yog tshwj xeeb tshaj yog tsim rau lub sijhawm muaj kev ntseeg siab thiab ua tiav. auxiliary functions. Xws li: Tuam Tshoj txawb, Tuam Tshoj Unicom, kev sib txuas lus, hluav taws xob fais fab, kev ruaj ntseg pej xeem, tub rog, txoj kev loj, aviation thiab lwm yam kev sib txuas lus sib txuas lus. Cov khoom siv kho vajtse tau txais qhov loj-scale FPGA, uas sib xyaw ua ke encoding, decoding, cov ntaub ntawv ntxig, thiab lub tswb hloov, uas ua rau lub voj voog yooj yim thiab txhim kho kev ntseeg tau ntawm tag nrho lub tshuab.

Lub PDH optical transceiver sib tov thiab encodes E1 teeb liab thiab xa mus rau ib khub ntawm optical fibers. PDH optical transceiver network tswj kev ua haujlwm pab txhawb kev tswj hwm kev sib txuas lus los ntawm cov neeg siv kev lag luam. Los ntawm kev tswj hwm hauv nruab nrab, kev tswj hwm kev ua haujlwm xws li kev saib xyuas, teeb tsa, rov pib dua, thiab kev ua haujlwm hloov kho ntawm cov khoom siv nyob deb nroog tuaj yeem ua tiav.

2. Lub luag haujlwm tseem ceeb thiab nta ntawm PDH optical transceiver

Muab RS232 network tswj interface, txhawb kev sib koom ua ke kev tswj hwm network; (muaj feem xyuam rau cov cab kuj-qib NT-240D / 240D +) dual fais fab mov, kev sib nrig sib kub backup, (muaj feem xyuam rau cov cab kuj-qib NT-240D/240D+) muab 4 E1 chaw nres nkoj lag luam, tag nrho cov moos rov qab thiab du theem xauv tshuab xaiv AC220V , DC48V, DC + 24V, DC-24V fais fab mov kom tiav Local/peer kawg tswb xyuas, Peb-xim lub teeb qhia hais tias nws txhawb lub zos / tej thaj chaw deb E1 ceg loopback, muab ib tug official xov tooj, muab ib tug pob tshab RS232 cov ntaub ntawv channel, thiab tus nqi yog 300-19.2Kbit / s adaptive.

3. PDH optical transceiver muaj nuj nqi

a. E1 kis tau tus mob: Cov khoom tuaj yeem paub txog 4-16 E1 (2Mb / s) fiber ntau kis tau tus mob.

b.Ethernet kis tau tus mob: los ntawm kev xaiv Ethernet module, plaub raws ntawm 10M / 100M adaptive Ethernet kev pab cuam optical fiber kis tau tus mob.

c.Service function: Cov khoom tuaj yeem nruab nrog kev pabcuam hauv xov tooj kom paub txog kev lag luam kev sib txuas lus ntawm ob lub optical transceivers.

d.RS232 cov ntaub ntawv: Cov khoom muab RS232 asynchronous cov ntaub ntawv channel. Cov ntaub ntawv tus nqi yog tus kheej-adaptive hauv qab 115.2Kb / s, thiab cov ntaub ntawv hom yog nws tus kheej-adaptive.

f.Switch kom muaj nuj nqis interface: Cov khoom lag luam tuaj yeem nruab nrog lub relay tso zis hloov pauv kom muaj nuj nqis interface, uas tuaj yeem siv rau lub tswb lossis tswj.