PDH optical transceiver (Plesiochronous Digital Hierarchy, quasi-synchronous digital series) ke transceiver ea optical e nang le bokhoni bo bonyenyane, e atisang ho kopanngoa, e boetse e bitsoa lits'ebetso tsa ntlha-to-point, 'me bokhoni ka kakaretso ke 4E1, 8E1, 16E1.Ka mor'a moo, JHA TECHNOLOGY e tla hlahisa advan ...
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