transceiver opitika PDH (Plesiochronous Digital Hierarchy, quasi-synchronous digital series) jẹ transceiver opitika agbara kekere, gbogbo awọn ohun elo so pọ, ti a tun pe ni awọn ohun elo aaye-si-ojuami, ati pe agbara naa jẹ gbogbo 4E1, 8E1, 16E1.Nigbamii ti, JHA TECHNOLOGY yoo ṣafihan advan ...
Ka siwaju