The multichannel data transmission card is designed and implemented by synchronousopticaltransmission technique.
用同步光传输技术实现了多通道数据传输卡。
2
A multi channel data transmission card has been designed and implemented using synchronousopticaltransmission technique.
采用同步光传输技术，设计和实现了用于高速数据可靠传输的多通道数据传输卡。
3
The access network and inter-exchange transport of the PSTN use synchronousopticaltransmission (SONET and SDH) technology, although some parts still use the older PDH technology.