... transmission of sixteen independent video channels, eight bi-directional audio channels, eight bi-directional data channels, four E1 channels ... } )(); 1/2/4/8/16 &1-128 Channel Digital Video, Audio, Data, E1 and Ethernet Optical Transmission Verified Information This information ... broadband internet access, product design, development and after-sales service 2012/03/05 --- 2015/03/04 CE TUV AN ...