DT/DR-2V(W)2A4C/2A4C, card is designed specifically to work seamlessly with the Aiphone AX intercom system on one multi-mode or single-mode optical fiber. This module supports two Aiphone AX intercom systems on one multi-mode or single-mode fiber. The module features 2 channels of 8 or 10-bit, high resolution video, 2 channels of 24-bit audio and 4 channels of bi-directional contact closures. These contact closure channels can be individually configured as either normally open (NO) or normally closed (NC). The DT/DR-2V(W)2A4C/2A4C-x accepts PAL, SECAM, or NTSC formats. The functionality of DT/DR-2V(W)2A4C/2A4C-x product are further enhanced by their compatibility with Meridian’s PC based SpectraSmart, network management and remote diagnostic software system. SpectraSmart supervises the operating parameters of the transmission system such as status on video levels, sync, carrier detect, voltage, temperature, optical levels, data activity etc. DT/DR-2V(W)2A4C/2A4C-x product is available as rack mount cards and modules that can be installed in any of Meridian’s desk chassis or in 19-inch racking frames. This system can be configured in either star (module to rack) or trunking (rack to rack) configurations. These systems can be made a standalone system by using the SR-1000, 2 slot desk/wall mount chassis (87 to 264Vac).