RTS® Cronus® Intercom is a modular 32-port digital matrix intercom in 2 RU (rack units) that can hold up to four cards with eight ports each. Based upon an advanced DSP architecture, CRONUS Intercom has the ability to link up to four units into a single 128 port matrix. Through the use of standard video coaxial cable, the maximum distance between the first and last CRONUS Intercom system can be 300 ft., and still appear as a single matrix. However, when using the Fiber Option card, the distance is increased up to 15 kilometers nominally. When connected as a single matrix, the individual CRONUS Intercom controls remains autonomous and independent at each matrix for the highest reliability.