The DS32 is a modular matrix switch contained within a 3u high 19” card-frame. Each card-frame is designed to house a maximum of 16 two channel port cards although the shelf can be sub-equipped for smaller capacity systems. Each port card in the system is identical, and as such may be programmed to be either a channel port or an operator port. The cards operate using our own DSP software code which greatly reduces the component count, thus providing a very cost effective method of providing a multi operator, multi channel control system. System flexibility is built into each switch element. In the event of a failure to any switch port card the suspected faulty card can be removed and replaced without powering down the switch. Similarly, the switch port cards are not tied to a specific slot within the switch shelf; consequently, a replacement card can be configured prior to insertion in the shelf thus reducing system downtime.