The crosspoint map gives the ECS operator a visual display of all “crosspoints” or source-to-destination assignments in the matrix system. The crosspoint map is a graphical representation of all inputs and outputs in the system. This map can be used to identify talk and listen assignments, forced listens and blocked listens. It can also be used to make or cancel crosspoints and to override input and output levels set up in the map.  The grey triangles denote active crosspoints, pink half circles denote auto listen crosspoints, red crosses denote blocked listen crosspoints and green half circles denote forced listen crosspoints. The crosspoint map displays both the labels and the port numbers the labels are associated with for ease of identification.The outputs are listed down the left hand side of the table with the output gain settings, while the inputs are listed along the top of the table with the input gain settings. The map gives the ECS user options to zoom in or out, producing clearer views of the map.  Zoom can be done using Ctrl+ (zoom in) and Ctrl- (zoom out) using the keyboard or if a wheel mouse is available using Ctrl and the wheel to zoom.Clicking on the ‘Refresh All Crosspoints’ button at the top pf the crosspoint map requests the crosspoint information from the frame and uses it to update the crosspoint map.