u2033 of communication windows 5 could be provided in a simple manner via the electrically conductive transparent coating 3 fig3 depicts an alternative embodiment according to the invention of the communication window according to fig2 to reduce the thermal loading of the contacting lines 7 in the region of the electrically conductive coating 3 the heating conductors 8 were electrically connected in each case via a node point 6 and a plurality of contacting lines 7 to the electrically conductive transparent coating 3 fig4 depicts another comb like embodiment according to the invention the heating conductors 8 were connected in parallel in a current collection strip 6 in the communication window a current collection strip 6 was applied as a node point directly on the glass pane 2 and had no direct contact with the electrically conductive transparent coating 3 contacting lines 7 with a distance between them of 5 mm produced the electrical connection with the electrically conductive transparent coating 3 the flow densities in the contacting lines 7 were less than in the heating conductors 8 the thermal loading of the contacting lines 7 was minimized in the contact region with the electrically conductive transparent coating 3 fig5 depicts another alternative embodiment of the invention the contacting lines 7 covered the electrically conductive transparent coating 3 over a length of 10 mm and were configured in the shape of a triangle the longest edge of the enlargement ran parallel to the equipotential lines of the electrically conductive transparent coating 3 through the enlargement of the contacting lines 7 the flow densities were reduced and in particular the contact regions with the electrically conductive transparent coating 3 were thermally.