search for: t30_set_supported_modems

...9;re using asterisk 1.2.7 we had to modify app_rxfax.c to work). - We've created a custom dialplan application to disable the echo cancellation on the isdn channel on which the fax is received. - We've tried various settings for t30_set_supported_compressions, t30_set_supported_image_sizes, t30_set_supported_modems and t30_set_supported_resolutions (I must confes that I didn't really know which settings to use here, but we have tried a lot of them). - We've tried several fax machines to send the faxes, ranging from simple fax-modems to large dedicated fax machines. But still a lot of faxes give prob...