I have an application which generates files automatically and faxes them, and I am trying to improve its speed.
When I send these files through an application called Classic PhoneTools, the duration is 35-40 seconds. The speed is 14,400 bps, and because I choose the option normal quality (not high quality) Classic PhoneTools says the transmission Mode is Normal.
When I send the same files through my application, the duration is always 50-60 seconds. The speed is 14,400 bps, but the transmission Mode is always HQ (High Quality) even if I am not choosing this.
I tried generating all kinds of jpg, pdf and bmp files, large and small, in color, grayscale or black/white, with larger or smaller resolutions, and the speed only improves when I am shrinking the data so that it gets displayed on half of the page or less. I think Classic Phone Tools obtains the same effect by somehow compressing the data obtained from the file before faxing it.
What type of file, with what characteristics, should I generate in order to obtain the optimum faxing speed? Code samples in C# would be excellent.