Make the dough starter: Mix the flour, water, and yeast for the starter in a small mixing bowl. Beat until the batter is smooth and glossy, about 100 strokes. Let the starter sit 1 to 12 hours: Cover the starter and place it out of the way for at least 1 or up to 12 hours.
The original document is scanned with a fax machine (or a telecopier), which processes the contents (text or images) as a single fixed graphic image, converting it into a bitmap, and then transmitting it through the telephone system in the form of audio-frequency tones.
Pros and Cons. On most fax machines, you activate ECM in the advanced section of a setup menu. Once active, ECM automatically breaks down each faxed page into partial pages, which it scans to confirm data accuracy. If it spots mistakes, it stops the transmission and prompts you to resend the fax.