Changing the silence-detect mode
This setting controls whether or not you can receive faxes from older-model fax machines
that do not emit a fax signal during fax transmissions. At the time of this publication, these
silent-model fax machines represented very few of the fax machines in use. The default
setting is Off. The silence-detect mode setting should be changed only if you regularly
receive faxes from someone who uses an older-model fax machine.