Canon PIXMA MX492 User Manual - Page 638

Machine Does Not Switch Automatically between Voice and Fax Calls Check Is the receive mode set to Fax only mode? If Fax only mode is selected for Receive mode set. under FAX menu, there will be no automatic switching between voice and fax calls. Set the receive mode to TEL priority mode, DRPD*1, or Network switch*2. If the receive mode is TEL priority mode and an answering machine is connected to the machine, check whether a proper message is played back when the answering machine answers. Setting the Receive Mode *1 This setting is available only in the US and Canada. *2 This setting may not be available depending on the country or region of purchase. 638