Canon PIXMA MX870 - Manual (Page 43)

incoming calls are required simultaneously, thus preventing incorrect transmission.
Note
This setting may not be available depending on the country or region of purchase.
Check RX FAX information
Checks whether the dialed fax/telephone number and the sender information of recipient's fax
machine are the same. If not, stop sending faxes.
Hook key setting
Selects whether to enable or disable the Hook button on the machine to dial without picking up the
handset of the telephone when sending a fax.
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Page 43 of 1127 pages Using Various Sending Functions