Xerox DocuColor 2240 Service Manual page 577

84-721 I-Line Off Error
During communication, the line I was turned Off.
Procedure
Switch power off then on. Re-try the Fax job.
Status Indicator RAPs
84-721, 84-722
84-722 Disconnected Call
Calling was disconnected during detection of the flag from the destination terminal.
Procedure
Switch power off then on. Re-try the Fax job.
09/03
2-544
Initial issue
DC 3535/2240/1632, WC M24