Canon 700 Series Facsimile Manual page 319

Remedy
#0021
Cause
Remedy
#0022
Cause
Remedy
#0025
Cause 1
Remedy
Cause 2
Remedy
13
13-4 Error Code Table (Listed by Number)
Wait a few minutes and try sending again. If you still cannot send the document,
contact the other party and confirm that the other fax machine has been turned
ON. If the other fax machine is busy, try sending your document at a later time.
When you send documents long distance, press [Redial/Pause] after dialing.
(See "Dialing Long Distance with Regular Dialing," on p. 3-14.)
You cannot perform polling receiving.
Make sure the subaddress/password matches the settings on the other party's
fax machine. If the other party's fax machine is a Canon fax machine and can
set a polling ID, request that the other party set their polling ID to '255' decimal
or '1111 1111' binary.
The settings for the one-touch speed dialing keys or coded speed dialing codes
you are using to dial the other party have been deleted.
Reset the one-touch or coded speed dialing settings. (See "Setting Up
One-Touch Speed Dialing," on p. 2-6, or "Setting Up Coded Speed Dialing," on p.
2-15.)
While registering the number for one-touch or coded speed dialing, you
registered the number for confidential or relay sending, but omitted the
subaddress.
Open the OPTIONAL SETTING menu for one-touch or coded speed dialing,
and make sure that you have entered a subaddress and password (if required)
for the telephone number. (See "Setting Up One-Touch Speed Dialing," on p.
2-6, or "Setting Up Coded Speed Dialing," on p. 2-15.)
After setting up relay broadcasting or confidential sending, the subaddress/
password settings for one-touch or coded speed dialing may have been
changed.
Confirm the settings for one-touch or coded speed dialing, and make sure the
subaddress/password settings have not been changed. (See "Setting Up
One-Touch Speed Dialing," on p. 2-6, or "Setting Up Coded Speed Dialing," on p.
2-15.)