If you subscribe to a Caller ID service, the printer detects the sender's Caller ID. If the sender's ID matches the condition specified in this setting, the printer rejects the phone call or fax reception from the sender.
Contact your telephone company to confirm whether it provides this service.
Specify the setting following the procedure below.
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Make sure the printer is powered on.
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Select 
Setup on the HOME screen.
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Select 
Printer settings.
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Select Fax settings.
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Select Security control.
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Select Caller rejection.
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Select Yes.
The Caller rejection conditions screen is displayed.
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Select a setting item and select Accept or Reject.
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Anonymous no.
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Selects whether to reject a phone call or fax reception from an anonymous number.
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Out of area no.
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Selects whether to reject a phone call or fax reception out of the subscribed service area.
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Rejected numbers
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Selects whether to reject a phone call or fax reception from the specified numbers.
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Select OK to finish specifying rejection conditions.
If you select Reject for Rejected numbers, Add blocked numbers? is displayed on the touch screen. Select Yes, and then register the rejected number.
Even if you select Reject, the printer rings once.
If your product issue was not resolved after following the steps above, or if you require additional help, please create or log in to your Canon Account to see your technical support options.
Or if you still need help, visit our Canon Community by clicking the button below to get answers:
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