Canon MB2300 series, Online Manual, Page: 1001 / 1155

For details on how to set, see Rejecting Fax Reception .
Check10
Are there setting items set Reject in Caller rejection ?
If you select Reject for any setting items in Caller rejection in Security control under FAX settings , the
machine rejects calls for setting item selected Reject .
For details on how to set, see Using the Caller ID Service to Reject Calls .
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 settings , 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.
Quality of Received Fax is Poor
Check1
Check the scan settings of the sender's fax machine.
Ask the sender to adjust the scan settings of the fax machine.
Check2
Is ECM RX set to OFF ?
Select ON for ECM RX in Adv. communication settings in Advanced FAX settings under FAX settings .
If ECM RX is enabled, the sender's fax machine resends the fax after correcting errors automatically.
Advanced FAX settings
Check3
Is the sender's original document or scanning area of the sender's fax
machine dirty?
The image quality of the fax is mainly determined by the sender's fax machine. Contact the sender and ask the
sender to check whether the scanning area of the fax machine is dirty.
Check4
Is ECM transmission/reception enabled although the line/connection is poor,
or is the sender's fax machine compatible with ECM?
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