Use the fax features
Chapter 11
This selects Advanced Fax Setup and then selects Backup Fax Reception.
3Press 
to select On or Off.
4Press OK.
Use error correction modeError Correction Mode (ECM) eliminates data that is lost due to poor phone lines by detecting errors that occur during transmission and automatically requesting retransmission of the erroneous portion. Phone charges are unaffected, or might even be reduced, on good phone lines. On poor phone lines, ECM increases sending time and phone charges, but sends the data much more reliably. The default setting is on. Turn ECM off only if it increases phone charges substantially, and you can accept poorer quality in exchange for reduced charges.
The following rules apply to ECM:
●If you turn ECM off, this applies only to faxes that you send. This does not apply to faxes that you receive.
●If you turn ECM off, set the Fax Speed to Medium. If the Fax Speed is set to Fast, the fax will automatically be sent with ECM on. For information on changing the Fax Speed, see Set the fax speed.
●If you send a fax in color, the fax will be sent with ECM on, regardless of the option currently set.
To change the ECM setting from the control panel
1Press Setup.
2Press 5, and then press 6.
This selects Advanced Fax Setup and then selects Error Correction Mode.
3Press 
to select Off or On.
4Press OK.
Set the fax speedYou can set the fax speed used to communicate between your HP
If you use one of the following, setting the fax speed to a slower speed might be required:
●An Internet phone service
●A PBX system
●Fax over Internet Protocol (FoIP)
●An integrated services digital network (ISDN) service
If you experience problems sending and receiving faxes, you might want to try setting the Fax Speed setting to Medium or Slow. The following table provides the available fax speed settings.
Fax speed setting | Fax speed | |
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Fast | v.34 | (33600 baud) |
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Medium | v.17 | (14400 baud) |
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Slow | v.29 | (9600 baud) |
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94 | HP Officejet 6200 series |