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HP VoIP Fax Settings

How to Fax over VoIP with HP Fax Machines.

Hewlett Packard or HP Fax machines are some of the most widely used fax machines in the world, so it will be no surprise that thousands of users everyday are seeing faxes sent with their HP fax machines fail when trying to use them over a VoIP Internet line.   VoIP Mechanic has put together the settings that will most likely give you the best chance of success faxing over a VoIP connection for HP machines.  Unfortunately, not every HP fax machine has easy to find settings to make their machines more compatible with VoIP, so we have placed instructions on some of these HP machines here.  By slowing down the Baud rate, or transmission speed to a setting of 9600 and disabling ECM (Error Correction Mode) your success rate will increase significantly. 

How to Disable ECM on most HP Fax machines:

lady_stand_101708These settings should work closely for many HP fax machines, but some newer and some older machines may not have these settings.  The only way to know for sure is to check your particular model.  You may find that you are able to disable ECM (Error Correction Mode) (why this setting is important), which is a setting that will help transmissions over VoIP.  If you happen to discover slight differences, you should look to locate the ECM setting in the Advanced Features Setup menu on most HP fax and All in One machines.


For most HP 7000 model Officejets.

For most HP 2000, 4100, 5000, 6000 & 6100 model Officejets.

How to Disable ECM HP Officejet 7300/7400 series all-in-one

** Pease Note:  Turning off ECM on these models by completing the above settings only applies to outbound faxes.  If the speed of the Fax is not adjusted to Slow or Medium and the fax is left at the default fast speed, it will automatically send the fax with ECM on regardless of the above settings.  For lowering the BAUD rate on HP Officejet 7300/7400.

How to Disable ECM on the HP 3180/3100 series fax machines.

** Note: Disabling ECM on the HP 3100 series machines will automatically reduce the Baud speed to 14,400 (v.17).

How to reduce the Baud rate to 9600 on the HP 3180/3100 series fax.

How to reduce the Baud rate on the HP M2727 MFP series fax.


Lowering the Baud rate on an HP4110

You can set the Baud rate by following these steps:

VoIP and faxing over VoIP are critical home business needs.

How to lower the Baud rate on HP Officejet 9100 All-in-One Series

*Note:  The following values represent the corresponding Baud rates: 0 = V.17 14400;  2 = V.17 9600;  6 = V.29 9600;  10 = V.27 2400.

More VoIP settings on HP All-In-One Printer/Faxes.