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HP Customer Support - Knowledge Base

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  • Information
    Apache Log4j Update

    Please see this document here for current information regarding the Apache Log4j vulnerability.

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    Need Windows 11 help?

    Check documents and videos on compatibility, FAQs, upgrade information and available fixes. Windows 11 Support Center

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HP LaserJet Pro MFP - Use fax on a VoIP service

Voice over internet protocol (VoIP) services are often not compatible with fax machines unless the provider explicitly states that it supports fax over IP services.

If the printer experiences problems getting a fax to work on a VoIP network, verify that all cables and settings are correct. Decreasing the fax-speed setting might allow the printer to send a fax over a VoIP network.

If the VoIP provider offers a "Pass through" mode for the connection, that will offer better fax performance on VoIP. Also if the provider has "comfort noise" added to the line, fax performance can be enhanced if this feature is not enabled.

If faxing problems continue, contact the VoIP provider.


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Country/Region: Hong Kong SAR

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