HP LaserJet Enterprise Flow MFP M525 - User Guide

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If errors and retries persist, set the fax speed to Slow (V.29) because some VoIP systems cannot handle the
higher signal rates associated with fax.
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In rare cases, if errors persist, turn o ECM on the product. The image quality might decrease. Ensure that
the image quality is acceptable with ECM o before using this setting.
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If the preceding setting changes have not improved the VoIP fax reliability, contact your VoIP provider for
help.
Problems with receiving faxes
Problem Cause Solution
Incoming fax calls are not being answered
by the fax accessory (no fax detected).
The rings-to-answer setting might not be
set correctly.
Check the rings-to-answer setting.
The fax cable might not be connected
correctly, or the fax cable is not working.
Check the installation. Make sure you are
using the fax cable that came with the
product or with the fax accessory.
The phone line might not be working. Disconnect the fax accessory from the
phone jack, and then connect a phone. Try
to make a phone call to ensure the phone
line is working.
If you are using a PBX system, the ring
signals might not be congured correctly.
Check the ring-signal conguration on the
PBX system.
A voice-messaging service might be
interfering with incoming faxes.
Do one of the following:
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Use a phone line dedicated to fax calls.
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Decrease the rings-to-answer for the
fax accessory to a number less than
the rings-to-answer for the voice mail.
Faxes are being received very slowly. You might be receiving a complex fax, such
as one with many graphics.
Complex faxes take longer to transmit.
The sending fax machine might have a slow
modem speed.
The fax accessory only receives the fax at
the fastest modem speed the sending fax
machine can use. Wait for the fax
transmission to complete.
The resolution at which the fax was sent or
is being received is very high. A higher
resolution typically results in better quality,
but also requires a longer transmission
time.
Ask the sender to decrease the resolution
and resend the fax.
If there is a poor phone-line connection, the
fax accessory and the sending fax machine
slow down the transmission to adjust for
errors.
Ask the sender to resend the fax. Ask the
phone company to check the phone line.
Faxes are not printing on the product. No paper is in the input tray. Load paper. Any faxes received while the
input tray is empty are stored and will print
after the tray has paper.
The Fax Printing Schedule feature is in use. Faxes print according to the schedule. To
print faxes immediately, disable the Fax
Printing Schedule feature.
ENWW Solve fax problems 285