Use Fax over VoIP networks
VoIP technology converts information from analog to digital. The data are formed into packets and
transmitted over the packet network, where packets may be routed in different ways. Therefore, when
they are re-assembled there may be delays, errors introduced into single packets, packets arriving out
of order and so on. This makes it a bit more difficult to get the analog signal re-assembled in a timely
fashion.
The following are suggested changes in settings for the HP LaserJet Analog Fax Accessory
500 when it is connected to a VoIP service:
●
Begin with the fax speed set in Fast (V.34) mode and with Error Correction Mode (ECM) turned
on. The V.34 protocol handles any changes in transmission speed needed to accommodate VoIP
networks.
●
If numerous errors or retries occur with the fax speed set to Fast, set it to Medium (V.17).
●
If errors and retries persist, set the fax speed to Slow (V.29) because some VoIP systems have
timing issues with fast mode transmissions.
●
In rare cases, if errors persist, turn off ECM on the product. The image quality might decrease.
Ensure that the image quality is acceptable with ECM off before using this setting.
●
If the preceding setting changes have not improved the VoIP fax reliability, contact your VoIP
provider for help.
ENWW
Solve fax problems
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