Fax fails on IP telephony / VoIP
G.711 fax pass-through fails, T.38 needed.
Try this first
- 1Ask VoIP provider for T.38 support
- 2MFP fax setting: lower baud (9600 or 14400)
- 3Disable ECM (Error Correction) as last resort
When to bring us in
High fax volume, use fax-to-mail gateway or dedicated fax line.
See also
- Printer suddenly not foundFor everyone at once: print server or network. For one person: local Windows driver or expired authorisation.
- Print job stuck in queue, nothing happensA stuck queue blocks all subsequent prints. Cleaning takes two minutes.
- Scanner no longer sends emails (scan-to-email)Almost always: the account the scanner uses had its password expire, or the mail provider blocks old protocols.
None of the above fits?
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