This article discusses test fax numbers that can be used to test your fax lines.
You can use either of these numbers with any kind of fax machine to test if a fax line is functional.
If you send a test page to either of them, they will return a test fax back within 5 minutes.
Numbers below:
- HP fax test number: +1-888-hpfaxme (1-888-473-2963)
- Canon fax test number: +1-855-FX-CANON (1-855-392-2666)