Q: What is the reason for the fax failing? It says “No carrier detected” but I have confirmed that the fax number I’m sending the fax to is correct.
A: The 'carrier' signal is the fax tone. So, “No carrier detected” error can occur for one of two reasons:
1. No fax tone. This breaks down into no answer, a human or recording answering, etc.
2. The fax tone came, but the timing was off such that the tone was not detected.