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My fax failed to send; what are some common issues and how to avoid them?

Sometimes your fax may not go through successfully and it fails. Here is the list of common issues to how to avoid them:

Error Message Why It Happens and How to Avoid It?
Insufficient Credit When you don’t have enough credit or you have run out of your monthly quota, you will get the “Insufficient Credit” error. Note that, depending on the destination you send fax to, one page may count as multiple pages (See rates pages for details). Add credit or subscribe to a plan and then try sending the fax again.
Destination Number Blocked
The number you were trying to send fax to is a special service number and it is not supported by our telco providers. This is rare but happens when our telco provider determines the number is high cost and/or high risk and we are prevented from sending it.
No Fax Detected
This error means that we initiated the call but couldn’t find a fax machine at your destination. To fix this error, you might need to confirm that the destination has a fax machine or ask the operator at the destination to start their fax machine prior to sending your fax.
No Answer
This error means that we initiated the call but no one (human or machine) answered the call at the other end. When you get this error, simply retry sending your fax when you know the other end will answer or have their fax machine on auto answer.
Transmission Error
As fax strongly relies on proper telecommunication connections, errors like this (Fax negotiation failed) occur when there are noises or random issue with either side of the transmission. With this said, your fax might go through if you try again.
Number Busy
If you are getting the number busy error, it means that we initiated the call but your destination was busy. You need to wait for a couple of minutes and then send your fax again. (edited)
Updated on April 21, 2018

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