1. Check your fax scenario and your problem phenomenon.
- Inbound fax or outbound fax?
- Fax to Fax machine or Fax to Email?
- How is your device connection with Fax machine and PBX/Gateways?
Refer to the Typical Fax Scenario Connection we support.
2. Check your fax settings according to your scenario.
- S-Series
https://support.yeastar.com/hc/en-us/articles/227039028-How-to-Send-Fax-to-Email
- U-Series
https://support.yeastar.com/hc/en-us/articles/216826548-How-to-Receive-and-Send-Fax-in-MyPBX
https://support.yeastar.com/hc/en-us/articles/217046778-How-to-Configure-Fax-to-Email
3. Refer to the common causes and cases:
- Fax detection:
Fax to Email Failure - Caused by the Improper TX Volume
Fax Receiving Failure on TA100 when Registered to U100 - Improper Fax Detection Settings on U100
- Codec:
T.38 Outbound Fax Failure - The Provider doesn't Fully Support T.38 Fax
- Compatibility:
Outbound Fax Failure - Caused by the Codec Negotiation Failure
4. Log Capture
If the above 3 steps could not help fix your issue, try to capture and post us the logs with the problem description in Step 1.
The logs we need: Fax Issue Log Caputre
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