Network Connectivity - What can I do if I'm getting OUT OF RATES error when sending faxes over a gateway?
If you are getting failed outbound faxes from your mailbox on Switchvox, over a Sangoma Gateway, and in the call log details it has: Fax was attempted but failed with error code: OUT OF RATES, try the following steps to resolve the issue.
Log into Gateway
Go to Configuration > Sip Endpoints > Modify your Sip Endpoint > Fax Settings Tab
Change Fax Mode to Audio Passthrough
Then go to Media Settings Tab
Set Jitter Buffer Mode to Static
Set Jitter Buffer Delay to 20
Place outbound test fax