Add a ResendFax(sFaxDetailsID) method that allows to resend an outbound fax (previously failed or not).
Otherwise, when a failure occurs, QueueFax needs to be called again thus upload the files to send.
ForwardFax(sFaxDetailsID, toFaxNumber) should also be implemented.
We have this is the queue as well. Once gain we will inform you when implemented.
We have implemented a "Forward_Fax" API call https://www.srfax.com/api-page/forward_fax/ which can be used for both forwarding a fax by FaxDetailsID or re-sending a fax.