SAP's Fax and Paging/SMS interface [documentation, local cache] allows very simple access to faxing over the InterFAX email-to-fax service.
Simply configure InterFAX as a "fax provider" at domain fax.tc. Documents issued by the SAP interface will be sent as an attachment to an email address in the format FAX=+9999999999@fax.tc (consistent with RFC3192). This email is automatically received by InterFAX and forwarded to its destination.
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