InterFAX Developers’ Guide
The guide assumes you have access to a development environment from which you can make REST or SOAP calls, including the capability to occasionally set a request header, send one or more files as single- or multi-part content; parse the responses for HTTP headers, JSON or XML objects, as well as file content. The document attempts to be agnostic to the interface type (REST vs SOAP vs SMTP) and focus on principles of operation.