If you use a Web services description language (WSDL) to develop applications that integrate with the Telecom Web Services Server, the WSDL must meet certain requirements.
All communication between your application and the Access Gateway is done using SOAP/HTTPS. This provides maximum interoperability between the endpoints, because literal encoding has the widest platform support and interoperability characteristics. Communication between the Access Gateway and the back-end service implementation uses SOAP over the most appropriate transport. Both HTTP and secure HTTPS transports can be used for delivering the SOAP message.