It's an .asmx extension which is .NET's Web service interface. So pretty sure this is a SOAP Web service not a REST service.

+++ Rick ---

>Are you sure it is a web-service? It looks a bit like some REST-communication where you wizld call a login to get a
>token (session-id) which you would use for following calls. A lot of companies call their http-based communication "web-service" despite the fact that it is not one.
>
>Best regads
>
>Thomas