Query: Establishing AS2 connectivity for receiving EDI docum

We need to use AS2 protocol for receiving EDI documents from the user at the following url: http://hostname:port/invoke/wm.EDIINT:receive.
We’ve created user account in TN partners’ group for the same.
our query is that:

  1. how the user will post EDI documents at this particular url?

& 2)how will the wM receive it for processing. We’ve given ACL permissions to that user (execute & read ACL)… do we need to provide other permissions or the given permissions are enough?