Show navigation6 Choreographies 6.1 Introduction6.2 Communicating a MeadMessage as part of an ERN Feed6.3 Messaging Media Enrichment and Description Information Using SFTP6.3.1 Introduction6.3.2 File-by-File Delivery6.3.3 Batched Delivery6.4 Call Back-based Web Service Choreography6.4.1 Introduction6.4.2 URLs6.4.3 Personalising the Feed6.4.4 Web Service Set-up and Authentication6.4.5 Identifying Release Distributors Without Authentication6.5 Atom-based Web Service Choreography