A method and system of facilitating service delivery to a first user (A) registered with a home network (home PLMN) for a particular service having an associated announcement accessible to a service subsystem (4,9) of the home network in a communications system while the user is roaming in a visited network (visited PLMN) of the communications system. The user is identified for the home network and a connection is initiated from the first user (A) to a second user (B) registered any network of the communications system. The initiated connection is routed to the service subsystem (9) of the home network, the service subsystem (9) of the home network delivers the announcement to the first user, and the service subsystem (9) of the home network establishes a connection between the first and second user (A and B).