An application server, configured for executing a messaging application defined by XML documents, is able to provide messaging services to a calling party for a remote subscriber based on retrieval of subscriber attribute information obtained from a remote information database server (such as LDAP) via an Internet Protocol (IP) network. The application server, upon receiving a voice application operation request having subscriber identifier information from a browser serving the calling party, obtains from the remote information database server attribute information for responding to the voice application operation request based on the subscriber identifier information. The application server generates an HTML document having media content and control tags for personalized execution of the voice application operation based on the attribute information obtained from the standardized database server. The application server also is configured for sending and retrieving messages from a standardized remote messaging server via the IP network.