SYSTEM FOR CONTACT SUBSCRIPTION INVITATIONS IN A CROSS-DOMAIN CONVERGED ADDRESS BOOK SYSTEM

摘要

A system and method provides subscription invitations for an address book service. The system receives contact subscription invitation requests from originating clients. Contact data from the contact subscription invitation request is extracted. A session initiation protocol (SIP) message based on the extracted contact data is generated. The SIP message includes a user resource identifier (URI) to some or all of the originating client's Personal Contact Card (PCC). A SIP message is then transmitted to remote address book server.