A user accesses a destination such as a call center. The call center generates a record for insertion into the user's personal address book, with a telephone number of the center and metadata concerning a transaction. To place a later call on the same matter, the user selects, either using his telephone or via a separate terminal, the address book entry and the call is made. The center receives the user's telephone number via the calling line identity (CLI) and translates this into a data address so that it can “pull” the metadata from the personal address book. Alternatively the server can translate the center's telephone number into a data address to “push” the metadata to the center.