Patent ID: 8335495

Claim:
A system for displaying directory information on a mobile handset of a user, comprising: a carrier network for carrying telecommunication calls to and from the mobile handset; an enterprise unit coupled to the carrier network and serving an enterprise having a plurality of call destinations; a directory database storing directory information for each call destination including a respective destination identifier and a respective access rule; and a directory manager coupled to the directory database and the enterprise unit, wherein the directory manager generates a request for user data in response to a call from the mobile handset to the enterprise unit; wherein the carrier network includes a push proxy gateway for forwarding the request from the directory manager to the mobile handset; wherein the mobile handset forwards the user data to the directory manager; wherein the directory manager evaluates at least one access rule in response to the user data to select relevant directory information from the directory database; wherein the directory manager forwards the relevant directory information to the mobile handset for display via the push proxy gateway as a packet-based message; and wherein the mobile handset selects a call destination based on the displayed directory information.