I don't know of any applications specifically that leverage the Google API; however, there are 3rd-party products that allow custom user directory population on a user by user basis and, in some cases, users can "share" a directory that others can access from their phone or a web page via a "pin" or some other mechanism (varies by app). If I read your original post correctly, you were looking more for Personal Address Book type functionality vs. Corporate Directory (i.e., sync with LDAP)...correct? For reference, take a look at an application called IP Phone Services (IPPS) made by 2Ring. From there, I'm sure you'll be able to get a feel for what is provided by some of the bigger names like Berbee, IPcelerate, and so forth.
Hailey
Please rate helpful posts!
