LG VX-8600 / AX-8600

I just got a TomTom GPS for Xmas and I'm having trouble with one of the features. You can use your GPS as a speaker phone, and you're supposed to be able to export your phone's directory to the GPS, but when I try doing it I get the message on the GPS that it can't connect to my phone directory.

Does anyone know how to fix this?

Or is that one of those features that VZW turns off?

TIA