Where/how does Mobile Outlook store a Nextel Push-To-Talk number?
 

I am attempting to incorporate Windows Moble 5 (Smartphone) devices into our
infrastructure. We currently use Nextel as our carrier. The phones each have
unique IDs for the Push-To-Talk functionality - three groups of numbers
delimited by asterisks (NNN*NN*NNNN). The Nextel handsets running Windows
Mobile seem to have a predefined field for storing these numbers along with
the more basic Contact information, and then incorporate that into Exchange.
I cannot, however, seem to identify the name of the field under which the PTT
numbers are stored. Does anyone have any familiarity with this?