Please note that Communicator Mobile 2007 just like Communicator Web Access 2007 is still an IM only experience (CWA does offer control over the telephony settings but isn't a voice endpoint).
I posted about the device emulator approach when I was handling the beta responsibilities for Communicator Mobile 2005 and my friend Matt who helped with that and with 2007 provided a nice little update, a stand alone emulator!
For those who do not have Smart Phones or Pocket PC devices, you can now install a standalone device emulator download from the web: http://www.microsoft.com/downloads/details.aspx?FamilyID=C62D54A5-183A-4A1E-A7E2-CC500ED1F19A&displaylang=en
This standalone version has the WM 5.0 images installed. You can then download Windows Mobile 6 SDK so you have images Mobile 6 images.
Since I still have my Windows Mobile 2003 SE device, I have not used this for my personal use yet, anyone have a recommended device from the Cingular/AT&T group (my current contract)?
note: update simply for proper category