Im just looking for a basic walkthrough on the most basic functions of the phones for some end users. ie. how to transfer a call, how to park a call, how to check voicemail etc. I do not want a long involved and complicated user guide that details every single function. If I could find one specifically for the Polycom VVX 310, that would be great also. Everything I find on the website is overly detailed for simple, basic phone instruction and use for an end user.