
I finally found the format of the directory.xml file for my Polycom 501 IP phone after searching the web for about a half hour looking for it. Where better place to keep the format than in the Polycom Admin Guide. I found an entry on voip-info.org, but it didn't mention all the XML elements I could use. So being the curious guy that I am, I had to know all the options available to me.
I'm reposting the doc page here so google can index it, and if I forget and need a reminder of what the XML elements are Google might lead me back here.