Hello Michel,
The buddies worked for me a long time ago. Some day it stopped working, but since the majority of my phones have productivity license I never bothered to check why it happened.
I suggest a TCPDUMP to see whether the Polycom subscribes to the watched extensions.
__Yehavi:
2011/4/21 Michel Py
<michel@arneill-py.sacramento.ca.us>
> Michael Collins
> You can't do 3.3.1 on the 501 and 601 phones - they are oldies.
> Polycom has "legacy" firmware for those old phones and you're
> stuck w/ what they give you, which is indeed 3.1.7.
Indeed :-(
Nevertheless, according to the wiki, I should be able to do the attendant thing.