I have had issues with this phone for the past week. At first it was working fine...then for some reason stopped working and was in the constant state of rebooting. I was able to update the phone and I can get access to the main screen. But I still get it to be recognized by my PBX system. And the phone is shows an error message of LINE UNREGISTERED. I really have no clue how to provision it. I have read the instructions, but I am not a technicial person. How can I get it to work again, in the simplest of instructions.
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The community's VoIP FAQ contains this post here:
Oct 7, 2011 Question: Can I register or is my Polycom Phone compatible with a “XYZ” SIP Server?
Resolution: Please check => here <=
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Polycom Global Services
::Check your Port Number::
I recently had similar issues while setting up used IP450's and IP550's. The reason my lines would not register was because my phones had the wrong port number.
I found this note while setting up new CHAN_SIP extensions in my SIP server. "This device uses CHAN_SIP technology listening on Port 5160 (UDP - this is a NON STANDARD port)
After entering this port number into my phone manually, (MENU<SETTINGS<ADVANCED<ADMIN SETTINGS<LINE CONFIGURATION<LINE 1<SERVER 1<PORT<EDIT) my line registered immediately.
Hope this helps someone