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Cannot sign in to a desk phone using Teams SIP Gateway
Hi all, I'm attempting to sign in to a Polycom CCX VVX 411 desk phone I have onboarded to the Teams SIP Gateway by following the instructions https://docs.microsoft.com/en-us/microsoftteams/sip-g...
- I finally got connected with a helpful Microsoft 365 support rep and it turns out the problem was that the "SIP devices can be used for calls" setting was not enabled on the Calling policy assigned to the user.
My fault, to be sure; that being said, it would be helpful if there were some kind of error message during the web sign in process if the setting is disabled rather than being told "You have successfully signed in". May my misfortune serve as a warning to others.
I had a similar issue but did have the correct calling plan set. For me the issue was that the phone BIOS was not at the required level. Since the BIOS was a later level than shown in the update instructions for the phone I had to guess at the exact level. After a few tries it updated.
Phones do NOT have BIOS, it is FIRMWARE