Forum Discussion
Solved
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 here. As far as I can tell, the device has been confi...
- 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.
We are still experiencing this issue in approximately 1 out of 10 phones in organization. We are using poly lens as our provisioning server. We have confirmed that it not a user account problem, as the same account works on another phone.
We made DHCP reservations for the Phones in question, and point the provisioning server directly to Microsoft, it works.
We made DHCP reservations for the Phones in question, and point the provisioning server directly to Microsoft, it works.
Olusteve There is a known issue which affects devices that were enrolled in Poly Lens while they were signed in to the 3PIP server. When the factory reset is initiated, the phone backs up its local configuration to Lens, and these settings get written back to the device after the reset completes. This breaks the SIP gateway configuration. Could this be impacting you?
The workaround is to delete the device from Lens, then re-enroll the factory reset device. More info in my comment on this blog post: Upgrade Skype for Business Online (3PIP) phones to Microsoft Teams using SIP Gateway - Microsoft Community Hub