Forum Discussion
Calls from Polycom VVX phones to call queue dropped after 30 seconds when picked up by Teams client
- Hello Ryan,
Please get a case opened at Poly support. I'm from the escalations team and currently working this issue with our development team. I have reproduced it internally and provided all the info for code analysis.
As a side note, Poly and Microsoft recommend the usage of the latest maintenance release built on top of a qualified release, at the time of this post, 5.9.3. Maintenance releases are automatically qualified.
Thank you
walter-wodzien I've got a call open with Polycom support now, hopefully they will find a solution.
Ryan Steele Any luck? I have a customer that calls drop but only with their VVX311's, all other models are fine. Your issue with Teams and VVX phones sounds similar. Seems that all the 5.9.x firmwares fail, but "some" are stable on 5.8... hard to narrow down Teams/VVX support stability.
- Polycom support believes the issue is on Microsoft’s side. The Office 365 support tech has involved the backend team. Now just waiting for an update.
Silence from Office 365 support so far.
Ryan Steele Any chance that the sites you're experiencing the issue with are using Palo Alto firewalls? We narrowed the issue down to the firewall as the same phone off their network works perfectly fine. Narrowing down the NAT to a 1-to-1 also resolved, but not tenable for hundreds of phones, so something is up with the pool of IP's being used for proxying to the internet. The client has engaged with the Palo to find a resolution.
Renewing the mantra, "Its the network"...