Call Failed with no error code

[Stephanie05]

Hi. I am a Zoom Phone admin for a business and a few users (6) on our system cannot make outgoing calls. They receive a Call Failed pop up with no error code. When you try and call them it goes right to voicemail. This has been going on since last Friday and users have had to resort to work calls being forwarded to their personal cell phones. Not good! 

[FORE-Craig]

Hi Stephanie,

Did it work for these users prior to last Friday? Which platform are they using?

Craig

[ChrisO]

Have you verified the users have a calling plan assigned to them?

[Stephanie05]

Yes, calling plans are assigned

[MikeMc]

Hi All. Any ideas on this?

 @Stephanie05 are your users SSO to log in? I'm having the same issue with one of my users. We've tried everything. Appears to work on another machine but I can't confirm because the machine is remote but calls can be made and received. 

Just trying to determine similarities. 

[COL]

Hi All,

We have the same issue.

We are using SSO and polycom devices.

It works when we do the following:

- Restart the device (More... > Settings > General > Reboot)

- Sign in as guest on the device

- Remove user from Phone System Management and re-add user

Did you find any global fix?

[rjlynch]

Following this thread - we are having the same issue with our system as well. We are using O365 SSO and a mix of Cisco devices. The error has occurred on the Cisco desk phones and the mobile and desktop variants of the Zoom client.

[COL]

Hello,

We got the following information form the support:

The issue will be fixed in ZPA 5.13.6  set for 16th Jan 2023 release.

@Eliot I confirm that we are using polycom CCX700 phones with firmware 7.3.2.0312

Thank you for your help.