Intermittent silent/blank voicemail

[cpe90]

We are experiencing the same thing as explained in the previous thread:
https://www.3cx.com/community/threads/intermittent-silent-blank-voicemail.87594/
We have been receiving, over four times a week in our multiple sales lines, a silent voicemail for 2 minutes.

We have only been using 3CX for four months now. We never had this issue when we were in the old system for ten years.
Our provider/trunk is still the same local telco PRI. The only change in our environment is the PBX system from the old vendor to 3CX.

I want to make sure that these are not actual voicemails that could cause us to lose sales or provide excellent customer service.
Any feedback is greatly appreciated.

Thank you.

 

[Alphabetic]

Are all your voicemails silent?
If you can in from external and leave a voicemail, can you hear it?

does your firewall test pass.

 

[cpe90]

Thank you for responding.

No, not all of them.

Yes, I can call my direct line and leave a voicemail, and yes, I can call my sales line and leave a voicemail as well without having an issue listening to them all.

Yes, no issue with the firewall test.