IP Office 500v2/Windows VMPro - Dead Air on Voicemail Boxes and Modules

[zfoustodc]

We have an absolutely perplexing issue. Starting about two weeks ago - none of our Voicemail modules or mailboxes will pickup from external calls. You can see the calls connecting to the VM box through System Status, but the caller only hears dead air. Oddly enough, if I put a deskphone on DND, the voicemail box picks up and plays as expected.

We're running IP Office 10.1.8 on a 500v2 box. Our VMPro version is 10.1.8 running on a brand new Server 2019 virtual machine (I rebuilt it as a part of troubleshooting).

We've exhausted a case with our service provider, and they're as baffled as we are. As I said, I rebuilt the VMPro server and I opened all of the firewall ports, per Avaya. I also formatted the System SD card and reloaded it with fresh 10.1.8 instance. Heck, we even reset all of the IP Office security settings.

Any help is appreciated.

 

[teletechman]

We had this with both SIP and SIP enabled PRI from Windstream. They are upgrading something and it is causing issues. you have to pou nd on them to fix it. We found the same workaround that TTT said to use.
This is my original post

https://www.tek-tips.com/viewthread.cfm?qid=1809313

Mike

 

[twitchy087]

FYI to all, I've no deep specifics other than that Windstream makes adjustments to their SBC and problem solved.

 

[IPGuru]

too late for this issue now but have you also enabled Keepalives in the lan topology setting?

The default setting is off & like that it does cause some strange issues - the most obvious one is silent calls on off switch diverts but I could see it having a similar effect on VM.

Always enable it regardless - it does not do any harm if on & not required (great choice of defaults Avaya!)




Do things on the cheap & it will cost you dear