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New Member

Unity - Garbled Voicemail

We have several locations that experience garbled voicemail when the greeting plays and when leaving or listening to the message. Is this due to voice packet loss, low bandwidth or QoS config? Had data group check these things and nothing obvious stands out. Does anyone have any thoughts on what may be causing this?


Re: Unity - Garbled Voicemail

Check the speed and duplex settings of the Unity server NIC and the switch port to which it is connected. Unless these are gigabit, they should be hard coded to 100/Full as opposed to letting them auto negotiate. Take a look at the following link for some additional troubleshooting steps for this type of problem.

Hope this helps. If so, please rate the post.


New Member

Re: Unity - Garbled Voicemail

It may be your QoS configuration.

Simulate load between the remote site and your voicemail server when you can create predictable load and gradually remove the load to see if the call quality improves.

New Member

Re: Unity - Garbled Voicemail

Check how much Jitter do you have on the network. Unity does not do very well with a high jitter.

How are the locations connected? Are they point to point or some type of vpn?

Super Bronze

Re: Unity - Garbled Voicemail


Sounds like narrowing down the problem might help:

1) Does it happen on all remote sites?

2) On the site that the Unity server is installed does it happen?

If it happens on the local LAN something fundamental (like duplex setting as mentioned above) seems likely... Otherwise your WAN QoS may be the problem.



Please rate helpful posts...

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!