Broken speech when listening to voicemails

[IPTdude]

Hi Everyone

Got a problem when listening to voicemails. When listening to voicemails, the speech is broken. Call express is being used and not unity. Theres 4 channels but only 1 channel is affected. CM version 6.1.

Any ideas of what might be affecting this? thanks

[voiceCCIE]

Is there any transcoding occurring?
Do you have QoS applied?
Try running with another NIC card.

[voiceCCIE]

I assume youmean cisco unity express.
What do you mean with 4 channels ??