We have been experiencing a problem with saved voice mails. The sound gets saved out of order with gaps where the out of order sound should have been. I have uploaded a clip of an example to clyp.it https://clyp.it/ndk2xlzs (it's safe!). You can hear in the recording that where the gap is actually gets moved up in the clip. Assume points in the vm are numbered 1-5. On playback you hear you first 5 seconds almost on top of each other (then a gap where the second half of the 5 seconds was supposed to be) then resumes normal playback. It has not been reproducible as of yet. My best estimation is that it happens about 15% of the time. Here's my thoughts - don't let this get you off the track because it's just observations at this point. I don't think it's a qos or network congestion issue. I have never heard this or received reports from a live phone call. This particular email was recorded in the evening where there is virtually no traffic. When these gaps happen (from the 10's of vms I have heard) it appears that the gap occurs in the beginning of the vm. Has anyone heard this before? The 3cx server is running on hyper-v server 2012R2 with 4 virtual processors and 8GB of RAM.