Pathetic Call Quality

[Lookin4Help]

Hi everyone!

We (me and my colleagues) got some troubles with ViciDial.
This software is seriously needed by our company to do some "everyday" activities, so we need to fix that as soon, as possible.

Despite of the fact, that there are about 3 users in the same time, the call quality is so poor in most of calls.

We've got new PCs (with WIN7 x64 installed), and our internet connection is really fine. (DOWNLOAD 11.06 Mb/s. , UPLOAD 1.86 Mb/s, LATENCY 27 ms)
Our ViciDial server is settled in the "cloud"; We are using "Zoiper" as a call-software.
Furthermore, the other companies are using the same Cloud-Server and Voip-Operator, and it works fine.

We have tried different ways to fix that, but nothing has been changed and it sometimes gets even worse.

There are some statistics:

Channel RTT Jit Del Lost % Drop Out-Of-Order Kpkts Jit Del Lost % Drop OOO Kpkts FirstMsg LastMsg
IAX2/user06-1889 51 20 77 7198 0 8620 1161 154 0 0 0 0 0 0 0 Tx:NEW Tx:ACK
IAX2/user01-7135 41 18 79 7655 0 10870 1010 139 0 0 0 0 0 0 0 Tx:NEW Tx:ACK
IAX2/user04-10641 41 18 80 926 0 1081 176 39 0 0 0 0 0 0 0 Tx:NEW Tx:ACK

How can we solve it?

[mflorell]

Any packet loss going to that server?

What kind of cloud server are you on exactly?

[teleinx]

It's not a vici issue.
Check your ISP with a "voip quality test" between your computer and your cloud server. Then between your cloud server and your carrier. Run the test WHILE you are having an issue with a call. Running the test while there are no audio issues may not show anything.
If both turn out fine send a ticket to your carrier.
Speed and latency do not paint a whole picture your connection quality.

[Lookin4Help]

So we have to do this test immediately.

Unfortunately at the moment, we don't have any informations about "kind" of cloud server.

But can You guys tell me about the details of doing voip quality test?
I mean some kind of tutorial, maybe links, or something like that.

I'll be grateful for any informations.