Igoris

the problem has been solved by NCH.

first of all you are using old drivers, latest one seems to be 4.7.3. There is still bug waiting to be resolved. Also check format of audio file, it should be 64 Kbps, 8000 Hz, 1 channel, 0x6 = CCITT A-law coder.

there is a bug in ivm software, I tested new version, received from support and it does not skip beginning of message, but sometimes skips middle of message. It happens about once in a five calls.

I found in Axon, IVM and Carousel button called toolbox, which opens a link to components page http://www.nch.com.au/components/index.html, but there is no such component to download 'tbsetup'. Anybody knows where to find it?

Hi, I have the same problem on win xp, pentium 3 Ghz, 512 RAM. PC is running SNMP management server, but I don't believe it lacks in resources. Before I was using IVM v3.04 on older machine with win 2000 and voice modem and never found such chopping sound. Tommorow I will try to stop some services on that pc and assign high priority on IVM process, will see if it helps.

It looks like new IVM v4.0 is not a stable version, I would call it beta.

Nothing helps, even high priority for IVM process. The problem is with communication between IVM and Synway SHT-8B/PCI I believe, because VOIP calls do not give audio skips at all.