No sound (usb camera with microphone attached to pc with deskcamera)

We have usb camera with microphone attached to pc with deskcamera.
We have stream but there is no sound.

Most probably your camera produce codec like "pcmu" and this is why you don't hear any sound. Nimble Transcoder https://wmspanel.com/transcoder can convert audio to aac/mp3.
If you cannot sort it please contact us via https://wmspanel.com/help

In outgoing section it shows stream have audio (pcm_mulaw format). Is it cause of no sound?
pcmu = pcm_mulaw?
Are there ip cameras with microphone compatible to stream video and audio through Nimble Stream?

Nimble streamer supports pcm codecs but this codec not supported in hls/dash/rtmp protocols so you cannot hear pcm sound if you try to play your stream using these protocols. You can use Nimble transcoder to convert sound to aac as I previously proposed. That way your stream will play fine. You camera is compatible but produced codec itself not compatible with almost all protocols except rtsp.

Im already using Nimble transcoder https://ru.wmspanel.com/transcoder/install#os_windows
I can give login and password from my wmspanel. There stream with sound, but when Im testing it with "Play this stream on WMSPanel stream testing page" there is no sound.

It's time to contact us privately via https://wmspanel.com/help then as I don't see any active transcoder license for your account.

DeskCamera supports AAC audio now

www.deskcamera.com/news/deskcamera-4-0/