No it doesn't hang up, the sound cuts(hash, chop) and makes it incomprehensive.
We're trying to do an app to use VoIP from a device to a smartphone, so when talking from the smartphone to the device it works perfectly but when talking from the device to the smartphone thats when the sound chops.
Following thread has codec recommendation and other methods to ensure quality (post#2)
I hope, it would help you either fix the problem or get pointers towards the cause of sound chops.
Ok tested with another sip server and there's no more white noises any suggestion why?
And there's still a small delay is there any configs we can play with to allocate more priority/bandwidth?