I can't hear the called person

Question

When I'm calling a cell phone, I frequently run into a situation where
- I don't hear a ring tone as my call goes out
- the called person then would pick up (as they told me later) and could hear me no problem. However, I could not hear the called person

What's going wrong there?

Answer 1

This sounds like a misconfiguration for your network or provider, please have a look here:

http://www.zoiper.com/en/support/answer/for/android/11/SIP_-_No_audio_or_one_way_audiort