During MOC, calling party (let say A party) get silent and doesn’t hear anything even the dialing tone, but the called B party can hear very well A party voice call.
After A party hang up and redial again B party, the conversation is normal and they both can hear each other.
I am faced the same problem in our network and when I am disabled the AMR_FR the problem does not occurs…
I also looking for solution to solve this problems..
BR,