am a0f9a4f7: Merge change I2083b297 into eclair

Merge commit 'a0f9a4f73579c2afa4dd82499a69abce94a3f23f' into eclair-mr2

* commit 'a0f9a4f73579c2afa4dd82499a69abce94a3f23f':
  Fix issue 2265111: Loss of downlink audio while listening, and get a MT call.