* #29024: dtmf over rtp: only increment timestep for new events

daemon/src/audio/audiortp/audio_rtp_session.cpp

@@ -117,6 +117,7 @@ void AudioRtpSession::sendDtmfEvent()
     DEBUG("Send RTP Dtmf (%d)", dtmf.payload.event);
 
     const int increment = getIncrementForDTMF();
+    if (dtmf.newevent)
         timestamp_ += increment;
 
     // discard equivalent size of audio