ie.calledNo = calledNo;
ie.callingNo = callingNo;
ie.callingName = callingName;
ie.username = username;
AudioInterface a = _call.getAudioFace();
int format = a.supportedCodecs().intValue();
ie.format = VoiceFrame.GSM_BIT;
ie.version = Integer.valueOf(2);
ie.codec_prefs = a.codecPrefString().getBytes();
ie.capability = Integer.valueOf(format);
// ie.putIaxVar("foobar","724024");