CallListener::CallListener(): source_(0),
closeConnection_(false), initialized_(false), box_(0), label_(0),
CallListener::CallListener(): source_(0),
closeConnection_(false), initialized_(false), box_(0), label_(0),
-retries_(-1), timer_(0), currentCall_(0)
+retries_(-1), timer_(0), currentCall_(0), ignoreFirstZero_(false)