void SipModuleImpl::invite(const QString &callerID, const QString &dtmf, bool autohangOff )
{
    if (m_callback)
    {
        QJsonObject o;
        o["id"] = callerID;
        if (!dtmf.isEmpty())
            o["dtmf"] = dtmf;
        o["bye"] = autohangOff ? 1 : 0;
        m_callback("executeMethod", QVariantList() << "sip:invite" << QJsonDocument(o).toJson());
    }
}