void
TpCalloutInitiator::initiateCall (const QString &strDestination)
{
    QVariantMap request;
    request.insert(TELEPATHY_INTERFACE_CHANNEL ".ChannelType",
                   TELEPATHY_INTERFACE_CHANNEL_TYPE_STREAMED_MEDIA);
    request.insert(TELEPATHY_INTERFACE_CHANNEL ".TargetHandleType",
                   (uint) Tp::HandleTypeContact);
    request.insert(TELEPATHY_INTERFACE_CHANNEL ".TargetID",
                   strDestination);
    Tp::PendingChannelRequest *pReq = account->ensureChannel(request);

    QObject::connect (
        pReq, SIGNAL (finished (Tp::PendingOperation*)),
        this, SLOT   (onChannelReady (Tp::PendingOperation*)));
}//TpCalloutInitiator::initiateCall

Tp::PendingChannelRequest* TelepathyAccount::call(QString account) {
    QVariantMap request;
    // audio works
    request.insert(QLatin1String(TELEPATHY_INTERFACE_CHANNEL ".ChannelType"), TELEPATHY_INTERFACE_CHANNEL_TYPE_STREAMED_MEDIA);
    request.insert(QLatin1String(TELEPATHY_INTERFACE_CHANNEL ".TargetHandleType"), (uint) Tp::HandleTypeContact);
    request.insert(QLatin1String(TELEPATHY_INTERFACE_CHANNEL ".TargetID"), account);
    request.insert(QLatin1String(TELEPATHY_INTERFACE_CHANNEL ".Type.StreamedMedia.InitialAudio"), true);

    return m_account.data()->ensureChannel(request);
}