Schedule call with the gateway

The following code schedule the call with the gateway.

CMapStringToString nvpairs;
nvpairs["info"] = "CallNow Sample";
nvpairs["phoneno"] = m_phone;
nvpairs["firstocc"] = "0";
nvpairs["startvxml"] = VgateClient::GetRemoteDir(targetdir) +
                           "\\callnow.vxml";

CString callId;
if (! VgateClient::ScheduleCall(nvpairs, callId)) {
    AfxMessageBox(VgateClient::GetLastError());
    return;
}