public new string ToString()
{
string routeStr = null;
if (m_sipRoutes != null && m_sipRoutes.Count > 0)
{
for (int routeIndex = 0; routeIndex < m_sipRoutes.Count; routeIndex++)
{
routeStr += (routeStr != null) ? "," + m_sipRoutes[routeIndex].ToString() : m_sipRoutes[routeIndex].ToString();
}
}
return routeStr;
}