private SI_Out_SyncClient WebserviceConnection ()
{

    BasicHttpBinding binding = new BasicHttpBinding(BasicHttpSecurityMode.TransportCredentialOnly);

    binding.MaxBufferSize = 2147483647;
    binding.MaxReceivedMessageSize = 2147483647;

    binding.CloseTimeout = new TimeSpan(1, 5, 0);
    binding.OpenTimeout = new TimeSpan(1, 5, 0);
    binding.SendTimeout = new TimeSpan(1, 5, 0);

    binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Basic;
    binding.Security.Transport.ProxyCredentialType = HttpProxyCredentialType.Basic;

    EndpointAddress address = new EndpointAddress(Library.Environment.GetGlobalString("ENDPOINT"));

    var client = new SI_Out_SyncClient(binding, address);

    client.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;
    client.ClientCredentials.UserName.UserName = Library.Environment.GetGlobalString("USER");
    client.ClientCredentials.UserName.Password = Library.Environment.GetGlobalString("PASSWORD");

    return client;
}