C# reliable TCP duplex callback

C#ReliableTCPDuplexCallback

in ou project we use the following Binding and works perfectly.
<netTcpBinding>
<binding name="netTcpBinding"
receiveTimeout="Infinite">
<reliableSession inactivityTimeout="00:00:10"
enabled="true" />
</binding>
</netTcpBinding>

This is equal to the following code

binding.ReliableSession.Enabled = true;
binding.ReliableSession.InactivityTimeout =
TimeSpan.FromSeconds(10);
binding.ReceiveTimeout = TimeSpan.MaxValue;

CReliableTCPDuplexCallback

in ou project we use the following Binding and works perfectly.
<netTcpBinding>
<binding name="netTcpBinding"
receiveTimeout="Infinite">
<reliableSession inactivityTimeout="00:00:10"
enabled="true" />
</binding>
</netTcpBinding>

This is equal to the following code
            binding.ReceiveTimeout = TimeSpan.MaxValue; 
            binding.Security.Mode = SecurityMode.None;
            binding.ReliableSession.Enabled = true;
       //     binding.ReliableSession.InactivityTimeout = TimeSpan.FromSeconds(10);
            binding.ReliableSession.InactivityTimeout = TimeSpan.MaxValue;