diff --git a/examples/tcp/tcp-nsc-comparison.cc b/examples/tcp/tcp-nsc-comparison.cc
index 7752e12a5..ee32b5eb2 100644
--- a/examples/tcp/tcp-nsc-comparison.cc
+++ b/examples/tcp/tcp-nsc-comparison.cc
@@ -21,6 +21,10 @@
  * "DCE Cradle: Simulate Network Protocols with Real Stacks for Better Realism"
  * by Hajime Tazaki, Frederic Urbani and Thierry Turlett presented at WNS3 2013
  *
+ * By default, TCP timestamps, window scale, and SACK are disabled because
+ * they were not supported in ns-3 at the time of this paper.  TCP timestamp
+ * and window scale can be enabled by command line arguments.  
+ *
  */
 
 #include "ns3/log.h"
@@ -42,6 +46,8 @@ double startTime = 4.0;
 double stopTime = 20.0;
 uint32_t m_nNodes = 2;
 bool enablePcap = false;
+bool enableTimestamps = false;
+bool enableWindowScale = false;
 
 int
 main (int argc, char *argv[])
@@ -54,9 +60,11 @@ main (int argc, char *argv[])
   CommandLine cmd;
   cmd.AddValue ("stack", "choose network stack", m_stack);
   cmd.AddValue ("seed", "randomize seed", m_seed);
-  cmd.AddValue ("nNodes", "the number of nodes in left side", m_nNodes);
+  cmd.AddValue ("nNodes", "the number of source and sink nodes", m_nNodes);
   cmd.AddValue ("stopTime", "duration", stopTime);
   cmd.AddValue ("enablePcap", "pcap", enablePcap);
+  cmd.AddValue ("enableTimestamps", "use TCP Timestamps option", enableTimestamps);
+  cmd.AddValue ("enableWindowScale", "use TCP Window Scale option", enableWindowScale);
   cmd.Parse (argc, argv);
 
   SeedManager::SetSeed (m_seed);
@@ -78,6 +86,14 @@ main (int argc, char *argv[])
   if (m_stack == "ns3")
     {
       sock_factory = "ns3::TcpSocketFactory";
+      if (enableTimestamps == false)
+        {
+          Config::SetDefault ("ns3::TcpSocketBase::WindowScaling", BooleanValue (false));
+        }
+      if (enableWindowScale == false)
+        {
+          Config::SetDefault ("ns3::TcpSocketBase::Timestamp", BooleanValue (false));
+        }
       internetStack.Install (nodes);
     }
   else if (m_stack == "nsc-linux")
@@ -89,10 +105,17 @@ main (int argc, char *argv[])
       internetStack.Install (lefts);
       internetStack.Install (rights);
 
-      //these are not implemented in ns3 tcp so disable for comparison
+      // at the time this program was written, these were not implemented 
+      // in ns3 tcp, so disable for comparison
       Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_sack", StringValue ("0"));
-      Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_timestamps", StringValue ("0"));
-      Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_window_scaling", StringValue ("0"));
+      if (enableTimestamps == false)
+        {
+          Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_timestamps", StringValue ("0"));
+        }
+      if (enableWindowScale == false)
+        {
+          Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_window_scaling", StringValue ("0"));
+        }
     }
 
   PointToPointHelper pointToPoint;