diff --git a/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.24PRB.usrpx300.conf b/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.24PRB.usrpx300.conf
index 8273a3a82a..0ad01d6e93 100644
--- a/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.24PRB.usrpx300.conf
+++ b/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.24PRB.usrpx300.conf
@@ -161,10 +161,23 @@ gNBs =
       nrofUplinkSymbols                                             = 4;
 
       ssPBCH_BlockPower                                             = -25;
+
+  #ext2
+    #ntn_Config_r17
+#      cellSpecificKoffset_r17                                       = 478;
   }
 
   );
 
+    TIMERS :
+    {
+      sr_ProhibitTimer       = 0;
+      sr_TransMax            = 64;
+#      sr_ProhibitTimer_v1700 = 512;
+#      t300                   = 2000;
+#      t301                   = 2000;
+#      t319                   = 2000;
+    };
 
     # ------- SCTP definitions
     SCTP :
diff --git a/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.25PRB.usrpx300.conf b/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.25PRB.usrpx300.conf
index 4e27d924de..f29bbf9cf6 100644
--- a/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.25PRB.usrpx300.conf
+++ b/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.25PRB.usrpx300.conf
@@ -161,10 +161,23 @@ gNBs =
       nrofUplinkSymbols                                             = 4;
 
       ssPBCH_BlockPower                                             = -25;
+
+  #ext2
+    #ntn_Config_r17
+#      cellSpecificKoffset_r17                                       = 478;
   }
 
   );
 
+    TIMERS :
+    {
+      sr_ProhibitTimer       = 0;
+      sr_TransMax            = 64;
+#      sr_ProhibitTimer_v1700 = 512;
+#      t300                   = 2000;
+#      t301                   = 2000;
+#      t319                   = 2000;
+    };
 
     # ------- SCTP definitions
     SCTP :