diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.100PRB.usrpx310.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.100PRB.usrpx310.conf
index 210c7ea74084fbf489956c1a166a742cf3abffdf..534ed62dfd350f8c4bccadf8fdd43c0b28d37fd6 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.100PRB.usrpx310.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.100PRB.usrpx310.conf
@@ -22,6 +22,9 @@ eNBs =
 
     component_carriers = (
       {
+        node_function                                         = "eNodeB_3GPP";
+        node_timing                                           = "synch_to_ext_device";
+        node_synch_ref                                        = 0;
         frame_type					      = "FDD";
         tdd_config 					      = 3;
         tdd_config_s            			      = 0;