diff --git a/openair1/SIMULATION/NR_PHY/nr_dummy_functions.c b/openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
index ba5c2bf025..d55322156b 100644
--- a/openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
+++ b/openair1/SIMULATION/NR_PHY/nr_dummy_functions.c
@@ -15,6 +15,8 @@ int oai_nfapi_nr_uci_indication(nfapi_nr_uci_indication_t *ind) { return (0); }
 int oai_nfapi_nr_rach_indication(nfapi_nr_rach_indication_t *ind) { return (0); }
 int oai_nfapi_nr_rx_data_indication(nfapi_nr_rx_data_indication_t *ind) { return 0; }
 
+void handle_nr_slot_ind(uint16_t sfn, uint16_t slot) { }
+
 int pack_nr_srs_beamforming_report(void *pMessageBuf, void *pPackedBuf, uint32_t packedBufLen) { return 0; }
 int unpack_nr_srs_beamforming_report(void *pMessageBuf, uint32_t messageBufLen, void *pUnpackedBuf, uint32_t unpackedBufLen) { return 0; }
 int pack_nr_srs_normalized_channel_iq_matrix(void *pMessageBuf, void *pPackedBuf, uint32_t packedBufLen) { return 0; }
diff --git a/openair2/NR_PHY_INTERFACE/NR_IF_Module.c b/openair2/NR_PHY_INTERFACE/NR_IF_Module.c
index 1ef2365573..9a2c9ed94b 100644
--- a/openair2/NR_PHY_INTERFACE/NR_IF_Module.c
+++ b/openair2/NR_PHY_INTERFACE/NR_IF_Module.c
@@ -396,7 +396,15 @@ static void match_crc_rx_pdu(nfapi_nr_rx_data_indication_t *rx_ind, nfapi_nr_crc
   }
 }
 
-static void run_scheduler(module_id_t module_id, int CC_id, int frame, int slot)
+extern void handle_nr_slot_ind(uint16_t sfn, uint16_t slot);
+static void pnf_send_slot_ind(module_id_t module_id, int CC_id, int frame, int slot)
+{
+  (void)module_id;
+  (void)CC_id;
+  handle_nr_slot_ind(frame, slot);
+}
+
+static void run_scheduler_monolithic(module_id_t module_id, int CC_id, int frame, int slot)
 {
   NR_IF_Module_t *ifi = nr_if_inst[module_id];
 
@@ -509,7 +517,12 @@ NR_IF_Module_t *NR_IF_Module_init(int Mod_id) {
 
     nr_if_inst[Mod_id]->CC_mask=0;
     nr_if_inst[Mod_id]->NR_UL_indication = NR_UL_indication;
-    nr_if_inst[Mod_id]->NR_slot_indication = run_scheduler;
+    if (NFAPI_MODE == NFAPI_MONOLITHIC)
+      nr_if_inst[Mod_id]->NR_slot_indication = run_scheduler_monolithic;
+    else if (NFAPI_MODE == NFAPI_MODE_PNF)
+      nr_if_inst[Mod_id]->NR_slot_indication = pnf_send_slot_ind;
+    else // NFAPI_MODE_VNF
+      NULL;
     AssertFatal(pthread_mutex_init(&nr_if_inst[Mod_id]->if_mutex,NULL)==0,
                 "allocation of nr_if_inst[%d]->if_mutex fails\n",Mod_id);
   }