diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index a9f9e5e..f40bcbd 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -426,6 +426,8 @@
 	GSM_BTS_TYPE_RBS2000,
 };
 
+struct vty;
+
 struct gsm_bts_model {
 	struct llist_head list;
 
@@ -434,6 +436,10 @@
 
 	int (*oml_rcvmsg)(struct msgb *msg);
 
+	void (*config_write_bts)(struct vty *vty, struct gsm_bts *bts);
+	void (*config_write_trx)(struct vty *vty, struct gsm_bts_trx *trx);
+	void (*config_write_ts)(struct vty *vty, struct gsm_bts_trx_ts *ts);
+
 	struct tlv_definition nm_att_tlvdef;
 
 	struct bitvec features;
diff --git a/openbsc/src/bsc_vty.c b/openbsc/src/bsc_vty.c
index 3d7d69b..55eeb14 100644
--- a/openbsc/src/bsc_vty.c
+++ b/openbsc/src/bsc_vty.c
@@ -333,6 +333,9 @@
 		}
 	}
 	config_write_e1_link(vty, &ts->e1_link, "     ");
+
+	if (ts->trx->bts->model->config_write_ts)
+		ts->trx->bts->model->config_write_ts(vty, ts);
 }
 
 static void config_write_trx_single(struct vty *vty, struct gsm_bts_trx *trx)
@@ -352,6 +355,9 @@
 	config_write_e1_link(vty, &trx->rsl_e1_link, "   rsl ");
 	vty_out(vty, "   rsl e1 tei %u%s", trx->rsl_tei, VTY_NEWLINE);
 
+	if (trx->bts->model->config_write_trx)
+		trx->bts->model->config_write_trx(vty, trx);
+
 	for (i = 0; i < TRX_NR_TS; i++)
 		config_write_ts_single(vty, &trx->ts[i]);
 }
@@ -500,6 +506,9 @@
 
 	config_write_bts_gprs(vty, bts);
 
+	if (bts->model->config_write_bts)
+		bts->model->config_write_bts(vty, bts);
+
 	llist_for_each_entry(trx, &bts->trx_list, list)
 		config_write_trx_single(vty, trx);
 }