diff --git a/src/common/oml.c b/src/common/oml.c
index 0a502c10d..7bf89c547 100644
--- a/src/common/oml.c
+++ b/src/common/oml.c
@@ -962,6 +962,13 @@ static int oml_rx_set_chan_attr(struct gsm_bts_trx_ts *ts, struct msgb *msg)
 	/* 9.4.60 TSC */
 	if (TLVP_PRES_LEN(&tp, NM_ATT_TSC, 1)) {
 		ts->tsc_oml = ts->tsc = *TLVP_VAL(&tp, NM_ATT_TSC);
+		if (ts->tsc != BTS_TSC(bts) &&
+		    !osmo_bts_has_feature(bts->features, BTS_FEAT_MULTI_TSC)) {
+			LOGPFOH(DOML, LOGL_ERROR, foh, "SET CHAN ATTR: this BTS model does not "
+				"support TSC %u != BSIC-BCC %u\n", ts->tsc, BTS_TSC(bts));
+			talloc_free(tp_merged);
+			return oml_fom_ack_nack(msg, NM_NACK_PARAM_RANGE);
+		}
 	} else {
 		/* If there is no TSC specified, use the BCC */
 		ts->tsc_oml = ts->tsc = BTS_TSC(bts);
diff --git a/src/osmo-bts-lc15/oml.c b/src/osmo-bts-lc15/oml.c
index 3010fe752..acce1d425 100644
--- a/src/osmo-bts-lc15/oml.c
+++ b/src/osmo-bts-lc15/oml.c
@@ -1827,21 +1827,6 @@ int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type,
 			void *obj)
 {
 	/* FIXME: more checks if the attributes are valid */
-
-	switch (msg_type) {
-	case NM_MT_SET_CHAN_ATTR:
-		/* our L1 only supports one global TSC for all channels
-		 * one one TRX, so we need to make sure not to activate
-		 * channels with a different TSC!! */
-		if (TLVP_PRESENT(new_attr, NM_ATT_TSC) &&
-		    TLVP_LEN(new_attr, NM_ATT_TSC) >= 1 &&
-		    *TLVP_VAL(new_attr, NM_ATT_TSC) != BTS_TSC(bts)) {
-			LOGP(DOML, LOGL_ERROR, "Channel TSC %u != BSIC-TSC %u\n",
-				*TLVP_VAL(new_attr, NM_ATT_TSC), BTS_TSC(bts));
-			return -NM_NACK_PARAM_RANGE;
-		}
-		break;
-	}
 	return 0;
 }
 
diff --git a/src/osmo-bts-oc2g/oml.c b/src/osmo-bts-oc2g/oml.c
index 151b92e14..5646cfbae 100644
--- a/src/osmo-bts-oc2g/oml.c
+++ b/src/osmo-bts-oc2g/oml.c
@@ -1836,21 +1836,6 @@ int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type,
 			void *obj)
 {
 	/* FIXME: more checks if the attributes are valid */
-
-	switch (msg_type) {
-	case NM_MT_SET_CHAN_ATTR:
-		/* our L1 only supports one global TSC for all channels
-		 * one one TRX, so we need to make sure not to activate
-		 * channels with a different TSC!! */
-		if (TLVP_PRESENT(new_attr, NM_ATT_TSC) &&
-		    TLVP_LEN(new_attr, NM_ATT_TSC) >= 1 &&
-		    *TLVP_VAL(new_attr, NM_ATT_TSC) != BTS_TSC(bts)) {
-			LOGP(DOML, LOGL_ERROR, "Channel TSC %u != BSIC-TSC %u\n",
-				*TLVP_VAL(new_attr, NM_ATT_TSC), BTS_TSC(bts));
-			return -NM_NACK_PARAM_RANGE;
-		}
-		break;
-	}
 	return 0;
 }
 
diff --git a/src/osmo-bts-sysmo/oml.c b/src/osmo-bts-sysmo/oml.c
index 25c56519f..818d82bcb 100644
--- a/src/osmo-bts-sysmo/oml.c
+++ b/src/osmo-bts-sysmo/oml.c
@@ -1741,20 +1741,6 @@ int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type,
 			void *obj)
 {
 	/* FIXME: more checks if the attributes are valid */
-
-	switch (msg_type) {
-	case NM_MT_SET_CHAN_ATTR:
-		/* our L1 only supports one global TSC for all channels
-		 * one one TRX, so we need to make sure not to activate
-		 * channels with a different TSC!! */
-		if (TLVP_PRES_LEN(new_attr, NM_ATT_TSC, 1) &&
-		    *TLVP_VAL(new_attr, NM_ATT_TSC) != BTS_TSC(bts)) {
-			LOGP(DOML, LOGL_ERROR, "Channel TSC %u != BSIC-TSC %u\n",
-				*TLVP_VAL(new_attr, NM_ATT_TSC), BTS_TSC(bts));
-			return -NM_NACK_PARAM_RANGE;
-		}
-		break;
-	}
 	return 0;
 }