diff --git a/openbsc/src/libbsc/abis_nm.c b/openbsc/src/libbsc/abis_nm.c
index 3afc4c4..3289b3c 100644
--- a/openbsc/src/libbsc/abis_nm.c
+++ b/openbsc/src/libbsc/abis_nm.c
@@ -1494,6 +1494,7 @@
 		switch (chan_comb) {
 		case NM_CHANC_TCHHalf:
 		case NM_CHANC_TCHHalf2:
+		case NM_CHANC_OSMO_TCHFull_TCHHalf_PDCH:
 			/* not supported */
 			*reason = "TCH/H is not supported.";
 			return -EINVAL;
@@ -1590,6 +1591,7 @@
 				case NM_CHANC_TCHHalf:
 				case NM_CHANC_IPAC_TCHFull_TCHHalf:
 				case NM_CHANC_IPAC_TCHFull_PDCH:
+				case NM_CHANC_OSMO_TCHFull_TCHHalf_PDCH:
 					return 0;
 				default:
 					*reason = "TS1 must carry a CBCH, SDCCH or TCH.";
@@ -1621,6 +1623,7 @@
 				return 0;
 			case NM_CHANC_IPAC_PDCH:
 			case NM_CHANC_IPAC_TCHFull_PDCH:
+			case NM_CHANC_OSMO_TCHFull_TCHHalf_PDCH:
 				if (ts->trx->nr == 0)
 					return 0;
 				else {