diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c
index b5e7e029d..8d99ea42d 100644
--- a/openbsc/src/libcommon/gsm_data_shared.c
+++ b/openbsc/src/libcommon/gsm_data_shared.c
@@ -658,11 +658,17 @@ struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr,
 		lch_idx = 0;	/* TCH/F */	
 		if (ts->pchan != GSM_PCHAN_TCH_F &&
 		    ts->pchan != GSM_PCHAN_PDCH &&
-		    ts->pchan != GSM_PCHAN_TCH_F_PDCH)
+		    ts->pchan != GSM_PCHAN_TCH_F_PDCH
+		    && !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH
+			 && (ts->dyn.pchan_is == GSM_PCHAN_TCH_F
+			     || ts->dyn.pchan_want == GSM_PCHAN_TCH_F)))
 			ok = false;
 	} else if ((cbits & 0x1e) == 0x02) {
 		lch_idx = cbits & 0x1;	/* TCH/H */
-		if (ts->pchan != GSM_PCHAN_TCH_H)
+		if (ts->pchan != GSM_PCHAN_TCH_H
+		    && !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH
+			 && (ts->dyn.pchan_is == GSM_PCHAN_TCH_H
+			     || ts->dyn.pchan_want == GSM_PCHAN_TCH_H)))
 			ok = false;
 	} else if ((cbits & 0x1c) == 0x04) {
 		lch_idx = cbits & 0x3;	/* SDCCH/4 */
@@ -681,6 +687,10 @@ struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr,
 		    ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH)
 			ok = false;
 		/* FIXME: we should not return first sdcch4 !!! */
+	} else if ((chan_nr & RSL_CHAN_NR_MASK) == RSL_CHAN_OSMO_PDCH) {
+		lch_idx = 0;
+		if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH)
+			ok = false;
 	} else
 		return NULL;