diff --git a/src/isdn/dss1.c b/src/isdn/dss1.c
index 6e0df2b..474febe 100644
--- a/src/isdn/dss1.c
+++ b/src/isdn/dss1.c
@@ -1516,14 +1516,15 @@ void setup_req(call_t *call, osmo_cc_msg_t *msg)
 	PDEBUG(DDSS1, DEBUG_INFO, "Codec %s selected for transmission.\n", call->codec->payload_name);
 
 	/* get channel */
-	rc = hunt_bchannel_out(call->isdn_ep, &call->b_channel, &call->b_exclusive);
+	rc = hunt_bchannel_out(call->isdn_ep, &channel, &exclusive);
 	if (rc < 0) {
 		PDEBUG(DDSS1, DEBUG_NOTICE, "There is no channel available on the interface.\n");
 		release_and_destroy(call, -rc, 0, 0);
 		return;
 	}
-	channel = call->b_channel;
-	exclusive = call->b_exclusive;
+	/* must seize it, if we gave a channel, so that requested channel is stored in call instance */
+	if (channel)
+		seize_bchannel(call, channel, exclusive);
 
 	/* creating pid */
 	call->l3_pid = request_new_pid(call->isdn_ep->ml3);
diff --git a/src/isdn/isdn.c b/src/isdn/isdn.c
index e52f31c..04d2d13 100644
--- a/src/isdn/isdn.c
+++ b/src/isdn/isdn.c
@@ -511,8 +511,8 @@ int open_bchannel_out(call_t *call, unsigned int cmd, int channel, int exclusive
 		if (channel==-1 || call->b_channel==channel) {
 			call->b_exclusive = 1; // we are done
 
-			/* if channel was accepted, try to get it */
-			rc = seize_bchannel(call, channel, 1); // exclusively
+			/* if channel was accepted, seize_bchannel shall simply return, because given channel is already set */
+			rc = seize_bchannel(call, call->b_channel, 1); // exclusively
 			if (rc < 0) {
 				PDEBUG(DISDN, DEBUG_DEBUG, " -> result = replied channel not available\n");
 				return -47;
@@ -531,7 +531,7 @@ int open_bchannel_out(call_t *call, unsigned int cmd, int channel, int exclusive
 			return -111; // protocol error
 		}
 
-		/* if channel was not accepted, try to get it */
+		/* if channel was not accepted, try to get a different one */
 		rc = seize_bchannel(call, channel, 1); // exclusively
 		if (rc < 0) {
 			PDEBUG(DISDN, DEBUG_DEBUG, " -> result = replied channel not available\n");