diff --git a/src/gsm/rsl.c b/src/gsm/rsl.c
index abda932..e610ebf 100644
--- a/src/gsm/rsl.c
+++ b/src/gsm/rsl.c
@@ -236,6 +236,8 @@
 		sprintf(str, "RACH on TS%d", ts);
 	else if (cbits == 0x12)
 		sprintf(str, "PCH/AGCH on TS%d", ts);
+	else if (cbits == 0x18)
+		sprintf(str, "PDCH on TS%d", ts);
 	else
 		sprintf(str, "UNKNOWN on TS%d", ts);