Index: main/rtp.c
===================================================================
--- main/rtp.c	(revision 230727)
+++ main/rtp.c	(working copy)
@@ -1153,7 +1153,6 @@
 	}
 	rtp->f.frametype = AST_FRAME_CNG;
 	rtp->f.subclass = data[0] & 0x7f;
-	rtp->f.datalen = len - 1;
 	rtp->f.samples = 0;
 	rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
 	f = &rtp->f;