Index: channels/sip/sdp_crypto.c
===================================================================
--- channels/sip/sdp_crypto.c	(revision 433002)
+++ channels/sip/sdp_crypto.c	(working copy)
@@ -220,7 +220,7 @@
 		return -1;
 	}
 
-	if (sscanf(tag, "%30d", &p->tag) != 1 || p->tag <= 0 || p->tag > 9) {
+	if (sscanf(tag, "%30d", &p->tag) != 1 || p->tag < 0 || p->tag > 999999999) {
 		ast_log(LOG_WARNING, "Unacceptable a=crypto tag: %s\n", tag);
 		return -1;
 	}