--- asterisk-1.0.3-dist/rtp.c   2004-11-25 19:16:16.000000000 +0100
+++ asterisk-1.0.3/rtp.c        2005-01-06 00:18:43.000000000 +0100
@@ -408,7 +408,13 @@
        struct rtpPayloadType rtpPT;

        len = sizeof(sin);
-
+
+       if(!rtp) {
+               /* We're fscked!! FIXME - this can occur from chan_mgcp! */
+               ast_log(LOG_WARNING, "RTP nullpointer fubar - returning null frame, hope thats OK...\n");
+               return &null_frame;
+       }
+
        /* Cache where the header will go */
        res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
                                        0, (struct sockaddr *)&sin, &len);
~