--- zzzz-none-000/linux-2.6.28.10/net/netfilter/nf_conntrack_sip.c	2009-05-02 18:54:43.000000000 +0000
+++ fusiv-7390-686/linux-2.6.28.10/net/netfilter/nf_conntrack_sip.c	2012-02-14 14:37:49.000000000 +0000
@@ -815,6 +815,12 @@
 	rtp_exp = nf_ct_expect_alloc(ct);
 	if (rtp_exp == NULL)
 		goto err1;
+
+	/* When there is SIP Proxy server, the expected RTP connection should be from 
+	 * the WAN user & not from Proxy server.Hence, changing the expectation to 
+	   be on 'any source IP'*/
+	saddr = NULL; 
+
 	nf_ct_expect_init(rtp_exp, class, nf_ct_l3num(ct), saddr, daddr,
 			  IPPROTO_UDP, NULL, &rtp_port);