Issue 7686, fix by phsultan, NAT issues when calling from gtalk to SIP over nat.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@65857 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_gtalk.c

@@ -527,7 +527,7 @@ static enum ast_rtp_get_result gtalk_get_rtp_peer(struct ast_channel *chan, stru
 	ast_mutex_lock(&p->lock);
 	if (p->rtp){
 		*rtp = p->rtp;
-		res = AST_RTP_TRY_NATIVE;
+		res = AST_RTP_TRY_PARTIAL;
 	}
 	ast_mutex_unlock(&p->lock);