Index: channels/chan_sip.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_sip.c,v
retrieving revision 1.899
diff -u -r1.899 chan_sip.c
--- channels/chan_sip.c 28 Oct 2005 13:37:31 -0000      1.899
+++ channels/chan_sip.c 30 Oct 2005 01:21:26 -0000
@@ -6570,7 +6570,12 @@
            !strncmp(uri, ast_pickup_ext(),strlen(uri))) {
                return 1;
        }
-
+
+       /* Return 0 for "OPTIONS" requests with no user@ part (application level ping) */
+       if ((req->method == SIP_OPTIONS) && (strcmp(uri, "@"))) {
+               return 0;
+       }
+
        return -1;
 }