diff -r 3be96a4c8c18 -r f29abea29121 asterisk/asterisk.patch.xfersips
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/asterisk/asterisk.patch.xfersips	Mon Apr 27 12:19:05 2009 +0200
@@ -0,0 +1,36 @@
+Index: channels/chan_sip.c
+diff -Nau channels/chan_sip.c.orig channels/chan_sip.c
+--- channels/chan_sip.c.orig	2009-04-24 00:48:57.000000000 +0200
++++ channels/chan_sip.c	2009-04-24 00:49:21.000000000 +0200
+@@ -18771,6 +18771,7 @@
+ \todo	Fix this function so that we wait for reply to the REFER and
+ 	react to errors, denials or other issues the other end might have.
+  */
++/* MSvB: Paramater dest may be SIPS encoded, having '@@' before host */
+ static int sip_sipredirect(struct sip_pvt *p, const char *dest)
+ {
+ 	char *cdest;
+@@ -18780,7 +18781,7 @@
+ 	cdest = ast_strdupa(dest);
+ 	
+ 	extension = strsep(&cdest, "@");
+-	host = strsep(&cdest, ":");
++	host = strsep(&cdest, ":");		/* MSvB: Could begin with '@' if SIPS */
+ 	port = strsep(&cdest, ":");
+ 	if (ast_strlen_zero(extension)) {
+ 		ast_log(LOG_ERROR, "Missing mandatory argument: extension\n");
+@@ -18813,7 +18814,13 @@
+ 		}
+ 	}
+ 
+-	ast_string_field_build(p, our_contact, "Transfer <sip:%s@%s%s%s>", extension, host, port ? ":" : "", port ? port : "");
++	if (host && *host == '@') {
++		ast_log(LOG_DEBUG, "Decoding TLS incapable Asterisk SIP URI to a standard SIPS URI before redirecting via 302 Moved Temporarily\n");
++		ast_string_field_build(p, our_contact, "Transfer <sips:%s@%s%s%s>", extension, host + 1, port ? ":" : "", port ? port : "");
++    }
++	else
++		ast_string_field_build(p, our_contact, "Transfer <sip:%s@%s%s%s>", extension, host, port ? ":" : "", port ? port : "");
++
+ 	transmit_response_reliable(p, "302 Moved Temporarily", &p->initreq);
+ 
+ 	sip_scheddestroy(p, SIP_TRANS_TIMEOUT);	/* Make sure we stop send this reply. */