Merged revisions 191559 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r191559 | tilghman | 2009-05-01 15:00:23 -0500 (Fri, 01 May 2009) | 6 lines
  
  SIP Response 410 maps to cause code 22 (or 23), not 1.
  (closes issue #14993)
   Reported by: BigJimmy
   Patches: 
         causepatch uploaded by BigJimmy (license 371)
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@191560 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -5521,7 +5521,7 @@ static int hangup_sip2cause(int cause)
 		case 409:	/* Conflict */
 			return AST_CAUSE_NORMAL_TEMPORARY_FAILURE;
 		case 410:	/* Gone */
-			return AST_CAUSE_UNALLOCATED;
+			return AST_CAUSE_NUMBER_CHANGED;
 		case 411:	/* Length required */
 			return AST_CAUSE_INTERWORKING;
 		case 413:	/* Request entity too large */