Reported by: yraber
Patches:
      12694.2nd.diff uploaded by murf (license 17)
Tested by: murf, laurav
Thanks to file (Joshua Colp) for his IAX fix.
the change to cdr.c allows no-answer to percolate
up into CDR's, and feels like the right place to
locate this fix; if BUSY is done here, no-answer
should be, too.
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@159316 
65c4cc65-6c06-0410-ace0-
fbb531ad65f3
                                iaxs[fr->callno]->videoformat = f.subclass & ~0x1;
                        }
                }
+               if (f.frametype == AST_FRAME_CONTROL && iaxs[fr->callno]->owner) {
+                       if (f.subclass == AST_CONTROL_BUSY) {
+                               iaxs[fr->callno]->owner->hangupcause = AST_CAUSE_BUSY;
+                       } else if (f.subclass == AST_CONTROL_CONGESTION) {
+                               iaxs[fr->callno]->owner->hangupcause = AST_CAUSE_CONGESTION;
+                       }
+               }
                if (f.frametype == AST_FRAME_IAX) {
                        AST_SCHED_DEL(sched, iaxs[fr->callno]->initid);
                        /* Handle the IAX pseudo frame itself */
 
                case AST_CAUSE_BUSY:
                        ast_cdr_busy(cdr);
                        break;
+               case AST_CAUSE_NO_ANSWER:
+                       ast_cdr_noanswer(cdr);
+                       break;
                case AST_CAUSE_NORMAL:
                        break;
                default: