Merged revisions 203258 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r203258 | qwell | 2009-06-25 14:22:46 -0500 (Thu, 25 Jun 2009) | 10 lines
  
  Unmute when we get a dtmfup (we muted on dtmfdown) event.
  
  This would occasionally cause one-way audio when using hardware DTMF detection.
  
  (closes issue #14761)
  Reported by: tzafrir
  Patches:
        v1-14761.patch uploaded by dimas (license 88)
  Tested by: tzafrir, dimas
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@203274 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -4710,6 +4710,7 @@ static struct ast_frame *dahdi_handle_event(struct ast_channel *ast)
 			/* absorb event */
 		} else {
 #endif
+			dahdi_confmute(p, 0);
 			p->subs[idx].f.frametype = AST_FRAME_DTMF_END;
 			p->subs[idx].f.subclass = res & 0xff;
 #ifdef HAVE_PRI