anchor.diff:      {Action, NewDialog} =
   	case sipdialog:update_dialog_recv_request(NewRequest, State#state.dialog) of
   	    {error, old_cseq} ->
  -		transactionlayer:send_response_handler(THandler, 500, "CSeq not higher than last requests");
  +		transactionlayer:send_response_handler(THandler, 500, "CSeq not higher than last requests"),
  +		{noreply, State#state.dialog};
   	    {ok, NewDialog1} ->
   		case NewRequest#request.method of
   		    "NOTIFY" ->
  
positive.code: 			   "@", siprequest:myhostname()
  			  ]),
      CSeq = 1,
  
      FromContact = contact:add_param(Referer, "tag", FromTag),
      Header = keylist:from_list([{"From",	[contact:print(FromContact)]},
  				{"To",		[contact:print(Referee)]},
  				{"Call-Id",	[CallId]},
  				{"CSeq",	[lists:concat([CSeq, " ", Method])]}
  			       ] ++ ExtraHeaders),
  
      RefereeURL = sipurl:parse(Referee#contact.urlstr),
  
negative.code: 
  
  %%--------------------------------------------------------------------
  %% Function: start_generate_request(Method, Referer, Referee,
  %%                                  ExtraHeaders, Body)
  %%           Method       = string(), SIP method
  %%           Referer      = contact record()
  %%           Referee      = contact record()
  