anchor.diff:  
       %% Timestamp NOT present in 486 Busy Here
       autotest:mark(?LINE, "make_response/7 - 2.3"),
  -    [] = keylist:fetch("Timestamp", Response2#response.header),
  +    [] = keylist:fetch(timestamp, Response2#response.header),
   
       %% Content-Type NOT present in 486 Busy Here with empty body
       autotest:mark(?LINE, "make_response/7 - 2.4"),
  
positive.code:     %% The preservation of Timestamp headers into 100 Trying response is mandated by RFC 3261 8.2.6.1
      AnswerHeader5 = case Status of
  			100 -> AnswerHeader4;
  			_ -> keylist:delete("Timestamp", AnswerHeader4)
  		    end,
      set_response_body(#response{status=Status, reason=Reason, header=AnswerHeader5}, Body).
  
  
negative.code: 
      %% Timestamp still present in 100 Trying check
      autotest:mark(?LINE, "make_response/7 - 1.3"),
      ["1234"] = keylist:fetch(timestamp, Response1#response.header),
  
      %% correct Content-Length added
      autotest:mark(?LINE, "make_response/7 - 1.4"),
  