anchor.diff:  				Request#request.method, Request#request.uri,
   				Request#request.header, User, Password),
       Request#request{header = NewHeader}.
  +
  +assert_on_message() ->
  +    receive
  +	M ->
  +	    Msg = io_lib:format("Test: Unknown signal found in process mailbox :~n~p~n~n", [M]),
  +	    {error, lists:flatten(Msg)}
  +    after 0 ->
  +	    ok
  +    end.
  
positive.code: get_sippipe_result() ->
      receive
  	{start_sippipe, Res} ->
  	    Res;
  	M ->
  	    Msg = io_lib:format("Test: Unknown signal found in process mailbox :~n~p~n~n", [M]),
  
negative.code: 
      {407, "Proxy Authentication Required", [{"Proxy-Authenticate", [_]}], <<>>} = get_created_response(),
  
      autotest:mark(?LINE, "request/2 - INVITE to pstn 2.0"),
      %% test INVITE to free PSTN destination
      Message2 =
  