anchor.diff:      UI = <<109,64,1,57>>,
       {ok, _V} = 'MULTIMEDIA-SYSTEM-CONTROL':decode(Type, UI).
   
  +roundtrip(T, V) ->
  +    asn1_test_lib:roundtrip('H323-MESSAGES', T, V).
  +
   roundtrip(T, V, HexString) ->
       Enc = asn1_test_lib:hex_to_bin(HexString),
       Enc = asn1_test_lib:roundtrip_enc('H323-MESSAGES', T, V),
  
positive.code:     {'H323-UserInformation',
       {'H323-UU-PDU',
        {alerting,
         {'Alerting-UUIE',
  	{0,0,8,2250,0,2},
  	{'EndpointType',asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE,
  	 asn1_NOVALUE,asn1_NOVALUE,
  	 {'TerminalInfo',asn1_NOVALUE},
  	 false,false},
  	asn1_NOVALUE,
  	{'CallIdentifier',<<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>>},
  	asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE}},
        asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE,asn1_NOVALUE},
       asn1_NOVALUE}.
  
  alerting_enc() ->
      "0380060008914a0002020120110000000000000000000000000000000000".
  
negative.code: run(_Rules)  -> ok.
  
  run() ->
      roundtrip('EndpointType', endpoint()),
      roundtrip('Alerting-UUIE', alerting_uuie()),
      roundtrip('H323-UserInformation', alerting_val(), alerting_enc()),
      roundtrip('H323-UserInformation', connect_val(), connect_enc()),
      general_string(),
  